I bought the OORacing tuning kit for the ACE 50 https://www.ooracing.com/store/tuning-kit-big-bore-50cc-to-70cc-suitable-for-ace-50cc-bikes.html (22mm carb, ign.box, rear sprocket etc). Now I´ve changed the rear sprocket to the smaller one from OOR, 40T 428 pitch, to get more top speed/lower rev.
The sprocket is much smaller than the original, and now the chain feels to slack. I´ve moved the wheel maximum to the rear, but still too slack. Do I really need to shorten the chain? How can one do that?
The sprocket is much smaller than the original, and now the chain feels to slack. I´ve moved the wheel maximum to the rear, but still too slack. Do I really need to shorten the chain? How can one do that?