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Old 09-04-2005, 07:26 PM   #1
Fredrick_NP
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How fat is the guy testing 0-60 MPH?

Is he like average weight?.... I noticed my moms Pontiac vibe drives much differently even when just 1 extra person is sitting in it...

So would the fact that im only 110 lbs (shut up...) help my car get a better 0-60?... even if its fractional. Like 0.1 seconds or 0.08 seconds.
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Old 09-04-2005, 07:53 PM   #2
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Re: How fat is the guy testing 0-60 MPH?

110 ? you skinny, im 16 an 5'9" an im 137...
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Old 09-04-2005, 08:10 PM   #3
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Im 16 and 6'9 too... heh heh. Doh!
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Old 09-05-2005, 12:38 AM   #4
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Re: How fat is the guy testing 0-60 MPH?

you must be well skinny, im not fat or anything, like waist 30"...
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Old 09-05-2005, 01:07 AM   #5
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Re: How fat is the guy testing 0-60 MPH?

The rule of thumb drag racers use is 100 pounds equals a tenth of a second in the quarter mile. Just another reason to stay in shape!
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Old 09-05-2005, 01:13 AM   #6
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eh. any car that you drive would be slightly faster yes. but very little. but i can agree that when, say, my mom is in my car, it is painfully slow. add the fact that she HAS to run the AC on 5 all the time and..yeah.
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Old 09-05-2005, 04:27 PM   #7
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Re: How fat is the guy testing 0-60 MPH?

i heard or read somewhere that 100 lbs is worth about 15hp. not sure if this is true and if it is im sure 100lbs for a 2000lb car is different than 100lbs for a 3000lb car. if anyone can confirm or deny this that would be great.
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Old 09-05-2005, 07:35 PM   #8
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Re: Re: How fat is the guy testing 0-60 MPH?

Quote:
Originally Posted by Reed
i heard or read somewhere that 100 lbs is worth about 15hp. not sure if this is true and if it is im sure 100lbs for a 2000lb car is different than 100lbs for a 3000lb car. if anyone can confirm or deny this that would be great.
Well it's not a straight line formula, and there are several published formula for determining this. So here are a couple:

Per Super Chevy Mag's formula :
A 2000 lb car with a trap speed of 100 in the 1/4 mile would require 155 hp.
A 2100 lb car with a trap speed of 100 in the 1/4 mile would require 162 hp.

Same exercise with a 3000 lb car = 232 hp
again, with a 3100 lb car = 239 hp.

There are several other estimates and formulae, but this one is close. BTW, This assumes wheel HP.

So your estimate isn't correct for a 1/4 mile run, but I suspect it would be close on a road circuit course of maybe 1.5 miles.

Jim
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