Hello all
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I had a transit battery jump leaded to it and with the engine running it was showing 12.6v but no increase with revs so I disconnected the transit battery and went back to the deet one alone which was now at 11.7v and again no voltage increase with revs, need to see if there is anything coming out of the alternator phase wires next (I suspect not) if thats the case then the stator is goosed or if there is then the rectifier/reg is done for - will see what tomorrow brings if I have a spare hour
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Making some progress I think, I checked the phase wires from the alternator and got 20v, 30v and zero!!!!!! thats a phase down then, so I took off the rotor (no thread for an extractor but 3 M8 jacking holes, I used one of these and managed to miss the windings gave it a clunk with a hammer and it fell off on the floor. Here's where it gets interesting, instead of a 12 segment plus HT stator there is a 6 segment plus HT also no sign of any burnt windings
[img]https://i.imgur.com/etmh7JU.jpg[/img]Must be a break in continuity between alternator and rectifier then I think so I start to have a dig in the wires and FFS!!!!
[img]https://i.imgur.com/ydrP70S.jpg[/img]So an hour or so later shrink wrappery and solder
[img]https://i.imgur.com/jLWlxqx.jpg[/img]Brilliant all done you might think, well errr not so the diagram shows that there should be a further wire coming from the alternator up to the CDI (green/blue) and I have it making the journey from the multi plug to the CDI but not coming from the alternator - BUGGER!!!!!
[img]https://i.imgur.com/ct10W8V.jpg[/img]
So here's my thoughts, this is an earlier engine (no electric start no sprag clutch no hole in the cases for a starter motor) with an earlier engine which due to the lack of I assume signal wire to the CDI is not compatible with the CDI I have, my options are as far as I can see fit a later model rotor and stator. graft an earlier model CDI (possibly an earlier wiring harness?) Break the bugger and cut my losses
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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!!
