Lighter wheels = any E.T reduction?

[Steve Polhill]

Originally Posted by Bob Mulry

The further away from the centerline of rotation the greater benefit of rotating weight reduction..

Remove 1 pound of rotating weight from the OD of the flywheel vs. a 1 pound reduction from gun drilled axles.....

It's called moment of inertia.

Just sayin'

I was just about to say exactly that. The further away from the center of rotation the greater the benefit. Easy way of testing this is to hold a ten pound weight in your hand , and then put that same weight at the end of a 1 foot rod, grab the opposite end of the rod and try to hold it up.