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the this ring is a part that I had cut off from a 12V motor starter. I drilled 3 holes and put M10 thread in it. This did a perfect job. M8 might have done it as well.

Tried a hydraulic Press too, that that was scarry. So I didn't finish it. The only remainig option was a ring with 3 pushers like the one showed on the video. Doing so, all pieces came nicely together in a fraction of a second. It worked and I was happy as a kid. Placed the 36 bearings, grease...

Tried it with the Bench Vise and some tooling, but that didn't work well.

Sure, got it from ebike-kit.nl Fitting, so far, is a disaster if you don't have the special tool. They told me it works on a Bench Vise. I tried that but wasn't succesfull. The trick here is that you need to push on 3 point all over the ring. With the Vise you push on 2 points from whih one...

THANK YOU ALL for the given information and advices. I have found an outer ring that I am going to pick up later today. Hopefully it has the same size and fits perfectly. I believe at this point that is the best option for me. The bike is used by an older woman with a handicap and more speed...

thanks for the info. @ trex: Here is a picture of the part in question. @ flecc: I have also added another post for this. @ d8veh: Any other 250 Motor! could be a mini motor from Golden motor then? I think I can have these for less. As for the hall sensors, I do believe the motor has them...

Hi folks, I am trying to help an old lady with her made-in-china eBike. The bike has a TongXin motor and the outer ring is brooken. It is clear to me this is a weak point on this motor. Question: - anyone has / or know, an outer ring for this motor - if I can't get the ring, what is closest...

hi folks, I live in Belgium and have been involved with 2 wheelers for most part of my life. MTB and race for a few decades and sincee new millenium on old classic and sport bikes (restauration). I converted a 50 year oldtimer into ebike last year. Lots of pleasure running over 35 km/hr...