Lightened Flywheels

[Stuart Giles]

Unlike most modern cars, the A7 flywheel is steel rather than cast iron, it's a pretty tough steel at that, as anyone who has machined one will be able to confirm. I can't imagine one letting go unless something quite reckless has been done in terms of lightening it. I have done the "pillaring" of the flywheel rim on road car motors as per Simon's in the post above and they have still been perfectly driveable afterwards. Lightening what is quite a heavy flywheel setup not only makes the motor more responsive, it also gives the crankshaft an easier time.