The Freeplay alternator produces more power than I first thought.
Here you can see me hand cranking 4 amps into a 3.6v NimH battery pack. (not advised for long periods of time).
That's 21 watts of power - according to the watts up meter, I have no reason to doubt it.
How come ohms law states
3.6v x 4A = 14.4 watts, thats a third less than actual power generated?
I suspect it is something to do with efficiency.
Most of the hand cranked competition you would be lucky to get 0.5A before the handle broke or gears shear.
Buy Freeplay gear if they are still trading