MrMuse

Yeah I know a little bit, but can someone explain what it really means

respdoc

www.google.com

Vomit

Let me just put it this way. . . If it wasn't important, do you think that they would name a wrench after it?????

Vomit

This is mini vomit(Vomit's ten-year-old son. Torque is defined as a force that gives a twisting motion.

CE750

I've always heard.... "Horsepower sells cars, torque wins races.."

Last night my 400 ft/lb torque/231hp CDI ran a 15.5 1/4 mile... which bested a bone stock 1994 Mustang GT that I saw run 15.7 and a few other "sports" cars that have low torque..

But.. (and this is a big BUTT)

The real kings were the vehicles with high torque ABOVE 3000rpm... which is where my CDI falls short. Torque at the higher RPM band is key to being fast, and is why the AMG cars do so well.. My torque is GREAT for around town driving or passing on the freeway when you're pulling 2000rpm or so... but when you step on it, after about 3500rpm, my car has to shift to keep that torque level... an AMG or a typical high performance car can ride it up into the 5000's and more.

Torque is power
HP is power measured over time

HP=Torque at 5650 rpm (or something)..
those are a few pointers that should get you started..

MrMuse

Thanks,

Yeah I knew what it was, but I had to be sure. I forgot that I learned it in fysics. It was a while

Thanks anyway

benzmodz

Torque is cheap but not when you multiply it by 1000.

CE750

well, actually you need more like 4000-5000...

2QUIK4U

Where did you take "fysics"?

U2fast4me

(Torque x Engine speed) / 5,252 = Horsepower
The engine that makes 300 pound-feet of torque at 4,000 RPM produces [(300 x 4,000) / 5,252] 228 horsepower at 4,000 RPM. But where does the number 5,252 come from?

To get from pound-feet of torque to horsepower, you need to go through a few conversions. The number 5,252 is the result of lumping several different conversion factors together into one number.

First, 1 horsepower is defined as 550 foot-pounds per second (read How Horsepower Works to find out how they got that number). The units of torque are pound-feet. So to get from torque to horsepower, you need the "per second" term. You get that by multiplying the torque by the engine speed.

But engine speed is normally referred to in revolutions per minute (RPM). Since we want a "per second," we need to convert RPMs to "something per second." The seconds are easy -- we just divide by 60 to get from minutes to seconds. Now what we need is a dimensionless unit for revolutions: a radian. A radian is actually a ratio of the length of an arc divided by the length of a radius, so the units of length cancel out and you're left with a dimensionless measure.

You can think of a revolution as a measurement of an angle. One revolution is 360 degrees of a circle. Since the circumference of a circle is (2 x pi x radius), there are 2-pi radians in a revolution. To convert revolutions per minute to radians per second, you multiply RPM by (2-pi/60), which equals 0.10472 radians per second. This gives us the "per second" we need to calculate horsepower.

Let's put this all together. We need to get to horsepower, which is 550 foot-pounds per second, using torque (pound-feet) and engine speed (RPM). If we divide the 550 foot-pounds by the 0.10472 radians per second (engine speed), we get 550/0.10472, which equals 5,252.

So if you multiply torque (in pound-feet) by engine speed (in RPM) and divide the product by 5,252, RPM is converted to "radians per second" and you can get from torque to horsepower -- from "pound-feet" to "foot-pounds per second."

dragonAMG

My guess is Ebonics High in Compton CA

JamE55

lmao :p Do you have any hoetel rates for me?

RLS

torque from what I understand, is the low end "grunt" power. It is your pulling power. If you have 2 engines both the same size displacement wise , but one has a longer stroke with less piston size, it will have more torque. HP comes in at higher rpm. A good example of this, is the old 454 c.i. Buick and Chevy engines. The Buick had more torque because of it having a longer stroke, but the Chevy one had more hp. If you were to hook up a heavy trailer to both, the Buick would out pull the Chevy one any day. Now if you can keep the rpm up on launching, than you torque will not have to be that great and your hp will come into play.

dragonAMG

hehe... even though it's Vegas, the hoe is not included. I should have some rates back on Monday. What is the exact checkin and checkout dates?

Marktini

I remember torque as something like this:

Informally, torque can be thought of as "rotational force". The rotational equivalent of force, measured in pound-feet.

One pound-foot is equal to the twisting force produced when a one-pound force is applied to the end of a one-foot-long lever.

Improviz

How stuff works .com's horsepower page (has torque info)