[DMCForum] Re: Challenging Martin to a "Tractor Pull" at Pigeon Forge [OT]

["content22207" <brobertson@xxxxxxxxxxxx>]

OK Martin, can I challenge you to an automotive "tractor pull" at
Pigeon Forge? I'll bring one of the Lincolns. What are you bringing?

Bill Robertson
#5939

>--- In DMCForum@xxxxxxxxxxxxxxx, Martin Gutkowski <webmaster@xxxx> wrote:
> 
> 
> content22207 wrote:
> 
> >Horsepower is calculated from 2 numbers: Torque and RPM's. An engine
> >that "only" produces a couple hundred HP, but does so at low RPM's, is
> >MUCH more powerful than an engine rated even higher at high RPM's.
> >
> 
> No it isn't, it just has more torque at low rpms. In the case of 
> diesels, they can't rev as high as a petrol equivalent. If you had the 
> right gearbox that geared a sportscar engine down to make use of the 
> torque available at top end for pulling rather than accelleration,
you'd 
> realise the sportscar engine is tranferring more energy.
> 
> My education taught me to be specific with my terminology. Power is
rate 
> of transfer of energy. Energy cannot be created or destroyed. Power is 
> torque times speed, and you are limited purely by the amount of
chemical 
> energy available to you by burning fuel, so for a given amount of fuel, 
> you can have either torque or speed. That "given amount of fuel" in
this 
> case can be considered as the size of the engine.
> 
> Martin

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