RE: Flywheels

["Bergman, Micke" <M.Bergman@domain.elided>]

The flywheel is quite sturdy and if there is damage it is usually on the
shaft where the bearing is.

If the pressure plate is not broken I wouldn't replace that either.

You can machine lumps off the flywheel and revolve it thinner too
(especially the outer edge). 2 - 3 kg is easy and safe from the durability
view.

The reason for the entire heavy assembly is, IMHO, bad engineering.

I think (haven't calculated) that if you make the front flywheel too soft,
you might get resonance problems with the doughnuts. My flywheel is 5 kg and
I didn't get any problem yet.

There are alloy flywheels on the market. They are, however, quite expensive
and you get almost to the same result by machining the original one and save
your money for something you can't do yourself.

- -Micke


Orig. posting:
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This is interesting as I am intending to replace the clutch in my 2.0
75/Milano in the next week or two, and I have the old flywheel/pressure
plate/friction plate left over from last time. This is a great door-stop
and there appears to be no damage to any part other than the friction
plate. SO.. Can I rip lumps off it in the lathe, get it balanced, fit a
new friction plate (thus saving a few quid ($$)) and have a new improved
car?
Is there a reason why the rear flywheel is so big, such as to damp out
shocks to the donuts? Is the front flywheel only there to carry the ring
gear?
Less immediately necessary advice now sought:-
Can I get hold of an alumin(i)um front flywheel, or machine great slices
off the spare one I have? And can I fit it from under the car with the
engine in and the drive shaft out?

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