Properly measuring crank bobweight?
#1
Properly measuring crank bobweight?
After looking at stroker cranks I finally found out about "Crank Bobweight". To correctly balance a rotaiting assembly. The Bobweight of a crank is determined by 50% Reciprocating Mass and 100% Rotaiting weight. Which is determined by the weight of the pistons, rings, and rods. Then the machinest will drill out the holes in the crank determined by the balancing machine.
#5
And then the rotaiting assembly gets balanced together with the hub, front balancer, and flywheel. Which in my case is an Aluminum Mcleod with removable weight. I would have used my original steel flywheel and had it resurfaced but I was told switching to aluminum is like putting a seventy-five shot of nitrous on it. It does have a steel clutch surface which looks well made reinforced with rivots and such. I think with the added rotaiting mass of a forged 3.75 crank, six hundred gram forged 5.7 I beam rods, and Wiseco forged -5cc Flat Top pistons I will have enough to make up for the flywheel weight loss.
Last edited by CraZ28; 02-11-2010 at 12:32 PM.
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