Hi all, seem's there may be one or two misconceptions with the spring power
idea I was proposing,
A) this thing isn't intended to run a recharge circuit, It's a direct
repalcement for the battery..
B) by 'pumping' the lever I was implying several strokes of the lever applyed
to a ratchet system...
C) what I was suggesting had nothing to do with walking.. The coment oboat
standing on the thing was
just a practical consideration concerning how to put the most power into
each charging stroke.
by the way by "severely stiff spring" I'm thinking of something that would
'allmost' need a break press
to compress!
Just thought I should clear up these point's before any more discussion.
regard's
Shane Norris
((
) || ());
Vaughan Pratt wrote:
> >Although you can't charge an AA battery that fast, we now at least have
> >figured out that 36 feet is how far your 125-lb weight needs to fall to
> >charge it. So you just have to arrange for the 125 lbs (you or surrogate)
> >to cover the 36 feet vertically slowly enough that the AA battery can
> >absorb the charge without overheating.
>
> I forgot to add the implication that to store an AA cell's worth of energy
> in a spring by standing on a lever, you have to move the lever 36 feet.
>
> For the equivalent of a Sony NP-F950 (32.4 WHr) you'd have to move the
> lever 686 feet using your 125 lbs of body weight. I'd prefer to just
> plug it into a charger and come back a couple of hours later. But I'll
> concede that if you're deep in the Amazon jungle with neither power
> outlets nor solar power this might not be an option.
>
> Vaughan
>
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