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12-20-2012, 05:43 AM
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#1 |
     Drives: SRT Yugo GT Super Sport with Manual Join Date: Mar 2012
Location: va
Posts: 1,536
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HP/Torque Math Question.
It takes 260hp and 240lb torque to move a vehicle weighing 3900lbs to get to a certain speed at a certain time frame. Now in adding another 200lbs weight to car how much more hp/tq will need to be added to move the same vehicle to the same speed at the same given time frame? 10 hp/tq, 20 0r 30 more hp/tq? How much? Any know the formula or good guess?
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12-20-2012, 05:52 AM
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#2 |
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Account Suspended
Drives: Eve - 2011 Camaro 2SS/RS Join Date: Apr 2012
Location: Fairfield, OH
Posts: 11,815
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12-20-2012, 05:56 AM
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#3 |
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just can't get enough
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12-20-2012, 11:40 AM
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#4 |
 Drives: 2013 LS3 Join Date: Jul 2011
Location: Orange County, CA
Posts: 68
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12.3 RWTQ
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12-20-2012, 01:22 PM
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#5 |
      Drives: 2013 Triple Black ZL1 Vert M6 ECF Join Date: Mar 2011
Location: Trenton, Michigan
Posts: 7,047
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4.1 Hampsters
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12-20-2012, 01:50 PM
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#6 |
Drives: 2017 Mosaic Bk ZL1 M6 Join Date: Jul 2009
Location: South of Raleigh, NC
Posts: 9,487
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If it's a Mustang you'll need 1 of these for every 10 pounds
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12-20-2012, 04:05 PM
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#7 | |
 Drives: 2012 45th anniversary Join Date: Apr 2012
Location: Currently in Corpus Christi Texas
Posts: 363
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Quote:
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12-20-2012, 06:00 PM
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#8 |
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Drives: 2013 1ss Join Date: Jul 2012
Location: WI.
Posts: 525
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Force = Mass x acceleration.
Torque = 3900 x acceleration So acceleration = torque/mass .06154 = 240/3900 New torque would be to add 200 lbs to the 3900 and recalculate using the found acceleration ? = 4100 x .06154 252.3 = 4100 x .6154 Sorry folks, bored guy here sitting in a Wisconsin blizzard. |
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12-20-2012, 06:22 PM
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#9 |
Drives: 2012 45th Vert, 2011 4x4, 9sec Vega Join Date: Mar 2012
Location: Canada
Posts: 2,188
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We now have 12.3 ft lb by two people. I'm going to accept that as the correct answer.
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I feel it only fair to warn you, I have a black belt in CAPS LOCK.
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12-20-2012, 06:25 PM
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#10 |
Drives: 2016 Mazda6, 2011 Mustang 5.0 Join Date: Mar 2010
Location: Portage, Wisconsin
Posts: 4,049
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The 12.3 torque figure sounds correct....assuming the percent gain of torque is the same over the entire RPM range.
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2022 1SS 1LE (Arrived 4/29/22)
"The car is the closest thing we will ever create to something that is alive."  . 2022 1SS 1LE (Coming Soon) |
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12-20-2012, 06:28 PM
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#11 |
Drives: 2011 camaro synergy Join Date: Sep 2012
Location: Powhatan Virginia
Posts: 73
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Don't know about you guys,but I got out of school a long,long time ago..........and never looked back!!!
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12-21-2012, 11:37 AM
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#12 | |
Drives: 2012 2SS/RS M6 Join Date: Jul 2011
Location: Metro Detroit
Posts: 696
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Quote:
Torque = 3900 x acceleration This equation is incorrect. You may have meant Torque = Power / Engine speed |
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12-21-2012, 01:41 PM
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#13 |
Drives: 2014 1LS M6 Supercharged Join Date: Feb 2011
Location: New Britain, Ct
Posts: 937
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You can also do the Math using the Ratio of one to the other. 260 is to 3900 as X is to 4100. comes out 13.3 HP
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12-21-2012, 05:17 PM
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#14 | |
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Drives: 2013 1ss Join Date: Jul 2012
Location: WI.
Posts: 525
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Quote:
Torque = mass x acceleration. 3900 is the mass of the object and is used to find acceleration. |
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