wa 250 engin u all put in them then ?? ye nathan i gt a 17 tooth on the fround and a 58 on the back i can keep it on the back wheel from 1 to 5 hard as fuk wif these supermotos on im geting track tyres soon ;)
ive been by the side of him and it did wheelie like that, he took his left hand off the handle bar so he cant dip the clutch and just twisted the throttle and the wheel came up, 17 tooth with the offroad wheels, when he put supermoto on it, it didnt do it anymore
Truing the crankshaft is locating it on V blocks at either end on the main bearing journals then setting up a dial test indicator on each flywheel half and then rotate by hand to make sure everything is running true. It should all run true within about 0.05mm. Some tuners will also put a pin in the small end and check that it is bored parallel with the crank. All this helps reduce vibration and stress at high RPM. Hope this helps.