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johnneilson · 02-16-2021, 12:28 PM

To Pete's point, lightened stock flywheels are verboten in SCTA competition.

I have been looking at some of the "lightened" flywheels and noticed that some have material removed from a inside. While this will reduce the weight, it does not address the MOI calculation.

I have been working on some FEA analysis of this and the hub strength. Preliminary MOI shows that there can be as much as 35% reduction in MOI by removing weight off of the OD vs the ID. This in itself will reduce the amount of hub stress too.

Still a ton of work to do on this, computer time is limited, J

02-16-2021, 12:28 PM	#34
johnneilson Senior Member Join Date: Jun 2010 Location: 34.22 N 118.36 W Posts: 1,057	Re: Lightened Flywheel? To Pete's point, lightened stock flywheels are verboten in SCTA competition. I have been looking at some of the "lightened" flywheels and noticed that some have material removed from a inside. While this will reduce the weight, it does not address the MOI calculation. I have been working on some FEA analysis of this and the hub strength. Preliminary MOI shows that there can be as much as 35% reduction in MOI by removing weight off of the OD vs the ID. This in itself will reduce the amount of hub stress too. Still a ton of work to do on this, computer time is limited, J __________________ As Carroll Smith wrote; All Failures are Human in Origin. Last edited by johnneilson; 02-16-2021 at 12:29 PM. Reason: correction