If torque determines a motorcycles accelaration, why does it pull harder at higher revs (bike with flat torque curve)

Question

i started riding a CB500F, it has a flat torque curve, pretty much the same torque at 3k and 9k rpm, then why does the bike (in the same gear) accelate much faster at higher than lower revs?

In: 88

Answer 1

So there is a mechanical link between torque, time, and horsepower. Torque is the ‘push’ in one rotation of the engine. RPM (revolutions per minute) is how many rotations you apply. In every Dyno (dynamometer, measures input power to a known system) there is a crossover where torque and HP are scaled equivalently.

More rpm = higher horsepower (torque / second) = go fast.
Smaller piston diameter = less internal friction, and therefore more efficiency.

Here’s a recent video I saw that can help.