Light weight flywheel - good idea?

[mylesdw]

Originally Posted by DavidNJ

The problem with the lightweight stuff comes when moving from rest and light throttle, low engine speed stuff. The inertia keeps it from stalling. With low inertia, you need more finesse on the throttle and clutch.

A 'quick' calculation shows that lightening the flywheel should have little effect on moving from rest. If you went from a 40lb to a 20lb flywheel you would need to raise your rpm by just 100rpm when moving from rest to have exactly the same energy stored in the rotating assembly. I doubt whether one would notice the difference.