I have a set of aluminum flywheels that came off my 572's if anyone in interested.....make me an offer.

Thanks for all the info - please keep it coming. I have a general idea about the aluminum fly wheels seeing that I had an aluminum fly wheel on a road race corvette, rev's real fast like an outlaw sprint car. LT

We use an aluminum flywheel in flat water water races, and a heavy steel flywheel in big water races. The aluminum will rev up much faster, and the heavy steel helps keep the rpms up high when on and off the throttle in big water.

Trade you a case of beer for each when you get back from Destin. I want to try one on my Magnum.

You know I don't drink beer.......bottle of crown and their yours.

Oh yeah.

I'll buy the bottle tomorrow, but I can't guarantee that it will still be full when you get back.

Thanks for the info !

It would be much appreciated if you would expound on your findings relative to using the steel flywheel,including weight and material.

Thanks !

I would think that if your prop left the water with a steel flywheel and the rpm picked up over that which you needed to match re-entry prop speed you would cause increased stress in the driveline as the flywheel attempts to keep up speed and the prop tries to slow the driveline down, twisting all the bits inbetween until everything evened out again.

In this case it would seem that having the lowest possible mass in the system would result in less driveline stress when the prop wants to adjust speed quickly.

But what do I know.

I simply like the AL material because it gets weight out of the boat.

One could ask if the AL flywheel might allow the prop to slow enough to create increased stern drag,on re-entry. In fact,subject to variables,which flywheel might be easiest to stuff ?

In a race application yes, I wouldn't use one on a pleasure boat. If you come out of the water a lot where and how you boat they can (not will but can) lead to bearing issues due to the way the engine will accelerate and decelerate.