[Spridgets] Racer type button question..
jdc6 at Lehigh.EDU
Fri Sep 26 08:07:36 MDT 2008
> Ok, how does that measure up to exhaust gas temps? ie how would an
> 800F exhaust temp compare to the 400F cylinder temp? Or would that
> simply melt the plastic?
> On Sep 26, 2008, at 8:50 AM, John Caffrey wrote:
>> Lester wrote:
>>> Morning all,
>>> do any of you know the temp range for the plastic buttons being
>>> used to keep the wristpin in the piston? and where they are sold?
>> Can't tell you where to buy them, I made my own buttons from teflon
>> rod. The upper temperature range for virgin teflon is at least 400F.
>> Don't use glass-filled teflon, too abrasive.
>> Fogelsville, PA
Yes it would melt. It decomposes to a toxic gas around 450-500F. Never
thought about a two stroke application, and don't know of any plastics
that can operate there.
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