Analyzer on this site, flywheel or RW HP figures?

Jeff Chambers · 11-23-2005, 08:31 AM

See I would have said RWHP. The equations of motion don't know anything about the internal losses, just what it takes to accelerate a given mass over a fixed distance...that would mean the power required at the ground. Its assuming a linear or constant rate of acceleration too, which is far from reality. Its such a simple calcuation, that it doesn't take in to account other variables such as aerodynamic drag, rolling friction, etc. I'll have to dig out my old physics and mechanics books and see if I can verify the numbers.

~The Jester~ · 11-23-2005, 09:25 AM

I'm going with Jeff on this one. RWHP. Simple equation, it takes "X" amount of horespower to move "Y" amount of weight at "Z" speed in 1320 feet. Moroso's slide rule has it on there, and it states RWHP on it, so I think the analyzer uses the same formula.

It's useful to "ballpark" your horsepower, and when at the track I always tune to my MPH instead of my ET.

11-23-2005, 08:31 AM	#1
Jeff Chambers Moderator Join Date: Aug 2000 Location: Milan, OH Posts: 2,699	Re: Analyzer on this site, flywheel or RW HP figures? See I would have said RWHP. The equations of motion don't know anything about the internal losses, just what it takes to accelerate a given mass over a fixed distance...that would mean the power required at the ground. Its assuming a linear or constant rate of acceleration too, which is far from reality. Its such a simple calcuation, that it doesn't take in to account other variables such as aerodynamic drag, rolling friction, etc. I'll have to dig out my old physics and mechanics books and see if I can verify the numbers. __________________ Jeff Chambers 1990 Mustang GT 10.032 Seconds / 137.5 MPH 14-time Street Warrior World Record Setter CRT Performance 2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH 2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2 "There's nothing boring about a small block automatic shifting gears at 9400 rpm!"

11-23-2005, 09:25 AM	#2
~The Jester~ Rat Killer Join Date: Aug 2002 Location: Cold ass Ohio Posts: 1,143	Re: Analyzer on this site, flywheel or RW HP figures? I'm going with Jeff on this one. RWHP. Simple equation, it takes "X" amount of horespower to move "Y" amount of weight at "Z" speed in 1320 feet. Moroso's slide rule has it on there, and it states RWHP on it, so I think the analyzer uses the same formula. It's useful to "ballpark" your horsepower, and when at the track I always tune to my MPH instead of my ET. __________________ d-Con Racing "Nothing fancy, just 347 inches of RAT POISON!" MICE need not apply.....

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