My buddy Brought his Honda CT70 over and we got it running and decided to race it against my mini bike. By the end of the block I was half a block ahead and my chain came off. Having a clutch band brake I had to take the corner way faster than I was comfortable with and roll to a stop. I decided right then that it wasn't going to happen like that again. Oh my chain may come off again but I'll have a front brake next time. So I took a tri star sprocket mount and made a spacer for a disc rotor. It came out pretty good and I made a spacer to go between the wheel bearings so I can tighten the front axle. Just need to make a caliper mount and weld it onto the fork leg. The wheel is crooked by about .040'' and I will probably have to shim the rotor straight. I checked the rear wheel only to find it has runout also. No wonder my chain came off. I guess the quality control on these wheels is not that good.