:henko:Originally posted by tiba_karotsu
now my old cilinder is an expensive paper weight.LOL
Originally posted by Speed
No, our Metrakit Pro Race motor is a tuned 70cc motor with a 28 Kehlin Carburetor & Hebo Clutch System.
Our 90cc motor, we took a Malossi MHR Team Cylinder Kit and bored out the cylinder block (the cylinder sleeve is much thicker than most cylinders) to 52mm & re-niksail plated it back. You have to stroke it as well to get up to 89cc. We used a Wisco piston from a 80cc motorcross bike.
Our race rules have changed now. I am now the Vise Presedent of our club and I changed the rule to 70cc with a 19mm. carburetor. With these big motors, racing was not FUN any more. Not everyone can aford to maintain motors like this for a whole season. In track racing, everyone must have the same thing. May the best cheater win. Ha! Ha!
In some races we lap riders (3) times with these motors. And it is ALL on video tape.
Added Speed
Originally posted by Speed
Please show me the formula & calculations that you are using.
Added Speed
Originally posted by Speed
The bore is now 52mm, but the piston is 51mm or 51.80 (080.00), oversize Wisco Piston.
Yesss, technically we would say stroke x bore, but legally we will would measure the piston dia.
When we first get the cylinders I have to use a 51mm piston, but after wear you have to step up the piston sizes. In Europe you use A, B,C, D......
Didn't I say, may the best cheater WIN!
Added Speed