Power to weight calc

[BUTLER, Tom]

If you claim 2.78:1, you will reduce your  (claimed) power to weight
ratio.  Please note that all that needs to be done is to jack up the
rear of your car and count the number of times the driveshaft has to go
around to turn your drive wheels one revolution to determine whether or
not you are a crook.

> -----Original Message-----
> From:	dzorde at geocities.com [SMTP:dzorde at geocities.com]
> Sent:	Friday, February 20, 1998 10:45 AM
> To:	diy_efi at efi332.eng.ohio-state.edu
> Subject:	Power to weight calc
> 
> To all ye faithfull ones out there.
> 
> Need small favour for making my car seem to have a lower power to
> weight
> than it actually has for this years competition, instead of engine
> capacity
> classes they will use power to weight ratio classes.  The calc will be
> based
> on 1/4 mile runs (time, speed ?), diff ratio and final gear ratio,
> weight
> and probably tire size.  Now the only thing that can't be checked is
> diff
> ratio, so the question is, do I need to say that the diff ratio is
> more
> (3.36) or less (2.78) than what I'm actually running (3.08) to reduce
> the
> calculated power to weight ratio ?
> 
> My conclusion is 2.78 (power=torque*rpm), is this correct ?
> 
> Much appreciated
> 
> Dan     dzorde at geocities.com
> (Everyone has their own way of trying to gain an advantage)