Re: [DMCForum] Re: Continued: Martin's HP (Jim S)

[Jim Strickland <ihaveanaccount@xxxxxxxx>]

On Tue, 27 Jul 2004 02:58:17 -0000 "content22207"
<brobertson@xxxxxxxxxxxx> writes:
> As ever, the soul of tact... (Did I say *WOMEN* 2 years into the
> workforce were overgrown *GIRLS*...).

yes.

> Stick with it -- some day you'll master this decorum thing.

what?

> Your total misunderstanding of "horsepower" shows not only a lack of
> historical knowledge, but the same gullable streak that marketers 
> target. 

Yes, and they are all out to get you, Bill.  Watch out here comes one!
 
> Follow me here: a small displacement engine produces very little
> torque. Don't blame me -- I didn't invent physics. The only way to
> marginally compensate is to spin the crankshaft at a tremendous 
> speed.
> Hence your 6,000 RPM example.

Huh?  but spinning faster is what gives it more torque!  That was the way
it was designed!

> Your example engine is generating little more than noise until it
> rev's up there. And if it is unable to rev up there, it may as well
> not be running at all!

My car goes to it's redline, does yours?

> Thus, if your example engine (and a real world transmission -- not
> Martin's imaginary geared one) is attached to a 10,000 lbs load, I
> absolutely 100% guarantee one of these two outcomes will happen:
> 1) The engine will stall when the clutch engages normally
> 2) The clutch (or automatic fluid) will burn up partially engaging 
> to
> avoid stalling the engine

Right, because you need TORQUE to move 10,000lbs from standstill. 
Gearing multiplies torque!
 
> *THAT'S* why you don't see small cars pulling large sized campers,
> UHauls, and boat trailers.
> *THAT'S* why every company that's ever tried to save fuel with 
> smaller
> displacement engines in their heavy service trucks goes back to 
> larger
> ones.
> *THAT'S* why small cars struggle up steep mountain grades (did 
> anyone
> catch the AP translation of a story in the French press marveling 
> that
> Lance Armstrong rode faster up the Alps than a [European] car can
> drive!). 
> *THAT'S* why a transfer tractor producing "only" 350-400 HP can move
> more than 80,000 lbs (40 ton weight limit is government imposed, not
> physics).
> 
> I can go on, but you *SHOULD* have the general idea by now.

Replace all your *THAT'S* with "TORQUE", and you are almost entirely
correct.

Unfortunately, this has (almost) nothing to do with horsepower which you
are constantly raving about!

Jim

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