Calculate 1/4-Mile E.T. From Horsepower - Horsepower Calculator
10-09-2006, 04:12 PM
#1
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Calculate 1/4-Mile E.T. From Horsepower - Horsepower Calculator
10-11-2006, 07:18 PM
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Originally Posted by Ljavy17
I should be running 12s man!
Kind of funny how I punch in 240WHP and a weight of 3,200 and I come up with a 13.8? I am assuming your car is about 3,000 and adding 200 for driver. Now these calculators are not 100% but they are usually with in a couple of tenths and don't take into consideration variables such as wheelspin or poor driving. I mean it's just a math calculation based on the power to weight ratio. Hey Asstyme I am from Janesville too
.
10-11-2006, 07:33 PM
#9
i call bs:
Originally Posted by Ricer Calculator
Your Cobalt which weighs about 3100 pounds should complete the 1/4-Mile in about 15.9 seconds, if you can produce about 152.43 HP at the wheels, or about 198.15 HP at the flywheel.
10-11-2006, 08:10 PM
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Originally Posted by D4u2s0t
i call bs:
This part of the calculator is based on a rear drive v8 car which will lose about 20% of the horsepower at the crankshaft. Now a front drive manual trans car will only lose about 5-7% of the HP from the crank to the wheel..... so you would only be producing about 160HP at the crank if this formula was set-up for a front drive stick. I guess using one of these calculators means you need to know a little bit about cars.......
10-11-2006, 08:12 PM
#12
Originally Posted by IROC R/T
This part of the calculator is based on a rear drive v8 car which will lose about 20% of the horsepower at the crankshaft. Now a front drive manual trans car will only lose about 5-7% of the HP from the crank to the wheel..... so you would only be producing about 160HP at the crank if this formula was set-up for a front drive stick. I guess using one of these calculators means you need to know a little bit about cars.......
haha... you say it's for people that know about cars, then say a fwd car only has 5-7% loss??
and it doesn't say anything on that page about it being for a rwd v8
10-11-2006, 08:13 PM
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It says i should be running 13.55 and I ran a 13.62. Im guessing im pushing 250hp it says im pushing 248. Seems alright to me.
How much HP are u guys pushing. My car weight 3148 lbs with me and a full tank of gas. Thats the weight im using and the numbers worked out pretty well for me.
Originally Posted by R33P3R007
me too. that thing is BS.
How much are you using for weight.
Anyone know how on/off the aeroforce hp gauge is. It's flywheel too right?
How much are you using for weight.
Anyone know how on/off the aeroforce hp gauge is. It's flywheel too right?
Originally Posted by Ljavy17
I should be running 12s man!
10-11-2006, 08:14 PM
#15
Originally Posted by p7x
It says i should be running 13.55 and I ran a 13.62. Im guessing im pushing 250hp it says im pushing 248. Seems alright to me.
who knows... maybe i'm the idiot! wouldn't be the first, or last time
10-11-2006, 08:19 PM
#16
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i think its a solid guess...
over the weekend with half tank of gas and me in it my car was 3160lbs
i put that in and my guestamated(sp?) hp and it gave me 12.6's...so with rob and a few others that i'm on the tuneing/moding level runing 12.80's i'd say this thing is dam close!
over the weekend with half tank of gas and me in it my car was 3160lbs
i put that in and my guestamated(sp?) hp and it gave me 12.6's...so with rob and a few others that i'm on the tuneing/moding level runing 12.80's i'd say this thing is dam close!
10-11-2006, 08:24 PM
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Originally Posted by 06black
i think its a solid guess...
over the weekend with half tank of gas and me in it my car was 3160lbs
i put that in and my guestamated(sp?) hp and it gave me 12.6's...so with rob and a few others that i'm on the tuneing/moding level runing 12.80's i'd say this thing is dam close!
over the weekend with half tank of gas and me in it my car was 3160lbs
i put that in and my guestamated(sp?) hp and it gave me 12.6's...so with rob and a few others that i'm on the tuneing/moding level runing 12.80's i'd say this thing is dam close!
10-11-2006, 08:24 PM
#18
Originally Posted by D4u2s0t
haha... you say it's for people that know about cars, then say a fwd car only has 5-7% loss?? and it doesn't say anything on that page about it being for a rwd v8
and it doesn't say anything on that page about it being for a rwd v8Says this at the bottom of the 1st block...
"This calculator esitmates your quarter-mile elapsed time (E.T.) when given the weight of the vehicle and flywheel or "at the wheels" horsepower. A 17% driveline loss is assumed for flywheel HP."
I would assume 17% means RWD
10-11-2006, 08:32 PM
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Originally Posted by BallsoutBalt
Says this at the bottom of the 1st block...
"This calculator esitmates your quarter-mile elapsed time (E.T.) when given the weight of the vehicle and flywheel or "at the wheels" horsepower. A 17% driveline loss is assumed for flywheel HP."
I would assume 17% means RWD
"This calculator esitmates your quarter-mile elapsed time (E.T.) when given the weight of the vehicle and flywheel or "at the wheels" horsepower. A 17% driveline loss is assumed for flywheel HP."
I would assume 17% means RWD
Yes, 17% is for rear drive- and an automatic will lose more than a stick, a high stall converter will eat a lot too, so will big transmissions such as a turbo 400 verses a turbo 350 and a Dana 60 verses a 10 bolt. You can buy a desktop dyno program that really can dial in on things and predict how changes will affect things.
10-11-2006, 08:36 PM
#21
Originally Posted by BallsoutBalt
Says this at the bottom of the 1st block...
"This calculator esitmates your quarter-mile elapsed time (E.T.) when given the weight of the vehicle and flywheel or "at the wheels" horsepower. A 17% driveline loss is assumed for flywheel HP."
I would assume 17% means RWD
"This calculator esitmates your quarter-mile elapsed time (E.T.) when given the weight of the vehicle and flywheel or "at the wheels" horsepower. A 17% driveline loss is assumed for flywheel HP."
I would assume 17% means RWD
right... but it calculate about a 25% loss... who knows
10-11-2006, 08:38 PM
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I hope that calculator is right. With 3000 lbs. and the 271 WHP I dynoed in 4th gear, I got a time of 12.9 and with the 274 WHP I dynoed in 3rd gear I got a time of 12.8. Not bad at all.
10-11-2006, 08:43 PM
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Originally Posted by DTM2188
I hope that calculator is right. With 3000 lbs. and the 271 WHP I dynoed in 4th gear, I got a time of 12.9 and with the 274 WHP I dynoed in 3rd gear I got a time of 12.8. Not bad at all.
10-11-2006, 08:44 PM
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Originally Posted by DTM2188
I hope that calculator is right. With 3000 lbs. and the 271 WHP I dynoed in 4th gear, I got a time of 12.9 and with the 274 WHP I dynoed in 3rd gear I got a time of 12.8. Not bad at all.
With traction and a good run I would think you would be pretty close but don't forget the conditions at the track might be a little different that at the dyno. How did you get the car's weight down to 3000? Hope you get yourself a 12.
