Thanks bros.
i have no rubbing as i have not run it yet with new o ring chain yet.
What is this o ring behind the sprocket you are talking about?
The bike does not come with a spacer or o-ring.
I understand Cam, and this is what i will do if it rubs, but I do not understand what o-ring the rest of you are talking about---you do not need and o ring if you are also using a spacer??
Unless you mean steel o ring? which is a spacer, then you mean 2 spacers.
JT sprockets says some sprockets are made offset, so you can flip them over to space the chain away from motor.
If you explain o ring and it works in conjunction with metal spacer, where do you get o ring and what is it made of (why do you use rubber o-ring for spacer), and where do you get spacer, and what is it made of/rubber?, and i assume you mill sprocket like in Cams nice pic??
I guess after one ride i will remove chain to see if it rubbing or not, but I suspect the 15 tooth will keep it off case.
thanks