Power Bike

What is the difference in power of a 15 gear mountain bike and 24 gear mountain bike?

I am asking this question considering that i am going up hill. How efficient is 24 gear bike than a 15 gear bike when climbing up the hill? Can anyone give me exact amount of maximum power these both bikes give?
I am asking this question considering that i am going up hill. How efficient is 24 gear bike than a 15 gear bike when climbing up the hill? Can anyone give me exact amount of maximum power these both bikes give? By power i mean the power/torque to go up. Like a car has more power in first gear than the 4th. I basically want some statistics. otherwise i am engineer my self.
By power i mean the power/torque to go up. Like a car has more power in first gear than the 4th. I basically want some statistics. otherwise i am engineer my self.

The gears of a bike are designed around the physics of ratios – like a winch would be; the longer you make the chain going round the furthest pulley against the first pulley, the higher amounts of turns the first pulley will have to travel. If the opposite is true the slower the front pulley turns and the faster the rear pulley will have to turn, but achieve greater speeds – assuming the lever is the same length but at a cost of higher effort. In this case the lever, the crank, will remain the same at every revolution. Therefore for a higher wheel speed you require the largest pulley at the front and the smallest pulley at the rear. This simplicity does not take into consideration geographical variations – like hills – wind – and rider differences – fat or thin – strong or weak.

The measurement you should be more interested in – is the amount of inches your bike can travel with one turn of the crank – and it should ROUGHLY be calculated thus:

FRONT COG / REAR COG X WHEEL DIAMETER IN INCHES.

Therefore

52 front 15 rear on a 27 inch diameter wheel gives a gear of 93 inches – or 93 inches of travel for one turn of the crank.

and 42 front and 23 rear gives a gear of 49 inches

Power is something entirely different.

power bike commercial

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