weight+horsepower= e.t?

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Jan 12, 2009 | 06:01 PM

jomomma

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From: surry, va

weight+horsepower= e.t?

im just trying to get a ballpark figure of what kind of rwhp it will take to produce a low 10sec or high 9sec pass with a weight of 4050lb(driver included). thanks in advance!

Jan 12, 2009 | 06:30 PM

mikef85

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Google brought this up.

http://robrobinette.com/et.htm

Jan 12, 2009 | 08:32 PM

jomomma

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From: surry, va

thanks, it looks like ive got some work to do to make that kind of time!

Jan 12, 2009 | 09:46 PM

Sicko

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sweet, that's a fun little toy!

Jan 13, 2009 | 07:39 AM

Bearcat Steve

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Nice tool, but it fails to take drag coefficient into account. I saw one once that took dag into account, but don't remember. I'll try to find it.

Jan 22, 2009 | 04:17 PM

cablebandit

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700+ dynojet IMHO. You can do it with less but thats what it takes for the normal street car

Jan 22, 2009 | 04:36 PM

zrater

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Jan 24, 2009 | 02:27 PM

luckyhenriksen

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Quote:

Originally Posted by Sicko

sweet, that's a fun little toy!

X2 I just spent 10 minutes typing in all sorts of combos lol

Jan 25, 2009 | 11:17 PM

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BackinBlack02SS

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Check out the Mososo power speed calculator. It is a suprisingly very accurate, simple little tool. Although I'm not sure it even goes past 4000 pounds.

Jan 26, 2009 | 02:11 AM

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demarco313

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http://www.ajdesigner.com/fl_horsepo...apsed_time.php

try that website

.. after putting your weight and how many seconds you will see alittle graph underneath it. You can put your mouse cursor on it and slide it up and down that that line and will show you all the times and horsepower.

Last edited by demarco313; Jan 26, 2009 at 02:17 AM.

Apr 14, 2009 | 02:17 PM

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JL ws-6

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Quote:

Originally Posted by mikef85

Google brought this up.

http://robrobinette.com/et.htm

That thing isn't even close. It says I have to be making 765 rwhp to run the times my car has @ 3350.... it only makes 450 at the tires and I"m putting 150 hp of nitrous to it.

No way in hell a single 65 jet is pushing a 450 rwhp motor to 765 LOL.

I doubt it's even 765 at the flywheel

Apr 14, 2009 | 03:54 PM

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Firehawk441

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Quote:

Originally Posted by BackinBlack02SS

Check out the Mososo power speed calculator. It is a suprisingly very accurate, simple little tool. Although I'm not sure it even goes past 4000 pounds.

Great tool. I've been using one for many years for my converter slip percentage. You're right though, it stops at 4000lbs.

Apr 15, 2009 | 06:12 AM

#14

JL ws-6

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The moroso tool does work, and is pretty accurate.

I have a moroso slide rule my grandfather gave me, that thing is almost dead on, not sure why the internet ones are all off like they are.

Apr 15, 2009 | 03:56 PM

#15

12secSS

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ET is based on traction, one thing that most will never even get close to being at the perfect case. Calculators that use weight and horsepower to generate the trap speed are more accurate and consistent, as well as closer to real world. JMHO.

Apr 15, 2009 | 06:06 PM

#16

JL ws-6

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The old *** cardboard slide rule I have is so accurate 99% of the time it hurts. I don't know how the #'s were derived, I just know it's always within 5%