I think I found my vibration problem

trudysduster said

vibration fixed. Found tail shaft was 5* down and pinion was 3* down also. Tried to raise tail shaft up to 0* but was hitting the floor. So I raised the pinion angle up to 5* to be parallel and it took care of the problem.

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hey i've been reading this though , and you said that the vibration got better '' as in went away '' at higher rpm , well was it floored . had a partner ''help with a 440 once '' , he under cut the counter weights on the crank , quote '' to make it rev'' he said . it did , but it vibrated like crazy , untill you floor it . it would run up to max r's , with no issues . just putting it out there . did the guy have a lath ?