that is kind of weird you got a off set keyway with a billet flywheel. unless you have one of the old ones. need to check your flywheel and see if it is engrave with 32 degrees on it. if so do not use that off set keyway. pull your stock keyway out of your engine and use that one and don't forget to lap your flywheel to your crank with little valve lapping compound. that is a must to do...
Some damn good info in here! Way to go folks! I think Tom is setting up a younger guy 14 years old, to run one of his bikes in
this upcoming event.
Thank you all. This is the info I was looking for. In the many OldMiniBikes threads and You Tube videos that I've looked at, there is almost nothing said about offset keys. The ARC flywheel is engraved to say 32º advance. It came from OldMiniBikes w/the offset key included but no info on when you'd want to use it. I'll stay w/the stock key for now.
The local indoor flat track is having a big event on Feb. 8/9, and there will be a class for pull-start mini bikes. There is only one rule, it must be pull-start. Because there is normally almost no minibike racing in this area and none at this track, it will be a fresh start for everyone. My plan for success is to put a fast, light rider on the bike and give him the benefit of total throttle control via governor removal w/billet flywheel for safety. The stage I kit was just a little icing on the cake. I'm not motivated right now to dig deeper w/billet connecting rod, cam, springs, porting, etc.
The track is big for an indoor circuit, wide, and banked at each end. They also race cage carts and dwarf cars here. 220 yards? Maybe, but most likely a bit smaller than that. I have 12/60 gearing and 6" wheels.
The young man whom I've engaged to ride it is no beginner. He's very experienced and really fast on 85cc and 250cc flat track bikes.
The races will be televised live nationwide on fanschoice.tv on Saturday, Feb. 9, 6-9 pm, PST.
fanschoice.tv