Hello all
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@mcludd Yes, this bike seems to have been butchered around. That stator is not for that type of ignition system.
I cannot comment on whether "it'll work" or not, however as you've pointed out, it's not the correct CDI for the year and these things can be difficult to diagnose when it is all a mishmash and without official Yamaha knowledge.
What I have done in the past is swapped out the entire ignition system to match compatibility. I ran an earlier engine, swapped out the crank/flywheel and stator together to use a newer ignition system. Since that means splitting the cases, it's involved, that's okay I was rebuilding the engine, had the cases already split deciding what to do. It involved plenty of research before hand chatting to @scrimsmustang to understand the picture.
If it were me, I'd be looking to restore the original CDI, or better still get an Ignitech or Zeeltronic as the CDIs I've linked you to can be terribly restrictive.
One of those CDIs should be the one you need, I don't know for certain you'll have to do some digging around.
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There is a place in France (ask hotshot) that sells a conical ‘shim’ that fits over a non RE crank that will make it accept the back to front rotor. All you’d need then is an ally side casing (which I have a spare) and an RE stator & rotor …
That should make it plug and play again!…
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What did the bike cost?…
When you’ve hosted a pic at Imgur, or whatever. At the top of your post, on the tool bar, there is an oblong that looks like a picture frame with 2 mountains and a star (between the 2 chain links and the smiley face) Tap that then paste in the ‘copy link’ from Imgur. It will show your pics…
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)By jingo I think I have got it!!
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Before my time 🫤 RD 250?…
Edit: 200?
I met a bloke who put an RD 200 twin engine in a dtr125 frame! He was trying to make a 2>1 exhaust the last time I saw him. I didn’t know about 2T expansion chambers at the time! I’ll have to stop by and see what’s what next time the weathers good and I feel any kinda sociable…
I decided to concentrate on my other project today, feeling a bit fed up with the water cooled ungrateful Yamaha