Quote:
Originally Posted by alamantia
I calculated the mass density of a pin made out of AISI D2 Tool Steel 2.000" in length, with and OD of 0.792 and an ID of 0.707 (0.085" wall thickness) and used 0.278 in/lbs3 as mass density factor and came up with 25.3 grams each, again these are 2" long pieces.
http://www.matweb.com/search/datashe...d=16009&ckck=1 |
you are in the ball park on the pin but the ones i found were not high end tool steel like you speced and i have a 10 gram weight difference each piston in my balance sooo as it ends up being 1 balance factor % difference ( heaver ) than it should be knowing a harley motor is not 50% like a chevy ( the V is 45* and the rods are on one crank pin inside one another ) its 60% for a stock motor and we use #s like 57 / 58 % percent for sustained high RPM motors so the top rpm is smooth instead of being right on the balance its backed up about 500 RPMs - its already done and picked up - i just want to say thanks to all who came to my aid -- jz