Malcolm,
Most stock flywheels are NOT steel, but are some grade of iron. Steel race
flywheels are very good and can be made very light. Do NOT try to do the same
lightening operations on your stock one. Biggest problem I've seen w/ aluminum
flywheels has been a tendency to break out the mounting bolt pattern in the
center. People tend to not use proper hardened washers under bolt heads to
spread the loads.
Roger
>>> "MalcolmCox" <malcox@attglobal.net> 10/09/01 11:27PM >>>
Several flywheel explosions have been reported over the last year or so.
I am curious to know if these were modified/stock steel flywheels, or
aluminum.
I imagine an aluminum flywheel would shed a lot less energy than steel, but is
more difficult to
crack test since you have to use a dye method.
If steel, have any debris shown fatigue crack creep such as would be detected
by annual magnaflux?
Malcolm
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