[DAVID GAGNARD]

I think steel is more durable in the long run and you can certainly have a steel flywheel lightened a lot. In our old dirt track car we were not allowed to run aluminum flywheels,but played around with a couple of old steel ones and had one lightened to within a few pounds of an aluminum and ran it for two seasons with no problems,no cracking or anything else. I never thought it would last it was so thin,thought it would crack soon,but help up well under 6,000 rpms all nite racing for two years till we went with a different flywheel,clutch setup.......

David