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Post Info TOPIC: Stator voltage


Newbie

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Stator voltage
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Could someone do me a big favour please?

I'm in a world of pain with replacement stators and 'no spark' issues.

  1. Pop your plug cap off, or have some other way to stop the bike starting.
  2. Disconnect the three-wire connector under the RHS of the tank. The wires come from the stator and are white.
  3. Set your multimeter to AC Voltage.
  4. Hold meter probes in any two of the three connections.
  5. Crank the bike using electric start.

Could you tell me what voltage you see please?
I'm getting about 3.8v which I suspect is too low and my stator winding isn't correct.

 

Background

  • Noticed oil leak from LHS and identified rubber grommet from stator/pickup was the problem.
  • Bought and fitted an after-market stator/pickup, rectifier, and gasket.
  • Wouldn't start -  no spark.
  • Bought workshop manual from @TTRfan.
  • Followed every troubleshooting step in the manual - all within range.
  • Took to terrible bike shop who refitted the original stator with silicon sealant blankstare and new gasket.
  • Oil leaked everywhere.
  • Looked again at the price/availability of an original stator/pickup and almost died.
  • Bought and fitted another after-market stator/pickup with new gasket (assuming first one was just a 'bad one').
  • Doesn't start - no spark.

I'm thinking the after-market stators I'm buying are not wound correctly - hence my request for voltages from someone with a working stator.

Fluster
North Devon, UK



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Super Guru

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Aftermarket stators for ttrs are notoriously useless.
Don't forget to have the multimeter on AC to test stator voltage.
Did the bike run with the old stator? (Ignoring the oil leak for a moment) And what was the reason for the new regulator/rectifier?

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Super Guru

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send your old stator to west country windings for checking if its faulty they will rewind it for you ive used them many times over the years very friendly & cost is ok they will give you honest opinion / quote john

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Super Guru

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Good tip from John for West Country Windings. They should be able to repair damage without doing anything unnecessary like rewinding. If the grommet and wires on your replacement stator look the same as the originals you should be able to swap them yourself though.
Didn't mean to teach granny to suck eggs regarding AC setting on multimeter. Sometimes they give odd readings if misdialled so I wanted to doublecheck despite your first post asking for AC reading.
Not sure what it is with the aftermarket jobs, the windings themselves or the signal pickup, but there have been a few forum members over the years falling victim to this (and, incidentally, Chinese made starter sprag clutches)
Good luck. At least you are in a position where you have a running bike!

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Super Guru

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as simon said west counry windings he must have used them in the past dont buy chineese chinky crap

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Super Guru

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Glad you've got it sorted. Well done!
Thanks for the closure - warns others about the after market stators.

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