mark kibort

And why on earth wouldnt you want to look at this at equivilant speeds?

as you probably know, Double the speed, and you will need 8x the power! (power goes up with the cube of speed) Even more of a reason to not consider looking at any other speed than the SAME speed when comparing two vehicles performance.

MK

krC2S

power of engine/wheel or power of what goes with cube speed?

mark kibort

Power required goes up with the cube of speed, as measured/or produced at the rear wheels to reach a higher maximum top speed.

mk

krC2S

sure that's just the power due to drag forces( drag forces go with square velocity) so if you can overcome it you need to do that ..we were just discussing engines and power transmitted to the wheels which is linear with velocity

mark kibort

Yes, power to the wheels is relatively constant, and independent of velocity, however, rear wheel torque is inversely proportional to speed and directly related to power. This is why you need to compare the performance of two same hp engines, at the same velocity (vehicle speed). Otherwise, you are comparing apples and coconuts.

mk