Re: Burnouts????

From: Cale Henry Bargen (vencomatic@ameritech.net)
Date: Thu Nov 11 1999 - 17:14:56 EST


Ummm....this is all good except for the part about Detroit including
overdrive as a warrantee program cost reducer. I'm pretty sure that this
feature was included on a fuel saving basis due to the lowering of
engine RPM on the highway. Also, I'll bet their warrantee costs went up
when the first OD's exploded whe guys were towing trailers, or cops
leaving the trans in OD when chasing people. I KNOW lots of cops' OD
blew up. Just my $0.02 - the rest of your points are right on the
money.
Cale

Robert France wrote:
>
> RE: BURNOUTS
>
> The clutch is a sort of sacrifical component in the vehicle which is
> designed to wear, the transmission is not really designed to wear:
>
> #1 "Burn-outs" are extremely hard on driveleine components
>
> #2 First gear provides the highest torque multiplication
>
> #3 The higher the torque multiplication, the higher the stresses on the
> internal individual components (this is why Detroit went with overdrive
> trannys; they tend to overspeed the driveshaft but pass the load to the
> rear axle, which is a less expensive part to warranty)
>
> #4 Static coefficients of friction are always higher than dynamic
> coefficients of friction for any material; once the tire is spinning, the
> load is much lower than when it is stationary
>
> So in the end, you are much more likely to fry the clutch if you try to
> burn-out in 2nd gear, but if you have enough torque to overcome the static
> load of the tires, this would be better than using 1st gear, therby asking
> the transmission to try to multiply your initial lack of torque to a high
> enough value to break the tires free, damaging the transmission while
> trying...its your clutch, and its your transmission, and, in the end, its
> your wallet.
>
> >OUCH!!!!! I thought 1st gear was bad enough on your clutch wont doing it in
> >second really pound the hell out of it or is there no difference?????
>
> > Yeah use second gear for burn outs



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