Curious - do you lose 7 pounds each?
Isnt weight lost in the driveline (driveshaft, halfshafts) worth the most in terms of performance over all other weight reduction methods...
Someone know what the "formula" is for every pound out of the driveline vs. other areas of reduction? Unsprung weight etc...
Sort of. The key to picking up performance with reducing weight on anthing that reciprocates is its diameter or moment of axis, (I believe that's the term, one of you physics guys can correct me). Basically, the larger the diameter of the mass, the greater the difference it makes.
I had the formula somewhere, but I can't find it right now. Basically, as an example, removing 6 lbs. from a mass with a 12" radius is worth way more than removing 12 lbs. from a mass with a 6" radius. The only real driveline mod that would provide the most performance gain would be light weight wheels. For something like a halfshaft or driveshaft, there is no gain because they aren't a large enough diameter.
Hell, my car didn't lose any power when I went from an aluminum flywheel to a steel one.