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Registered
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
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FWIW,...I've used Tilton aluminum flywheels on 6-bolt cranks for 34+ years and some of these things revved beyond 8K.
It certainly changed the MOI of the rotating assembly and raised the RPM that shook the bolts loose, but never failed.
Still have one in my street car that has been in service quite successfully since 1979. Too bad they no longer make them. I cannot say how the Fidanza ones hold up over the long term, but I would certainly have any used one Zyglow'ed before use.
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