Is one of the objections to using pedestrian action to recharge =
batteries a case of the gait of your research subjects is not a normal =
human gait (as in a crippled person)? I have not seen any mention of =
this as being a problem in the thread.

To follow on Russell's idea of pumping, would it not be possible to have =
a generator made out of a small computer processor type fan spun with a =
pump action a bit like a child's top? I am thinking of the sort of top =
that was available perhaps 40 years ago with a handle that you pumped =
down on to make the top spin, a bit like the push screwdrivers you used =
to be able to get.

If nothing else this list certainly explores some way out ideas for =
trying to achieve the impossible.

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