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  1. J

    Tongsheng crank wobble - can I use Loctite?

    Hi Just to update this thread: Reduced the chain ring wobble by fitting a new sprag clutch. There's still a small amount of lateral play, but much better and not scuffing on casing. Reduced the pedal / crank wobble as follows: At the drive end of the spindle: I was able to slide a piece of...
  2. J

    Tongsheng crank wobble - can I use Loctite?

    Thanks for the replies. So is Loctite a definite 'NO' ? Is this because of concerns about getting the crank spindle apart in the future? I've read that heat, from an electric heat gun, is enough to soften loctite for tear-down. Would that amount of heat risk damage to the torque sensor? Or...
  3. J

    Tongsheng crank wobble - can I use Loctite?

    Hi Darkerside, Yes, exact same amount of movement as your youtube video. I'm 99% sure it is caused by a loose sprag clutch bearing. There was noticeable lateral play in mine. I bought a new CSK-30P bearing from here: www.kugellager-panta.de. Cost about £25 delivered. Bearing feels much...
  4. J

    Tongsheng crank wobble - can I use Loctite?

    Thanks Casainho. I can see how that might reduce the play in the crank left to right, but not up/down, nor the chain wheel wobble. I'll definitely be trying the firmware update, so long as I can keep the thing running reliably :thumb:
  5. J

    Tongsheng crank wobble - can I use Loctite?

    Hi After 3 weeks of use and 350 miles, I've noticed a couple of worrying issues with my Tongsheng mid-motor: 1) The chain ring wobbles +/- 1mm, enough for it to catch on the motor housing and make a scuffing sound 2) The pedals wobble +/- 1mm in/out/up/down Neither are caused by loose motor...
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