Terry,
I don't remember who manufactured the flywheels I've seen fail and I don't
necessarily thaink of any party as producing bad ones. I would attribute most
of the failures to improper instalation, such as using incorrect bolts and or
reusing the same too many times, soft washers or lock tabs or no washers at
all. I remember recently seing several flywheels together that had a very
small bolt circle that may have failed due to just not enough metal around the
bolt pattern area.
Roger
>>> "Grd4Spd Racing" <TerrySaltzman@home.com> 10/09/01 09:53PM >>>
hello,
interesting topic, as i sell Fidanza aluminum FWs (engineered by GTJ) and
ACT/Clutch Masters clutch kits to the Toyota MR2 community (i own a 91
turbo).
GTJ-
http://www.gtjaguar.com/
Fidanza-
http://www.aluminumflywheels.com/
roger, what mfg of alumin FWs have had center failure issues that you cite?
what FW and clutch combo was Dick Naze running?
regards,
terry
Grd4Spd Racing
"A High Performance Company"
Grd4SpdRacing@yahoo.com
Tel. 619.741.4881
San Diego, CA
> -----Original Message-----
> From: owner-vintage-race@autox.team.net
> [mailto:owner-vintage-race@autox.team.net]On Behalf Of Roger Sieling
> Sent: Wednesday, October 10, 2001 4:46 AM
> To: malcox@attglobal.net; vintage-race@autox.team.net
> Subject: Re: IRP incident
>
>
> 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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