who makes the lightest flywheel for the fd

 

I don't know, but be careful when comparing weight quotes.

The Racing Beat aluminum flywheel is 8.2 lbs, but is quoted at 12.5, which includes the counterweight.

There are a number of "9 lb" flywheels that I suspect are quotes that DO NOT include the counterweight. I'm not sure, but it seems unlikely that you could make an aluminum flywheel that weighed 9 lbs with the counterweight and was strong enough to function.

That said, I would expect the Racing Beat and other aluminum flywheels to be close enough that weight probably isn't a big factor in deciding which one to get.

-Max

 

Rotary Performance has a Chromoly 9 LB. I'm not a fan of aluminum flywheels.

I've had press in dowels fling out of one at high RPMs (SRmotorsports 11LB), the racing beat Al FW uses bolt & nuts instead of threading into the FW (good idea for aluminum, but makes a PITA if the TO Brng gets stuck)

 

One thing to consider is where the weight is placed. Weight near the center of the flywheel for the same weight flywheel will spin up quicker.