Quote:
Originally Posted by TexasSP
Just wondering but does the force to slow something down at higher MPH compound like the power it requires at higher MPH.
ie: I know that if say 2HP will get you 40 MPH you will need much more than double to get you 80 MPH. This is factoring in aerodynamics, wind resistance, etcetera. I do not remember the equation but remember reading about this extensively a couple of years ago. So the question is if it takes x amount of force to stop a vehicle at 30 mph does it take 2(x) to stop it at 60 mph or is it more? It seems to me like it would.
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http://www.crashdamagerepair.com/calcs.htm
11 pound Savage stopped in a distance of 15 feet
at 50.89mph(20t pinion) = 63.53 pounds of force
at 63.61mph(25t pinion) = 99.26 pounds of force
Note that the 25% gearing change (5 tooth pinion increase) resulted in a 56% increase in force required to stop in the same 15ft distance.