Yamaha IT - Forum

General Category => Members Rides => Topic started by: map351 on April 29, 2015, 12:22:17 PM



Title: The 94 YZ/WR/iT project
Post by: map351 on April 29, 2015, 12:22:17 PM
At the end of last summer we found a 1994 YZ 250 on Craigslist for 150.00 Bux dead engine with a spare bottom end & FMF fatty answer pro bars. we sold both engines & rear 19" wheel $475.00 a friend gave us the remains of a 92 WR 200 everything except the engine & frame we used the 18" rear wheel & complete front end seat & tank front & rear fender & number plate w/ light, I found a 81 iT 250 bottom end ( like new well taken care of or very low time) CDI, pipe regulator for 72.00 Bux for everything on eBay, Next I found a iT250 cylinder with a fresh bore .60 w/ a wiseco piston kit in the box & a 82 YZ bottom end w/ another iT250 cylinder with a new LA sleeve in the deal for 80.00 Bux.

I did the chassis mod to move the RS down tube to clear the pipe & mod the fatty, I blasted the chassis painted, all new swingarm & link bearings shock is done engine in & its rolling were doing a little plastic paint work should start er up next week.

Mike

Album>> http://picasaweb.google.com/73turbopinto/1993YamahaYZWRITProject (http://picasaweb.google.com/73turbopinto/1993YamahaYZWRITProject)

(http://lh3.googleusercontent.com/-H8pvbecRpNU/U9z7c8t1ZRI/AAAAAAAAONc/CMZz2regFTc/s640/SAM_6437.JPG)

(http://lh3.googleusercontent.com/-L5KPdE8Fu5w/U9z9M8YtvJI/AAAAAAAAOPM/27zA_4HDJpM/s640/SAM_6457.JPG)

(http://lh3.googleusercontent.com/-57Zfwp5ISdk/U9z7bgaAa6I/AAAAAAAAONU/U1RZsEjooiE/s640/SAM_6436.JPG)

(http://lh3.googleusercontent.com/-AMI2Ob6VfSo/VAYsHS3A-TI/AAAAAAAAOZw/Ham99fon5SY/s640/SAM_6579.JPG)

(http://lh3.googleusercontent.com/-4QpwbQKySEA/VAowWSnpIZI/AAAAAAAAOdU/kPhOO0lbJgk/s640/SAM_6606.JPG)

(http://lh3.googleusercontent.com/-nfV1l7eUC2U/VHEvUT1mx_I/AAAAAAAAPUc/f4j3sRFpTlw/s640/SAM_7212.JPG)

(http://lh3.googleusercontent.com/-97ch-cxXVa4/VRCAz78bFpI/AAAAAAAAPsw/MWV23FQCI7k/s640/SAM_7544.JPG)

(http://lh3.googleusercontent.com/-CyF6r00W2Yo/VRfzwntuKGI/AAAAAAAAP1Y/Dfi8n32Qz_Y/s640/SAM_7589.JPG)

(http://lh3.googleusercontent.com/-eHGXgl5duaI/VTrpPGVInaI/AAAAAAAAP6g/yhN_O6ncBMU/s640/SAM_7705.JPG)

(http://lh3.googleusercontent.com/-3aJs-WnTSEs/VTrpQpUrelI/AAAAAAAAP6o/5eWQoMSc61Y/s640/SAM_7706.JPG)
Title: Re: The 94 YZ/WR/iT project
Post by: sweede490 on April 29, 2015, 01:50:23 PM
What a cool looking bike , and you sure got some sweet deals on the parts  :o

    Nice job awsum to see what would of been scrap turned into another bike , not to mention the garage time
   With family

    Look forward to seeing the finished product  :)


     Muzz
Title: Re: The 94 YZ/WR/iT project
Post by: ty4 on April 29, 2015, 02:16:49 PM
great project ...have you got a pic of the frame mod?....will look the goods when finished  8)

cheers

tony
Title: Re: The 94 YZ/WR/iT project
Post by: Mikedi on April 29, 2015, 08:40:58 PM
I love these projects, don't leave us hanging. post some photos of the frame modification.

Title: Re: The 94 YZ/WR/iT project
Post by: Zrt1200 on April 29, 2015, 09:13:09 PM
Its looking good Mike, Great Job. ;) I will  be curious on how it preforms with the added head pipe lenght. That should pull the peak RPM down. I will be also curious on the jetting with the added head pipe lenght.

Al
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on April 29, 2015, 09:55:27 PM
Thanks Guys! Al we should fire it next week i have to wire the CDI & dedent :D the pipe.

Also I put a link in the first post ( Album ) that's the photo album for the project.

Album >> http://picasaweb.google.com/73turbopinto/1993YamahaYZWRITProject (http://picasaweb.google.com/73turbopinto/1993YamahaYZWRITProject)
Mike
Title: Re: The 94 YZ/WR/iT project
Post by: glen4 on April 30, 2015, 03:20:45 AM
Looking good, interesting project for sure
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on April 30, 2015, 05:57:58 AM
A little more done today in between, using Krylon Fusion plastic paint works well..

(http://lh3.googleusercontent.com/-MDnQfpOBPLU/VUE2lKRXVbI/AAAAAAAAP78/9uaI_Zouc5w/s640/SAM_7709.JPG)

(http://lh3.googleusercontent.com/-9xE3p5_DHLo/VUE2mYpPQ6I/AAAAAAAAP8E/9oDo7lOFx2c/s640/SAM_7712.JPG)

(http://lh3.googleusercontent.com/-vhbcBhBm01U/VUE2o54UUoI/AAAAAAAAP8U/TY5tfaSxQQQ/s640/SAM_7714.JPG)
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on May 07, 2015, 03:17:31 AM
We tried to start the project on Saturday no good I thing the CDI has a problem fires 3/4 times then nothing kick a few times firing again only 3/4 sparks. I checked the stator/charging coils & pulse coil & Ign coil all are in range. I'm thinking that's why the engine is so clean had a CDI problem & some one parked it.
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on May 13, 2015, 01:39:22 AM
Still having the CDI problem always firing 30+ deg ATDC removed all the potting from the CDI found a few problems.

(http://lh3.googleusercontent.com/-9sE0BkNRQIc/VVIeAPmgNaI/AAAAAAAAP9M/X8GC7l61qxM/s640/SAM_7789.JPG)

(http://lh3.googleusercontent.com/-hsXJovmNdUc/VVIeGL0C1rI/AAAAAAAAP9s/un1QsFS50WQ/s640/SAM_7793.JPG)

(http://lh3.googleusercontent.com/-pIgVaxG_IFo/VVIeLQsTg3I/AAAAAAAAP-M/EFUfs_kLMi8/s640/SAM_7797.JPG)
Title: Re: The 94 YZ/WR/iT project
Post by: Tucson Rider on May 13, 2015, 01:46:24 AM
What the heck is that !?!  Looks like and elephant sneezed on it!

-Adam
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on May 13, 2015, 03:46:03 AM
What the heck is that !?!  Looks like and elephant sneezed on it!

-Adam
That's the black potting compound they use to keep the CDI dry & vibration proof it's dissolve in acetone.

Mike
Title: Re: The 94 YZ/WR/iT project
Post by: gearhead86 on May 13, 2015, 05:40:02 AM
Does the acetone peal the coverings off of capacitors or are they all failed?
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on May 13, 2015, 06:15:50 AM
Does the acetone peal the coverings off of capacitors or are they all failed?

Acetone swells the plastic..
Title: Re: The 94 YZ/WR/iT project
Post by: katana on May 13, 2015, 01:47:38 PM
Cool tip.  Does the acetone dissolve it completely, or do you still need to scratch it off?
Title: Re: The 94 YZ/WR/iT project
Post by: Tanis on May 13, 2015, 02:05:53 PM
what components are damage? that soldering looks ugly I'm guessing its way before machine soldering and lead free solder so at least its easy to work on. really interested int he outcome of this repair.
Title: Re: The 94 YZ/WR/iT project
Post by: 2fITy.J on May 13, 2015, 06:05:30 PM
I tried acetone on the base of my 250J CDI....it looks like the "motherboard" slides into a hard plastic case....the acetone did diddly squat to the hard black foamy looking compound.....


Maybe I should leave it longer than 5 minutes.
Title: Re: The 94 YZ/WR/iT project
Post by: Tanis on May 13, 2015, 07:35:59 PM
I tried acetone on the base of my 250J CDI....it looks like the "motherboard" slides into a hard plastic case....the acetone did diddly squat to the hard black foamy looking compound.....


Maybe I should leave it longer than 5 minutes.
when in doubt remove some with a sharp scalpel and soak that little bit. 
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on May 13, 2015, 09:51:28 PM
Acetone only works on the soft potting.
Title: Re: The 94 YZ/WR/iT project
Post by: Zrt1200 on May 13, 2015, 11:12:51 PM
The bike looks good Mike, Any luck with the CDI?? I need to up load some more pics of our YZ/IT200 project to.

Al
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on May 15, 2015, 12:51:34 AM
The iT 250 CDI is at the Electronics Hospital...

(http://lh3.googleusercontent.com/-i8bJHnSnbDU/VVS14jrKKAI/AAAAAAAAP-w/e4U_iEdLXEM/s640/iT%252520CDI%252520A.jpg)

(http://lh3.googleusercontent.com/-TGanhuP3AdM/VVS14qamg5I/AAAAAAAAP-0/pt2GJ8mDt2A/s640/iT%252520CDI%252520B.jpg)
Title: Re: The 94 YZ/WR/iT project
Post by: fred99999au on May 15, 2015, 08:17:20 AM
I guess that is one way to do it. Hope you are taking note of where all of the components go and their polarity.

Can you trace out a circuit while you have it clean? Is the chip a common one or custom?
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on May 15, 2015, 10:08:42 AM
I guess that is one way to do it. Hope you are taking note of where all of the components go and their polarity.

Can you trace out a circuit while you have it clean? Is the chip a common one or custom?


Fred

This is way beyond me a Friend is repairing the CDI he's a electronics engineer for Union Switch & Signal, I think I could get Bill to build new CDIs. This is child's play to him.
Title: Re: The 94 YZ/WR/iT project
Post by: Zrt1200 on May 15, 2015, 12:22:58 PM

This is way beyond me a Friend is repairing the CDI he's a electronics engineer for Union Switch & Signal, I think I could get Bill to build new CDIs. This is child's play to him.

I here you there. I would have been lost right after you took the cover off. :D Glad to here its getting repaired by a qualified person.

Al
Title: Re: The 94 YZ/WR/iT project
Post by: fred99999au on May 17, 2015, 03:10:27 PM
The killer will be the chip. If it is a custom job, they wont be available at all would be my guess, same if is a Field Programmable chip, but I doubt that would be the case for this age of CDI.

I reckon that big yellow blob might just be the C from CDI though.
Title: Re: The 94 YZ/WR/iT project
Post by: 2fITy.J on May 17, 2015, 03:20:24 PM
Well the "black box" part of it has been (dis)solved......  :D :D
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on May 18, 2015, 06:38:08 AM
Bill ( Mr. Wizard ) says the ICs nothing special the CDI had a broken resister & a blown out Cap.

The interesting part of this the 81/83 uses a split CDI charging top coil for timing with the pulse coil.

(http://lh3.googleusercontent.com/-EheKCdOD5so/VVj6gWPyyuI/AAAAAAAAQCc/CFRzWhd65pY/s640/2.jpg)

(http://lh3.googleusercontent.com/-5jgFklJ0U_Y/VVj6gMRypkI/AAAAAAAAQCQ/qbctg2nEqVk/s640/1.jpg)

(http://lh3.googleusercontent.com/-IohFlbvH6kM/VVj6gZEWRrI/AAAAAAAAQCU/OkymFU3WUWk/s640/3.jpg)

(http://lh3.googleusercontent.com/-IaS4AMjB_rs/VVj6hTBokBI/AAAAAAAAQCg/DTQntfgqstA/s640/4.jpg)

The split coil stator. Blue wire in Red out.
(http://lh3.googleusercontent.com/-mAR4tBou6Fo/VRNsqwWea9I/AAAAAAAAPuc/1ZgWg8qX0ss/s640/B.JPG)


Title: Re: The 94 YZ/WR/iT project
Post by: Zrt1200 on May 18, 2015, 08:16:42 AM
I am Impressed.  8)

Al
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on May 18, 2015, 10:14:31 PM
I am Impressed.  8)

Al

Bill is amazing! He's a pilot too Bill is a instructor with a twin turbine rating we would fly on Sundays for hr's looking for old cars at 500ft!

This is the coil that makes all the difference between the pre 1981 Stator & CDI.

(http://lh3.googleusercontent.com/-mWpUfVplA5Q/VVnWONrYI5I/AAAAAAAAQC4/h4TMBM56jfw/s640/%252524T2eC16hHJIkFHR9jWybdBSebk%25252BDY4w%25257E%25257E60_57.JPG)
Title: Re: The 94 YZ/WR/iT project
Post by: Zrt1200 on May 20, 2015, 09:06:32 AM
Well thats some good info. Thanks Mike.

Al
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on May 20, 2015, 09:15:44 AM
Well thats some good info. Thanks Mike.

Al

Al the kick starter vs brake MS pivot bolt.

(http://lh3.googleusercontent.com/-BTJ2lKKXaOs/VVvDg8IwcQI/AAAAAAAAQDU/rOgvEA3v2IQ/s640/SAM_7852.JPG)

(http://lh3.googleusercontent.com/-NVG1iHzqDc4/VVvDcDP5nfI/AAAAAAAAQDM/88JvyXhB160/s640/SAM_7853.JPG)
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on June 07, 2015, 04:14:16 AM
It's alive!

[youtube]5dOEQSgGU9M[/youtube]
Title: Re: The 94 YZ/WR/iT project
Post by: gearhead86 on June 07, 2015, 04:32:55 AM
Good Job!


mmmmm!
This has got me thinking.

I can't wait for a ride report
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on June 07, 2015, 05:21:17 AM
It's starting on 1 kick now there was a lot of oil in the bottom end from trying to start with the bad CDI, now you could weld weld the sucker.. :D
Title: Re: The 94 YZ/WR/iT project
Post by: fred99999au on June 08, 2015, 07:10:52 PM
I gotta admit that I was starting to get worried at the length of the video at about the 1 minute mark.

Then she fired and things started falling off.

Well interested in a ride report as it sounds like a ripper.

Also be interested in what your electronics mate did to the dud CDI.
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on June 08, 2015, 10:53:06 PM
Fred

We tried to start it 2 weeks ago with when the CDI had problems there was a lot of fuel/oil in the bottom cases it cleared after a few kicks.

Things falling off was the lower chain roller I made a bracket for a kick ( It's a YZ chassis ) stand that's held on by the lower roller bolt no big deal..

On the CDI Bill found a few problems & change some old tech to 2015..

We talked about building new CDIs with new Tech he said there's a lot of room for improvement over the 30yr + old CDI that is getting weaker the more it's used..
Title: Re: The 94 YZ/WR/iT project
Post by: fred99999au on June 09, 2015, 08:28:33 AM
Yes, nowadays, you could do a direct replica with a microcontroller, some signal conditioning and a couple of output devices I reckon and you would never see the complexity as it would be in programming, not hardware.
Title: Re: The 94 YZ/WR/iT project
Post by: fred99999au on June 09, 2015, 07:02:08 PM
This has got me thinking about CDIs Al. Been doing a bit of reading and Chinese pit bike CDi units can be had for $15 or cheaper. 5 pin would suit most of my needs currently, so I might have a bit of a fiddle with this in the coming weeks.
Title: Re: The 94 YZ/WR/iT project
Post by: 2fITy.J on June 09, 2015, 07:07:29 PM
Been doing a bit of reading and Chinese pit bike CDi units can be had for $15 or cheaper.

I heard they run by Hampster wheels.....




Pit bikes....  ::)
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on June 09, 2015, 10:22:44 PM
This has got me thinking about CDIs Al. Been doing a bit of reading and Chinese pit bike CDi units can be had for $15 or cheaper. 5 pin would suit most of my needs currently, so I might have a bit of a fiddle with this in the coming weeks.

The problem is the 250H & J uses 4 inputs/charging coils & a pulse for the Ign advance circuity in the CDI. I  don't know why Yamaha did this does the H & J make more power? Was this a test mule for something down the road?

Notice the harness on the CDI 7 wires..
Title: Re: The 94 YZ/WR/iT project
Post by: fred99999au on June 09, 2015, 10:33:05 PM
I've heard of a high speed and low speed coil, but no idea what they do. I sort of assumed they would have a common ground which leaves one extra wire. What does your mate say about the way they work?

My 250H is a looooooong way from turning a wheel under its own steam.
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on June 10, 2015, 03:16:17 AM
I've heard of a high speed and low speed coil, but no idea what they do. I sort of assumed they would have a common ground which leaves one extra wire. What does your mate say about the way they work?

My 250H is a looooooong way from turning a wheel under its own steam.

The CDI charging coils are split into 4 coils i.e. red/blue top coil grey/white bottom coil from what Bill says the circuit in the CDI is split into 4 sub systems that sense the voltage drop as the magnets pass over the coil & turns on or tapers off a sub circuit to move the timing/adj it's complicated for 1980s.
Title: Re: The 94 YZ/WR/iT project
Post by: Zrt1200 on June 10, 2015, 09:31:20 PM
Glad to see you got it fired up Mike. I stated laughing when those 2 parts fell off and all I could think of was your boy for got to tighten stuff up. Thanks for my morning laugh. ;D

So now that its running has Mike had a chance to ride it yet??

Al
Title: Re: The 94 YZ/WR/iT project
Post by: Zrt1200 on June 10, 2015, 09:34:50 PM
This has got me thinking about CDIs Al. Been doing a bit of reading and Chinese pit bike CDi units can be had for $15 or cheaper. 5 pin would suit most of my needs currently, so I might have a bit of a fiddle with this in the coming weeks.

If you are thinking about buying a aftermarket CDI get one that is programmable. I would bet you would gain 5HP with retarding the timing on the top end. Just make sure to jet up one size if you do this.

Al
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on July 01, 2015, 09:33:04 AM
Mike got his first shakedown ride today on the project YZ/WR/iT The O-Ring chain & lower link bolt arrived, i had to make a new chain slider, I had to stretch widened the swingarm for the 18" WR rear wheel that put the slider out of line with the rear sprocket the new slider worked great.

The CDI worked great.

Mike's first impression tons of bottom end should be a good Enduro bike.

Mike

[youtube]tsWkz4cdnaE[/youtube]
Title: Re: The 94 YZ/WR/iT project
Post by: Zrt1200 on July 01, 2015, 09:51:54 AM
Glad to see you got it up and running Mike. ;D ;D ;D I am sure you will have a little tweaking here and there but I am glad to here it run and it sounds pretty good to my ear.

Al
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on July 01, 2015, 10:46:26 AM
Glad to see you got it up and running Mike. ;D ;D ;D I am sure you will have a little tweaking here and there but I am glad to here it run and it sounds pretty good to my ear.

Al

Thanks Al, We pulled the plug looks a little lean but Mike never got to half throttle.

Mike
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on July 04, 2015, 04:59:20 AM
More testing found the it's lean up top 38mm flat slide with a 360 main & the clip in #2 slot but the plug was wet? We pulled the carb checked the float level main jet size (360) moved the clip down 1 pulled the reed cage make sure nothing going on there go to put the reed back in and it's hitting the cylinder on the outside edge of the cage & holding down the outside valves! This reed cage is the 94 YZ 250 with Boysen reeds the outside edge of the reeds are slammed shut I went back to the iT 250H reed (steel valves) they clear & open to the stop mike just took a ride what a beast it's working now...

I'll make a vid later we have a clutch problem need fixed.

Mike
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on July 04, 2015, 07:52:36 AM
Fixed the clutch Adj nut on the basket came loose.

[youtube]l7sCkFvKoG4[/youtube]

[youtube]ImHrmbVQPuo[/youtube]
Title: Re: The 94 YZ/WR/iT project
Post by: 2fITy.J on July 04, 2015, 10:58:08 AM
Yep, very disconcerting when that adjuster nut undoes itself...happened on my 465 in among the trees. I'm thinking a reed spacer is needed for the YZ cage.

Your lad looks a pro, has the kick and fold lever motion down pat.  8) 8)

Bike sounds sweet, great vids.
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on July 04, 2015, 12:54:58 PM
Yep, very disconcerting when that adjuster nut undoes itself...happened on my 465 in among the trees. I'm thinking a reed spacer is needed for the YZ cage.

Your lad looks a pro, has the kick and fold lever motion down pat.  8) 8)

Bike sounds sweet, great vids.

2fITy.J,I was thinking of the spacer but I can't move the carb back the air filter duct work is just touching the coil spring now.

Mike
Title: Re: The 94 YZ/WR/iT project
Post by: 2fITy.J on July 04, 2015, 02:40:01 PM
Oh yeah...of course, it's hybridised...  ::)

Well it sounds to be running well and good now anyway.



Cheers,
Chris.
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on August 09, 2015, 05:10:52 AM
Bill stopped by today with the brand new 2015 iT 250H & J CDI all brand new components, this CDI could be in any iT250 engine just use the duel coil stator for the timing advance circuit.

(http://lh3.googleusercontent.com/-8d0EGGICcYw/VcZUAlUjXYI/AAAAAAAAQQ8/nMcp6Kr7JJo/s640-Ic42/SAM_8165.JPG)
Title: Re: The 94 YZ/WR/iT project
Post by: wayne61 on August 09, 2015, 07:12:06 AM
Bill is a legend  ;D
Very interested in this development.
Good work Guys.
Title: Re: The 94 YZ/WR/iT project
Post by: Wado on August 09, 2015, 06:35:23 PM
Great to see all your hard work come to fruition.
I saw a guy on a FB page the other day get quoted $750 Aus for a genuine Yamaha It 250 CDI Nos.
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on August 13, 2015, 12:15:03 PM
The new connectors arrived OEM plug & Play.

(http://lh3.googleusercontent.com/-haZCiiYv5yM/Vcv9WXroKhI/AAAAAAAAQR4/PIE6uTBoEQI/s640-Ic42/AACDIA.jpg)

(http://lh3.googleusercontent.com/-WO_oN97IWg8/Vcv9WXEeeGI/AAAAAAAAQR8/-KIPRcUDz3g/s640-Ic42/AACDIB.jpg)
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on August 17, 2015, 07:34:57 AM
Today was test day for the New iT250H & J CDI & it worked great!

[youtube]EdbO9TlFtdc[/youtube]
Title: Re: The 94 YZ/WR/iT project
Post by: Tanis on August 19, 2015, 04:37:55 PM
Great to see all your hard work come to fruition.
I saw a guy on a FB page the other day get quoted $750 Aus for a genuine Yamaha It 250 CDI Nos.

old components don't age like fine wine? 750 for a CDI that could give out amazing prices. I have been thinking of reverse engineering some of these older CDIs there not especially complex but still most likely at the edge of my skills there not going to be making any more and the most places that sell aftermarket ones are taking the p_ss or of dubious quality :( 

Bill stopped by today with the brand new 2015 iT 250H & J CDI all brand new components, this CDI could be in any iT250 engine just use the duel coil stator for the timing advance circuit.

(http://lh3.googleusercontent.com/-8d0EGGICcYw/VcZUAlUjXYI/AAAAAAAAQQ8/nMcp6Kr7JJo/s640-Ic42/SAM_8165.JPG)

That is a really nice very professional job of excellent quality I bet it lasts longer than the original OEM CDI. Neat tidy and nice soldering work almost looks machine done. Bill sure has some skills. 
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on August 19, 2015, 09:13:50 PM
I'll find out the price on the new CDI Bill mentioned this model CDI is not reproduced & I'm sure they will be well below $750.00!

Title: Re: The 94 YZ/WR/iT project
Post by: Wado on August 19, 2015, 09:41:47 PM
Good luck with that map 351 you might just be onto a nice little niche market there. :)
That board looks amazing.Very professional.
I have a mate who part runs a small electronics manufacturing/assembly factory in Sydney if you need to pump out a few boards!
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on August 19, 2015, 10:05:39 PM
Good luck with that map 351 you might just be onto a nice little niche market there. :)
That board looks amazing.Very professional.
I have a mate who part runs a small electronics manufacturing/assembly factory in Sydney if you need to pump out a few boards!

Bill had 10 boards made here in the U.S, He's thinking on shrinking the CDI down to a YZ CDI size.
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on October 11, 2015, 10:09:54 AM
The iT 250H test machine!

[youtube]mjgoRLA4HSY[/youtube]

(http://lh3.googleusercontent.com/-tS6QZFivfXA/VhmZ2CZwaqI/AAAAAAAAQhk/Oe9DanFpa8g/s640-Ic42/SAM_8461.JPG)

(http://lh3.googleusercontent.com/-1e44g9x7vZo/VhmZ0KSuzuI/AAAAAAAAQhc/SZhmlKFX7O0/s640-Ic42/SAM_8462.JPG >:()

(http://lh3.googleusercontent.com/-iogp6RURp4g/VhmZ6Vy4VCI/AAAAAAAAQhs/qEXPP70sn-U/s640-Ic42/SAM_8463.JPG)

(http://lh3.googleusercontent.com/-ABy3-PtSlPo/VhmaLdXI7bI/AAAAAAAAQh0/DNbdTVPlLUg/s640-Ic42/SAM_8465.JPG)
Title: Re: The 94 YZ/WR/iT project
Post by: 2fITy.J on October 11, 2015, 10:30:02 AM
Every man should have one.....  ;)

Very impressed....and personally very topical.




Cheers,
Chris.
Title: Re: The 94 YZ/WR/iT project
Post by: sweede490 on October 11, 2015, 11:04:51 AM


  Likewise, that is impressive  :o  fantastic work that test alone speaks volumes for the workmanship thats  gone into it  ;D


        Awsum


     
    Muzz
 
Title: Re: The 94 YZ/WR/iT project
Post by: Martin I Henry on October 11, 2015, 06:50:36 PM
Very impressive !

Bill seems to enjoy his work !

Cheers,

Dave R.
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on October 21, 2015, 09:31:22 AM
Carnage today and it was flyin!

(http://lh3.googleusercontent.com/-VJtuYWh2Tb8/Via9yVqBGpI/AAAAAAAAQl8/B0M9XmCcpJg/s640-Ic42/SAM_8499.JPG)

(http://lh3.googleusercontent.com/-DrvFLdWO_N4/Via93IpZzhI/AAAAAAAAQmE/v7YPUqINcDE/s640-Ic42/SAM_8500.JPG)

(http://lh3.googleusercontent.com/-qF2VJuXB5Jw/Via-VIY5YcI/AAAAAAAAQmc/nMhy0JcjaPw/s640-Ic42/SAM_8502.JPG)

(http://lh3.googleusercontent.com/-Tnc_KUD4f_Q/Via---ncFBI/AAAAAAAAQms/vsSLba_u1j4/s640-Ic42/SAM_8505.JPG)

(http://lh3.googleusercontent.com/-T5ULck7ys_k/Via_c5yA-DI/AAAAAAAAQnE/5_uaSVXwBdQ/s640-Ic42/SAM_8509.JPG)

(http://lh3.googleusercontent.com/-V-lAzt6U-E0/Via_inxnVUI/AAAAAAAAQnM/VEbrxB5Adxw/s640-Ic42/SAM_8510.JPG)
Title: Re: The 94 YZ/WR/iT project
Post by: 2fITy.J on October 21, 2015, 10:19:48 AM
Ooh....  :o


Hmmm....bit of Devcon should fix that...bung it on ebay....been done before....  ::)

Good luck.

..fix or replace?



Cheers,
Chris.
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on October 21, 2015, 11:31:51 AM
I've heard of them cracking but nothing like this!
I have another with a fresh sleeve.

Mike
Title: Re: The 94 YZ/WR/iT project
Post by: 2fITy.J on October 21, 2015, 12:55:18 PM
I've heard of them cracking but nothing like this!


and it was flyin!



Ahem.....  :o

Nice three piece landing.....  :D :D :D :D :D :D :D :D
Title: Re: The 94 YZ/WR/iT project
Post by: harko on October 21, 2015, 04:37:42 PM
Ouch, what caused this? Crash, bottom out, engine mount? looks terminal.(stating the bleedin' obvious)

Not good.

Love the CDI tester, that is brilliant work.  :)

Harko
Title: Re: The 94 YZ/WR/iT project
Post by: Zrt1200 on October 21, 2015, 10:25:47 PM
I talked to Mike last night on his cylinder. He was not running a head stay so thats out. I had him check to see if the piston swatted the head, Nope so that was not the problem, I asked if the rod, crank and wrist pin bearings were tight. All good there. I also asked if there was any detro marks in the piston top. Nope. So from what I can see and from what he told me it was a bad casting. I have seen castings that did not receive there proper heat treat after the machining phase which will stiffen the casting considerable. Those castings will fail eventually and I would bet this is one of them.

Al
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on October 21, 2015, 11:16:37 PM
Looks like a pattern here, another one cracked same spot right front bolt hole I chased a leak in this spot.

http://dirtrider.net/forums3/threads/cracked-cylinder-base-on-a-85-yamaha-it-250.134621/

"My 85 yamaha IT 250 has a small hairline crack at the base of the cylinder which is were the front right cylinder base nut is located. It also weepes. Can I get this welded without it cracking again? Thanks."


Mike
Title: Re: The 94 YZ/WR/iT project
Post by: itdog on October 22, 2015, 12:39:19 AM
mine has the same crack!!........welded by someone many moons ago seems to have held well, take those friggin head stays off!!!
Title: Re: The 94 YZ/WR/iT project
Post by: CBR600 on October 22, 2015, 11:56:48 AM
You can get a fully programmable 12v ecu for around the 400-450 au.
May I ask what is the timing set at? - Oem or has the timing been advanced
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on October 23, 2015, 03:12:27 AM
You can get a fully programmable 12v ecu for around the 400-450 au.
May I ask what is the timing set at? - Oem or has the timing been advanced


16 deg.
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on October 23, 2015, 03:15:06 AM
On the junk cylinder, here's the head & piston no hits. And no I didn't have 20% Nitro in the tank. :D

(http://lh3.googleusercontent.com/-r0mKYDoBbkI/VieirH2mgXI/AAAAAAAAQpg/WVUwoPqoFSM/s640-Ic42/SAM_8515.JPG)

(http://lh3.googleusercontent.com/-Xh-cX9_FXqo/Viei1x8flXI/AAAAAAAAQpo/2jaeLmYuhqg/s640-Ic42/SAM_8516.JPG)

(http://lh3.googleusercontent.com/-Uw3hyGp4ILg/ViejrcGMboI/AAAAAAAAQp0/xC7_TjjirWU/s640-Ic42/SAM_8517.JPG)

(http://lh3.googleusercontent.com/-xBSEyZdHhkc/ViejtoqocNI/AAAAAAAAQp8/aFrG7bX5XFc/s640-Ic42/SAM_8518.JPG)

(http://lh3.googleusercontent.com/--YkIuSAC82Q/Via-IFmhyAI/AAAAAAAAQmM/1cHPK94OLpQ/s640-Ic42/SAM_8501.JPG)
Title: Re: The 94 YZ/WR/iT project
Post by: Martin I Henry on January 04, 2016, 07:55:14 AM
Mike, any progress on the IT250 CDI project ?

I'll be needing one sometime later in the Year !......... If I get my act together !!

Cheers,

Dave R.
Title: Re: The 94 YZ/WR/iT project
Post by: harko on January 04, 2016, 08:13:07 AM
Ditto on the CDI Dave. I'm after one for the 250 J. So there could be a market for at least two . I'm sure there would be more.

Harko
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on January 04, 2016, 11:39:09 AM
Dave & Harko

Bill was here yesterday we got the YZ/WR/IT back up & running with a fresh bore & 71mm wiesco.
Bill has miniaturized the CDI box & board changed a few things inside we tried a new smaller version the bike started 1 kick stone cold & the throttle response feels crisper.
Album>>>  http://picasaweb.google.com/73turbopinto/1993YamahaYZWRITProject

I'll get more info from Bill & pass it along in this thread.

One more thing on the CDI Bill is doing a little research using the same CDI on the IT465.

Mike

(http://lh3.googleusercontent.com/-b8BCRrfCu3Q/Vom7uYjzoNI/AAAAAAAAQ4Y/8x6PqSVJ24M/s640-Ic42/SAM_8755.JPG)

(http://lh3.googleusercontent.com/-MKL4UlGT0VA/Vom7_QEvRdI/AAAAAAAAQ4g/GGtwK_n-LMY/s640-Ic42/SAM_8752.JPG)

(http://lh3.googleusercontent.com/-aB9FMeb_KBg/Vom8Fn5zVpI/AAAAAAAAQ4o/r2P2UOr1Pp0/s640-Ic42/SAM_8753.JPG)

(http://lh3.googleusercontent.com/-YLKy9rRLksk/Vom8VxajChI/AAAAAAAAQ44/vXqPtJQ-ndQ/s640-Ic42/SAM_8758.JPG)

(http://lh3.googleusercontent.com/-tqvTI0cDHOw/Vom8qY2iIRI/AAAAAAAAQ5I/o-QZhPAWP2I/s640-Ic42/SAM_8756.JPG)

(http://lh3.googleusercontent.com/-YjUM8O1Gq8k/Vom8njTAVqI/AAAAAAAAQ5A/I_jjGT5tz4U/s640-Ic42/SAM_8757.JPG)



 
Title: Re: The 94 YZ/WR/iT project
Post by: Wado on January 04, 2016, 03:20:03 PM
Map 351 You guys are doing a great job, interesting stuff.
Is the mysterious Bill going to make an appearance on the forum ? ;)

I was looking through your photos and what a treasure trove that shed of yours is. Looks like you have a few projects on the go there :)




Cheers
Heath
Title: Re: The 94 YZ/WR/iT project
Post by: wjmoltz on January 04, 2016, 04:42:06 PM
Hi Guys,

I'm Bill, Mike's friend (MAP351).  Thanks for your interest in the new IT250H/J CDI.  It's nearly ready to go, I just want to get some real-world hours on it using Mike's bike to make sure everything is okay.

Let me know if you have any questions.

Bill
Title: Re: The 94 YZ/WR/iT project
Post by: 2fITy.J on January 04, 2016, 05:38:14 PM
Hi Bill, welcome to the forum. I have the '82 250 and 465 IT's (essentially the same as the '81 H models) and have had CDI issues before. I would be very interested...also there is one wire less for the 465's CDI than the 250, but I can't figure out what the difference is for...me and electrics don't get on so it's most likely staring me in the face....



Cheers,
Chris.
Title: Re: The 94 YZ/WR/iT project
Post by: Wado on January 04, 2016, 09:10:55 PM
Hi Bill and welcome to the forum.
I have been intrigued watching the progress of your CDI. Fantastic job to reverse engineer all that. I tip my hat to you and map351 :)

Cheers
Heath
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on January 04, 2016, 11:17:49 PM
Map 351 You guys are doing a great job, interesting stuff.
Is the mysterious Bill going to make an appearance on the forum ? ;)

I was looking through your photos and what a treasure trove that shed of yours is. Looks like you have a few projects on the go there :)




Cheers
Heath

Heath, Yes a lot of irons in the fire now you see why I haven't got to the fiberglass fuel tank yet.

Mike

Title: Re: The 94 YZ/WR/iT project
Post by: Zrt1200 on January 04, 2016, 11:34:31 PM
Welcome Bill. Any chance you would be interested in building a CDI box for the IT200?? The stock box has Zero retard and there is some HP to be had with retarding it. I have a spare CDI box I could send you if would be interested. If interested Im thinking keep the stock timing all the way to around 6000 Rpms then retard it to around 14-15 degree's at 8000-8500RPM. I also have a spare case and Im sure I have a parts crank laying around that could be used for the cause. Thanks. Al


PS Dont forget to oil those crank bearings when testing a new CDI box.  ;D
Title: Re: The 94 YZ/WR/iT project
Post by: Martin I Henry on January 05, 2016, 07:20:28 AM
Welcome to the forum Bill !

Cheers,

Dave R.
Title: Re: The 94 YZ/WR/iT project
Post by: fred99999au on January 05, 2016, 08:31:39 AM
Welcome to the forum, Bill.

Presume you will be potting that PCB before fitting to a bike as the vibrations on these are enormous especially for that cap.
Title: Re: The 94 YZ/WR/iT project
Post by: wjmoltz on January 05, 2016, 01:15:49 PM
Welcome to the forum, Bill.

Presume you will be potting that PCB before fitting to a bike as the vibrations on these are enormous especially for that cap.

Yes, the boxes will be potted.  I'm just giving everyone a look so they can see the circuit quality.
Title: Re: The 94 YZ/WR/iT project
Post by: wjmoltz on January 05, 2016, 01:30:34 PM
Hi Bill, welcome to the forum. I have the '82 250 and 465 IT's (essentially the same as the '81 H models) and have had CDI issues before. I would be very interested...also there is one wire less for the 465's CDI than the 250, but I can't figure out what the difference is for...me and electrics don't get on so it's most likely staring me in the face....

Cheers,
Chris.

Not sure what the difference is.  It looks like the 465 box doesn't use the grey wire, which is used to power the delay circuitry in the 250 box.  The IT250H/J calls for 16.5 before TDC @ 5000 rpm, where the 465 calls for 16 @ 2000 rpm.  I would have to get a 465 box and dissect it to see what the difference is.
Title: Re: The 94 YZ/WR/iT project
Post by: 2fITy.J on January 05, 2016, 02:08:04 PM
Excellent, thank you....you have very simply given me the answer to what no-one else has been able to.   8)

Big thanks for having at go at this Bill/Mike.

Also, the YZ465G/H and YZ490J has the same CDI box as the IT465H/J.



Cheers,
Chris.
Title: Re: The 94 YZ/WR/iT project
Post by: wjmoltz on January 05, 2016, 02:11:41 PM
Welcome Bill. Any chance you would be interested in building a CDI box for the IT200?? The stock box has Zero retard and there is some HP to be had with retarding it. I have a spare CDI box I could send you if would be interested. If interested Im thinking keep the stock timing all the way to around 6000 Rpms then retard it to around 14-15 degree's at 8000-8500RPM. I also have a spare case and Im sure I have a parts crank laying around that could be used for the cause. Thanks. Al


PS Dont forget to oil those crank bearings when testing a new CDI box.  ;D


I might be interested in designing an IT200 CDI, but first I have to see if the IT250H/J units sell.  I have a lot of time and money invested in this project, so before I start another one, I need to see what happens with the IT250.   

Basically, my intention is to design and offer CDI boxes that no one else is making.  There is no way I can compete with the "Made in China" boxes that everyone else is selling.  BTW, what is the year of your IT200, and do you know if anyone is selling new CDI's for it?  If not, this may be a good candidate for a future re-design.
 
At this point, unless I get a huge demand for something else, I'm thinking of one of these CDI boxes for my next project.

76-79 it400
79-82 it465
83-84 it490

Thanks,

Bill

Title: Re: The 94 YZ/WR/iT project
Post by: wjmoltz on January 06, 2016, 01:14:23 PM
Welcome to the forum Bill !

Cheers,

Dave R.

Hi Dave,

Received the information you sent, thanks!  I can't send PMs yet, since I don't have 20 posts yet.

Regards,

Bill
Title: Re: The 94 YZ/WR/iT project
Post by: fred99999au on January 06, 2016, 01:18:05 PM
Righto, i'll help you out Bill. Are the CDI units analogue using OP Amps?

Possibility of doing a digital version that crosses model boundaries??
Title: Re: The 94 YZ/WR/iT project
Post by: wjmoltz on January 06, 2016, 01:47:21 PM
Righto, i'll help you out Bill. Are the CDI units analogue using OP Amps?

Possibility of doing a digital version that crosses model boundaries??

Hi Fred,

The IT250 CDI is comprised of both analog and digital circuitry, but no microprocessors.  I have thought about designing a microprocessor based unit that would allow for timing parameter adjustments, just not sure which CDI to start with.

Regards,

Bill
Title: Re: The 94 YZ/WR/iT project
Post by: Bigshorts on January 06, 2016, 02:47:15 PM


IT200  ;D ;D ;D ;D !!
Title: Re: The 94 YZ/WR/iT project
Post by: paul-66 on January 06, 2016, 09:04:06 PM
ditto IT 200  ;D ;D ;D ;D !!
Title: Re: The 94 YZ/WR/iT project
Post by: Mikedi on January 09, 2016, 10:13:15 PM
How about an 83 250k? will these work?
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on January 10, 2016, 07:00:53 AM
How about an 83 250k? will these work?

North East?
Title: Re: The 94 YZ/WR/iT project
Post by: wjmoltz on January 10, 2016, 07:08:43 AM
How about an 83 250k? will these work?

Sorry, not sure if you're asking if the IT250H/K will work on the IT250K, or if that's your suggestion for my next development.

This might be a good candidate, since it is used on so may different bikes.  However, I did some looking and found that is it available through Rexs Speedshop, and I don't know if I can compete with there price.

Bill
Title: Re: The 94 YZ/WR/iT project
Post by: Mikedi on January 10, 2016, 09:06:51 AM
Rhode Island

North East?
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on January 18, 2016, 04:25:53 AM
Vid Testing the new CDI. The Cyl temp only got to 94 Deg.

[youtube]Po9esFwKI9Q[/youtube]
Title: Re: The 94 YZ/WR/iT project
Post by: Martin I Henry on January 19, 2016, 06:53:31 AM
That's what I like to see, one kick and it's running !

Thanks for posting the video.

Cheers,

Dave R.
Title: Re: The 94 YZ/WR/iT project
Post by: Bigshorts on January 19, 2016, 10:18:40 AM

excellent work well done

Shorts
Title: Re: The 94 YZ/WR/iT project
Post by: harko on January 19, 2016, 03:29:58 PM
I contacted Rex's sometime ago and they replied that there wasn't a 250 H CDI unit available and they weren't going to make one. Short and sweet.

Harko
Title: Re: The 94 YZ/WR/iT project
Post by: Wado on January 19, 2016, 09:51:06 PM
Looking great!
Love that sound echoing through the the hills takes me right back...
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on January 22, 2016, 05:05:56 AM
That time again! 240 Tapcon concrete screws in the rear tire. Vid later!

(http://lh3.googleusercontent.com/-gUADdBjS9tU/VqEcZds1d-I/AAAAAAAAQ9M/oZZ7JSLRUVc/s640-Ic42/SAM_8820.JPG)

(http://lh3.googleusercontent.com/-j0WheZEamQg/VqEciQfwcRI/AAAAAAAAQ9U/H8htAlfONiQ/s640-Ic42/SAM_8821.JPG)

(http://lh3.googleusercontent.com/-W4uoBErxMgM/VqEckRbjIYI/AAAAAAAAQ9c/bKbhHsDP7fQ/s640-Ic42/SAM_8822.JPG)

(http://lh3.googleusercontent.com/-m6Sy2l3PYD4/VqEctldpaQI/AAAAAAAAQ9k/qbt05EHw8Bs/s640-Ic42/SAM_8823.JPG)

(http://lh3.googleusercontent.com/-AOHwFtBBNPU/VqEc9tNq0UI/AAAAAAAAQ90/Krt0FlqY9h0/s640-Ic42/SAM_8825.JPG)
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on January 22, 2016, 09:06:43 AM
The bike is running the new CDI.

[youtube]9phaj9uxwWE[/youtube]

[youtube]GfE-9lt6x1E[/youtube]
Title: Re: The 94 YZ/WR/iT project
Post by: wjmoltz on April 05, 2016, 01:32:33 PM
Okay guys, the IT250 CDI is ready to go.  It has been in development for nearly one year and has been running on map351's bike for the past several months.  I attached a photo of the new module and inserted a link to my website.  Thanks for your interest in this project.

http://www.dynotronix.com/ (http://www.dynotronix.com/)


Title: Re: The 94 YZ/WR/iT project
Post by: 2fITy.J on April 05, 2016, 04:41:49 PM
Excellent work fella's, quality looking unit and the website it great.





Cheers,
Chris.
Title: Re: The 94 YZ/WR/iT project
Post by: harko on April 05, 2016, 04:53:09 PM
Great stuff and I've contacted the website re postage costs, fingers crossed.

Harko
Title: Re: The 94 YZ/WR/iT project
Post by: wjmoltz on April 06, 2016, 08:39:06 AM
Great stuff and I've contacted the website re postage costs, fingers crossed.

Harko
Hi Harko,  I sent you a reply about the shipping.  Thanks,

Bill
Title: Re: The 94 YZ/WR/iT project
Post by: harko on April 06, 2016, 10:06:41 PM
Hello Bill,

I've sent a PM

Harko
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on April 07, 2016, 12:35:45 AM
We were going to make a new Video of the CDI project in action but a NEW THROTTLE CABLE BROKE!
Title: Re: The 94 YZ/WR/iT project
Post by: harko on April 07, 2016, 12:49:02 PM
Bought, now we wait.



Harko
Title: Re: The 94 YZ/WR/iT project
Post by: 2fITy.J on April 07, 2016, 12:51:28 PM
NEW THROTTLE CABLE BROKE!


New old stock or aftermarket replica?


Bummer either way!
Title: Re: The 94 YZ/WR/iT project
Post by: harko on April 07, 2016, 03:43:00 PM
I have bought one of these out of necessity , Bought one off ebay that had a dodgy wire that needed fixing , which I fixed and it works perfectly but

. The other reason is wanting to support this sort of endeavour. I love it when someone has the know how and drive to do this sort of thing. Similar

to Chris's guards. Brilliant.

So I have emailed and conversed with Bill via email and he should be sending it very soon.

Harko
Title: Re: The 94 YZ/WR/iT project
Post by: 2fITy.J on April 07, 2016, 04:44:38 PM
Onya harko!   8)


I did something similar recently (CDI) but unfortunately it was a fail....but I was recompensed and the company is now not trying to sell them off for the wrong bikes, which is a good thing.



Cheers,
Chris.
Title: Re: The 94 YZ/WR/iT project
Post by: fred99999au on April 07, 2016, 07:12:01 PM
It wasnt those Chinese ones was it Chris?

Quote
Bought one off ebay that had a dodgy wire that needed fixing , which I fixed and it works perfectly

I call bullshit. Pics or it didnt happen.
Title: Re: The 94 YZ/WR/iT project
Post by: 2fITy.J on April 07, 2016, 07:36:18 PM
It wasnt those Chinese ones was it Chris?

(http://gif-finder.com/wp-content/uploads/2015/12/Kramer-Yes-Nod.gif)[/url]
Title: Re: The 94 YZ/WR/iT project
Post by: harko on April 07, 2016, 10:08:19 PM
Works , do I have to get the box brownie out again, tell me you're going to take my word that my three kids are mine! 

I'll add this to my ever growing video collection. Better still Freddie arbuckle, I'll invite you round when I get the cdi from the US and well have a beer and we can witness the miracle that is a cdi reborn .


Harko
Title: Re: The 94 YZ/WR/iT project
Post by: fred99999au on April 07, 2016, 10:12:29 PM
Youre on.
Title: Re: The 94 YZ/WR/iT project
Post by: harko on April 19, 2016, 03:25:33 PM
Well this arrived yesterday and I'll be giving it a workout this Saturday.
(http://i1342.photobucket.com/albums/o765/Harkoo/SANY0217_zps8vlich9n.jpg) (http://s1342.photobucket.com/user/Harkoo/media/SANY0217_zps8vlich9n.jpg.html)
So anyone who knows where I live can drop by around noon if they wish.
Harko
Title: Re: The 94 YZ/WR/iT project
Post by: 2fITy.J on April 19, 2016, 04:35:40 PM
At long last....A CDI unit with the model of the bike it fits clearly identified.

Brilliant that.


Top effort fella's, I shall be in for one when things settle down here (read I've saved up again).





Cheers,
Chris.
Title: Re: The 94 YZ/WR/iT project
Post by: fred99999au on April 20, 2016, 07:58:45 AM
Will we be taking turns at wheelies up and down your street again?
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on April 20, 2016, 09:32:40 AM
Mike was out flogging the YZ/WR/IT last weekend never missed a beat Bill's CDI is working great we have the test mule 01.

Mike
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on April 21, 2016, 08:56:00 AM
[youtube]hh5kSbuiEFw[/youtube]
Title: Re: The 94 YZ/WR/iT project
Post by: 2fITy.J on April 21, 2016, 10:13:27 AM
Great stuff!  Sounds very crisp.





Cheers,
Chris.
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on April 21, 2016, 10:35:21 AM
Great stuff!  Sounds very crisp.





Cheers,
Chris.

It's running great with the new cyl this one appears to be holding up fine so far, the FMF fatty pipe works we keep gearing up it has tons of bottom end the combo just works!

On the new CDI working fine no problems at all.
Mike
Title: Re: The 94 YZ/WR/iT project
Post by: harko on April 23, 2016, 04:32:36 PM
Put the new CDI on today, started no problems after a quick check that all connections were in fact connected.

Went up and down the street a few times. Didn't miss a beat and very crisp.

Have stored the old CDI away and the repaired one (FRED9999999) in the Garage. So if anyone needs one to get out of trouble then I have one you can borrow.

Harko
Title: Re: The 94 YZ/WR/iT project
Post by: 2fITy.J on April 23, 2016, 04:44:32 PM
Does it strap into the smaller 465 holders harko or the stock 250 size?



Cheers,
Chris.
Title: Re: The 94 YZ/WR/iT project
Post by: harko on April 23, 2016, 07:19:08 PM
Chris I didnt even look at the 465, it's too small for the 250 but because there are a lot of anchor points in that area I dont think it will struggle to house .

Harko
Title: Re: The 94 YZ/WR/iT project
Post by: 2fITy.J on April 23, 2016, 07:22:06 PM
It's the size of the 465's unit then. The J frames have hooks for both the smaller 465 CDI and the large 250 CDI....250 and 465 frames are same.
Title: Re: The 94 YZ/WR/iT project
Post by: wjmoltz on April 23, 2016, 10:47:54 PM
Put the new CDI on today, started no problems after a quick check that all connections were in fact connected.

Went up and down the street a few times. Didn't miss a beat and very crisp.

Have stored the old CDI away and the repaired one (FRED9999999) in the Garage. So if anyone needs one to get out of trouble then I have one you can borrow.

Harko

So, when are we going to have that beer you talked about? :)
Title: Re: The 94 YZ/WR/iT project
Post by: wjmoltz on April 23, 2016, 11:15:35 PM
Does it strap into the smaller 465 holders harko or the stock 250 size?



Cheers,
Chris.
Hi Chris,

I don't know if this helps, but the CDI dimensions are 79mm L x 53mm W x 23mm H. 

In inches, 3.110" L x 2.096" W x 0.905" H.

Bill
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on April 24, 2016, 02:32:20 AM

Went up and down the street a few times. Didn't miss a beat and very crisp.

Harko


I noticed the crisp/snappy engine note went back to the old CDI and there is a difference.

Mike
Title: Re: The 94 YZ/WR/iT project
Post by: wjmoltz on April 24, 2016, 03:54:11 AM
I noticed the crisp/snappy engine note went back to the old CDI and there is a difference.

Mike
The reason is that the timing signals on the OEM CDI are noisier than the new CDI_IT250H/J.  When doing comparison testing on the bench, I noticed that the signals on the OEM unit are somewhat erratic, and it's harder to get the oscilloscope to trigger consistently.  On the new CDI, the signals are much cleaner and steady.  It also helps that the new CDI puts out about 5% more voltage to the coil than the OEM unit, which makes the spark a little hotter. 

Bill
Title: Re: The 94 YZ/WR/iT project
Post by: harko on April 24, 2016, 04:09:04 PM
Hello Bill, whenever you're in the area feel free to drop in. The numbers 28  ;D

All looking good , thanks very much.

Harko
Title: Re: The 94 YZ/WR/iT project
Post by: wjmoltz on April 25, 2016, 01:27:41 PM
Okay Guys, the next CDI redesign will be a replacement for Yamaha module, 2W6-85540-20-00.

It's supposed to fit all of these models.

1979 IT175F
1980 IT125G
1980 IT175G
1981 IT125H
1981 IT175H
1982 IT175J
1983 IT175K
1983 IT490K
1984 IT490L

Any feedback is appreciated.

Bill
Title: Re: The 94 YZ/WR/iT project
Post by: Bigshorts on April 26, 2016, 09:51:18 AM

i'll take two

shorts
Title: Re: The 94 YZ/WR/iT project
Post by: wjmoltz on April 26, 2016, 09:57:32 AM
i'll take two

shorts
Thanks, I'll let you know when they're ready.   ;D
Title: Re: The 94 YZ/WR/iT project
Post by: Bigshorts on April 26, 2016, 10:34:25 AM

I can confirm the compatibility between the 180 175G and the 490K and L models, interestingly hte shape is different but it does swap

Shorts
Title: Re: The 94 YZ/WR/iT project
Post by: wjmoltz on April 26, 2016, 10:41:36 AM
I can confirm the compatibility between the 180 175G and the 490K and L models, interestingly hte shape is different but it does swap

Shorts
Are the wire connectors (and there genders) the same on these bikes?
Title: Re: The 94 YZ/WR/iT project
Post by: wayne61 on June 23, 2016, 03:23:15 AM
Another satisfied customer  :)
Contacted Bill week before last and we swapped some mail, some of it in real time whilst I was eating dinner. :D
Placed an order and Bill had the package in the post within the hour.
We both tracked it and were confused when it appeared to spend a week in London Airport but I finally picked it up this evening.
Wow, unit looks amazing, fantastic workmanship. Will get it fitted and running by the weekend (nah, fuggit, tonight...)
Really impressed with Bill's customer service too, can't thank you enough mate.
"You sir are a steely eyed motorcycle man"
I've promised myself a top 10 finish next time out, I'm sure this will be part of it.
Will keep y'all posted.

(http://i1036.photobucket.com/albums/a441/waynecoward61/Mobile%20Uploads/20160622_180909_zpsf0ilry7z.jpg~original) (http://s1036.photobucket.com/user/waynecoward61/media/Mobile%20Uploads/20160622_180909_zpsf0ilry7z.jpg.html)
Title: Re: The 94 YZ/WR/iT project
Post by: wayne61 on June 23, 2016, 05:13:45 AM
Fitted.
Started first half arsed prod.
Ran it for a bit then shut down, didn't want to disturb my neighbours enjoyment of the European Football on tv  ;D
Stoked.
Two thumbs way up.
Title: Re: The 94 YZ/WR/iT project
Post by: wjmoltz on June 23, 2016, 07:14:28 AM
Fitted.
Started first half arsed prod.
Ran it for a bit then shut down, didn't want to disturb my neighbours enjoyment of the European Football on tv  ;D
Stoked.
Two thumbs way up.
Thanks, Wayne.  When you get a chance to really put it through its paces, please provide feedback, good or bad.  I want to make sure I'm providing the best product I can.

Regards,

Bill
Title: Re: The 94 YZ/WR/iT project
Post by: wayne61 on June 24, 2016, 05:30:45 AM
(http://i1036.photobucket.com/albums/a441/waynecoward61/Mobile%20Uploads/20160623_202825_resized_zps7nin64s8.jpg~original) (http://s1036.photobucket.com/user/waynecoward61/media/Mobile%20Uploads/20160623_202825_resized_zps7nin64s8.jpg.html)

Little bit of recognition  ;)

Title: Re: The 94 YZ/WR/iT project
Post by: map351 on June 24, 2016, 06:05:24 AM
The Skunk Works Mini CDI is still working great on the YZ/WR/IT...

(http://a.fastcompany.net/multisite_files/fastcompany/imagecache/inline-large/inline/2013/11/3021307-inline-fb-thumbsup-printpackaging.jpg)
Title: Re: The 94 YZ/WR/iT project
Post by: NETRA3 on July 06, 2016, 01:05:29 AM
Wow. great thread....You guy's are geniuses....I'm impressed!!!
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on August 03, 2016, 01:04:54 AM
Still running great with no issues.

[youtube]http://www.youtube.com/watch?v=XIwcmGqIxWQ[/youtube]
Title: Re: The 94 YZ/WR/iT project
Post by: wayne61 on August 03, 2016, 03:01:28 AM
May have mentioned elsewhere, but my DynoTronix CDI ran faultlessly at my last race meeting.
Bike has never ran better  ;D

(http://i1036.photobucket.com/albums/a441/waynecoward61/Mobile%20Uploads/G71_6198_zpsccmdm1dk.jpg~original) (http://s1036.photobucket.com/user/waynecoward61/media/Mobile%20Uploads/G71_6198_zpsccmdm1dk.jpg.html)

(http://i1036.photobucket.com/albums/a441/waynecoward61/Mobile%20Uploads/2016-07-25%2019.13.30_zpshuut2qhj.jpg~original) (http://s1036.photobucket.com/user/waynecoward61/media/Mobile%20Uploads/2016-07-25%2019.13.30_zpshuut2qhj.jpg.html)

Rear suspension however...

Threre's always something to work on.

 ;D
Title: Re: The 94 YZ/WR/iT project
Post by: Martin I Henry on August 03, 2016, 04:44:30 AM

Just worked my way through this topic again !

I particularly like how a problem halted the project, a solution was found and now others are benefitting from the experience !

Great stuff.

Cheers,

Dave R.
Title: Re: The 94 YZ/WR/iT project
Post by: wjmoltz on August 05, 2016, 01:03:06 AM
Just worked my way through this topic again !

I particularly like how a problem halted the project, a solution was found and now others are benefitting from the experience !

Great stuff.

Cheers,

Dave R.
Thanks, Dave.  When I started out repairing Mike's (map351) 250 CDI, I had no idea it would turn into a vintage CDI business.  I'm glad our efforts are starting to benefit others.  I can tell you that a lot of work goes into these developments, so we appreciate the recognition.  :)

BTW, the new CDI-IT-2W6 should be available toward the end of August. 

Best regards,

Bill
Title: Re: The 94 YZ/WR/iT project
Post by: Martin I Henry on August 13, 2016, 09:22:03 PM

I've just taken a deep breath and ordered a DynoTronix CDI !

It's going to be fitted to my Brother's 250J as he needs some help to keep up with Wayne on the track !

I'll have another for my bike (Craig's really !) later in the Year when funds permit.

Cheers,

Dave R.
Title: Re: The 94 YZ/WR/iT project
Post by: wayne61 on August 13, 2016, 09:27:23 PM

It's going to be fitted to my Brother's 250J as he needs some help to keep up with Wayne on the track !


Oh for crying out loud...
Pete needs NO help   ;D

Title: Re: The 94 YZ/WR/iT project
Post by: wjmoltz on August 13, 2016, 10:23:28 PM
I've just taken a deep breath and ordered a DynoTronix CDI !

It's going to be fitted to my Brother's 250J as he needs some help to keep up with Wayne on the track !

I'll have another for my bike (Craig's really !) later in the Year when funds permit.

Cheers,

Dave R.
Thanks for your order, Dave.  I am packing up your CDI now and will get it in the mail today.

Bill
Title: Re: The 94 YZ/WR/iT project
Post by: wayne61 on August 20, 2016, 07:51:58 PM
Bill,
Did you fit the "special rev limiter if Pete is in front of Wayne" like we discussed?
 ;D
Title: Re: The 94 YZ/WR/iT project
Post by: wjmoltz on August 20, 2016, 10:52:21 PM
Bill,
Did you fit the "special rev limiter if Pete is in front of Wayne" like we discussed?
 ;D
Yes, there is a special proximity circuit that won't let him pass you.  However, it is highly experimental, so there is no guarantee. ;D

Bill
Title: Re: The 94 YZ/WR/iT project
Post by: Martin I Henry on August 21, 2016, 04:45:42 AM

Quote

Did you fit the "special rev limiter if Pete is in front of Wayne" like we discussed?

A short burst of Gamma radiation never hurt anyone !

..................Here it is:

(http://i208.photobucket.com/albums/bb117/577450martinihenry/Forum%20Photos%202016/20160820_163629_zps1udijizw.jpg)

Well packaged and super fast shipping ! Thanks Bill.

Cheers,

Dave R.
Title: Re: The 94 YZ/WR/iT project
Post by: wayne61 on August 21, 2016, 05:55:46 AM
Research

http://m.wikihow.com/Build-an-EMP-Generator

My CDI came with the optional Faraday cage.

Thanks Bill, you're a star  ;D
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on August 21, 2016, 07:34:50 AM
Bill just left with a new project! :D
Title: Re: The 94 YZ/WR/iT project
Post by: wjmoltz on August 21, 2016, 09:29:36 AM
Okay, so now I have two new projects.  I just left Mike's and I have a 3R5 CDI and a 23X CDI. 

These two CDIs will cover a lot of bikes. 
You guys probably already know this, but here are the models these CDIs cover.

The 3R5 covers:
1980 YZ465G
1981 IT465H
1981 YZ465H
1982 IT465J
1982 YZ490J

The 23X covers:
1983 IT250K
1983 YZ490K
1984 IT200L
1984 YZ490L
1985 IT200N
1985 YZ490N
1986 IT200S
1986 YZ490S
1987 YZ490T
1988 YZ490U
1989 YZ490W
1990 YZ490A
1992 WR500ZD
1993 WR500ZE

I hope to have the 3R5 ready around mid October and the 23X around late November.

I'll probably start a separate thread for each of these CDIs, or maybe just one that covers both developments.

Regards,

Bill


Title: Re: The 94 YZ/WR/iT project
Post by: Bigshorts on August 21, 2016, 12:52:49 PM
Brilliant well done
Title: Re: The 94 YZ/WR/iT project
Post by: 2fITy.J on August 21, 2016, 01:04:02 PM
I hope to have the 3R5 ready around mid October



My hand is up.....  ;D ;D ;D
Title: Re: The 94 YZ/WR/iT project
Post by: paul-66 on August 21, 2016, 03:34:09 PM
Quote
the 23X around late November



Sweet!!!   8)
Title: Re: The 94 YZ/WR/iT project
Post by: 2fITy.J on August 21, 2016, 04:06:02 PM
I have it on good authority that it is more like "Suhh-weeeeet"......  ;)
Title: Re: The 94 YZ/WR/iT project
Post by: harko on August 21, 2016, 04:57:51 PM
Great stuff Bill, i'll take a 3R5 when ready. Just in case someone starts a line.

Harko
Title: Re: The 94 YZ/WR/iT project
Post by: 2fITy.J on August 21, 2016, 05:29:24 PM
Behind me Harkster.......  :D :D :D :D :D
Title: Re: The 94 YZ/WR/iT project
Post by: Martin I Henry on August 21, 2016, 06:05:27 PM

Quote

I'll probably start a separate thread for each of these CDIs, or maybe just one that covers both developments.

It would be better to have two different threads.

I'm interested in a 3R5 item.

Cheers,

Dave R.
Title: Re: The 94 YZ/WR/iT project
Post by: harko on August 21, 2016, 06:51:13 PM
Just so long as I'm in the line somewhere.

Harkster ;)
Title: Re: The 94 YZ/WR/iT project
Post by: wjmoltz on August 21, 2016, 10:37:01 PM
No problem, I'll run two threads for the new developments.

Anyone know any out of work elves?  I think I'm going to need some help. :D

I've had some inquires about buying two or more CDIs, so I wanted to talk about shipping costs.  If someone wants to buy more than one CDI, please email me first so I can try to minimize those costs.  My website is not setup for e-commerce, and I'm not the best at this website stuff.  Anyway, if you click "Buy Now" on two different CDIs, PayPal will want to charge you shipping for each item, and we can't have that.  So until my website gets more sophisticated, please e-mail me first when buying more than two items so I can try and save you guys some money. 

Oh, one more thing.  For you guys that live close to each other.  If you ever want to combine your orders to save on shipping, just let me know and we'll make it happen.  You guys can work out the financial  issues between yourselves.

Best regards,

Bill
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on September 30, 2016, 10:16:03 PM
Still running great with Bill's CDI!

http://www.facebook.com/100007593167781/videos/pcb.1735933203336435/1735926230003799/?type=3&theater

http://www.facebook.com/100007593167781/videos/pcb.1735933203336435/1735926393337116/?type=3&theater
Title: Re: The 94 YZ/WR/iT project
Post by: fred99999au on October 01, 2016, 09:37:50 AM
Cant see either of those.
Title: Re: The 94 YZ/WR/iT project
Post by: map351 on October 01, 2016, 11:33:11 AM
Mike loaded them on Facebook I'll move them to You Tube.

Mike