[DougD]

Originally Posted by DAVID GAGNARD

BTW: there are steel flywheels out there that are almost down to the aluminum weight for about 60% of the price of an aluminum wheel.......

David

I agree w/David - pick a lighter weight steel version. Instead of deciding between an aluminum and a steel flywheel, decide whether you want a light or a heavy flywheel. There are vast differences between the different brands, from a featherweight 12-15 lbs to 40 or more. You can't just narrow it down to the two materials they're made from. Given the fatigue characteristics of aluminum vs steel, I'd pick a lightweight steel one every time over an aluminum one. Ask your builder what the weights are for the brands and materials you're considering.