Quote:
Originally Posted by ChadG
I was just thinking back of the envelope calculations where 1 pound of unsprung rotational mass = 10 pounds weight reduction. (If someone has a better number please chime in)
The 18" TSW and Forgestar F14's are about 18.5 pounds a piece, which is a 14.4 lb weight savings per wheel. So a total of 57.6 pounds of unsprung rotational mass (assuming you go with the same tires) would be worth ~570 lbs of weight loss? That seems unreal, but if that number is correct you'd definitely feel it I would think.
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I just read recently, that the 1lb of rotating mass equalling 10lbs of sprung mass is not the norm. Possible yes, but not the norm. I can't remember the explaination given unfortunently.
In our case, its probably on the low end, and so losing 57lbs of unsprung weight is probably more like 2 - 4 times that amount in sprung weight, so 100 - 200 lbs I'd guess.
Even so, that is a FANTASTIC weight loss to unsprung weight. I'd be extremely happy.