Sunday, October 30, 2011

Re: [Electric Boats] Well, I am pleased to meet you, won't you guess my name.

 

Hey this just showed up in my mail box.  Anyway you are forgiven and you are right the human body can't out out a lot of power for very long...

on the bike at PT I can put out about 75 to 80 watts for about half hour or so at a time then it drops to about 50 to 60 watts....

--- On Tue, 10/18/11, Ben Okopnik <ben@linuxgazette.net> wrote:

On Mon, Oct 17, 2011 at 10:34:22PM -0700, Femm wrote:
>
> Ben your statement about what do you do when you run out of fuel sparked an
> idea. As did Lochadios about a small foot print on the deck.

[...]

> Make a mount for the alternator so the pulley is over the center of the rim and
> fit your drive belt.  Wire it up and you have fuel less charging system.  You
> now get your work out to stay fit and charge your batteries at the same time.
> You may wish to install a volt meter so you know how fast you need to pedal to
> keep the voltage up.

[grin] Same problem as the 4HP motor, times N: max sustained human power
output is significantly less than 1HP (about 0.1HP, a.k.a. 75W, over an
8 hour period, or in the range of 0.4HP for a few minutes for the
average healthy human.) Add in the power losses, and there's not much
left.

> Sorry I'm not a he  [01]

Whoops - my bad assumption (especially egregious since "Femm" should
have clued me in.) Sorry, Kristine!


--
Ben Okopnik
-=-=-=-=-=-


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