Hp/weight Ratio

[NeubJ]

I remeber reading about your hp to weight ratio but cant seem to find it. (and search function is down)
How do you figure out your HP to Weight Ratio?

[Mike's89AccordLX]

Wasn't it every 100lbs you lose you gain a thousandth of a second. I believe that was it.

[Mike's89AccordLX]

Torque vs. HP:
Torque and horsepower are often confused, although they are closely related in the equation for measuring horsepower. Currently, the only efficient method that exists for measuring horsepower is by measuring actual engine torque. By definition, horsepower is equal to force multiplied by distance, divided by time. With the proper constant in place, a simple equation is used to calculate horsepower:

hp=(torque*rpm) / 5252

The constant 5252 originates from the following formula used to determine horsepower: 33,00 pounds-feet divided by 2 times pi (6.283) equals 5252.

Take note that torque and horsepower are always equal at 5252 rpm. This results in torque and horsepower always crossing at 5252 rpm when drawn on a line graph. One pound-foot of torque below 5252 rpm produces less than one horsepower, which means that torque below 5252 rpm will always be higher than horsepower. Conversely, one pound-foot of torque above 5252 rpm makes more that one horsepower. Consequently, torque above 5252 rpm is always less than horsepower.


And that is the lesson of the day from me.

[MrBen]

"Step 1: Determine Vehicles Weight - Example, 1993 Ford Probe GT 2900lbs
Step 2: Determine Vehicles Horsepower - Example, 1993 Ford Probe GT 164
Step 3: Determine Vehicles Torque - Example, 1993 Ford Probte GT 160
Step 4: Divide the weight of your car by the horsepower - Example 2900/164 = 17.68
Step 5: Divide the weight of your car by the torque - Example 2900/160 = 18.12"

[Elijah]

So does it =18.12 or 17.68

[k-roy]

18.12 is HP to weight
17.68 is Torque to weight.

[Elijah]

Oh I was not understanding.Thanks.