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Grunterhunter wrote:
Pager wrote
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why do people talk so much about HP an KWs when its torque that accelerates a car????
Granted, a fat torque curve is always going to be better for curcit racing & general driving than a peaky one, but more power will give you better acceleration if you get the gearing right......
It would be interesting to see a simulation of where the crossover is - i.e engine 1 has 130hp @ 7500, & engine 2 has 200hp @ 7500. how much more torque would engine 1 have to have down low in order to be faster from 0-100 or down the quater given optimal gearing? My guess is that you would have to assume some pretty spastic looking torque curves for the 130hp to ever keep pace.
People talk about bhp because it describes the amount of work that the engine's torque can do in a given period of time.
a 130bhp engine will never match the accelleration of a 170bhp engine in a similar car. For an engine to have enough torque down low to match the 170bhp @ 7500rpm, it would have to make (at least) 170bhp @"lower"rpm and be geared very very tall to compensate.
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