Re: Lightweight Axles
The actual engineering term everyone is talking around is "effective mass". Effective mass is the combination of rotating and non-rotating mass on a vehicle and in the case being discussed here is what effect does it have on accelerating a vehicle.
I think the general rule of thumb is multiply the vehicle mass by 1.1 to get a ROUGH idea of the actual effective mass.
The catch is actual effective mass changes with transmission and rear end gearing. The effective mass in first gear is roughly 1.25 x's weight and 1.15 x's weight in second gear for appoximation purposes.
I'll post more latter about the what are the big hitters for effective mass later.
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