A job on the lathe! Lightening a Flathead Flywheel.

[Pete]

Originally Posted by Ronnieroadster

I would be very careful about using a lightened cast flywheel without having a steel scatter shield to contain the parts if or when it comes apart. Safety first.
Ronnieroadster

Yes, I was riding in a 32 roadster (no scatter shield) and the driver was going to show me how fast he could button shift. He missed the shift. According to the tatletale the engine freewound to 7400 and the flywheel exploded. We both got shrapnel in the legs. It almost cut the car in half.

Cast iron flywheels and clutches are not allowed in race engines any more.