Re: Hand cranked Tesla Coil?

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "David Rieben" <drieben@xxxxxxxxxxxxxxx>

Hi Matt,

I'm not too sure that one could "peddle power" 120
volts at a sustained 10 amps (1.2 kVA) or hand turn
600 VA worth of power. Assuming a 1.0 power fac-
tor, 1.2 kVA = 1.2 kW, which is equal to approximately
1.6 hp (746 watts = 1 hp). A horse power is equal to
33,000 ft-lbs/minute, or 550 ft-lbs/second. Methinks
even the strongest, most in-shape "manly man" could not
sustain this kind of power output for more than a few mi-
nutes at a time and at a very "low" duty cycle ;^) If  a 200
lb. man "squats" 350 lbs from a sqatting position to an up-
right standing position in 1.5 seconds (assuming 18"
of verticle travel from the lowest to highest position), this
represents about1 horse power of work and although a strong
legged man can do this without too much trouble, he's not
going to keep up this pace of work for more than a hand-
ful of repetitions before racking the 350 lbs and taking
a 3 to 5 minute breather before even thinking about trying it
again ;^). As a man who's done a bit of weight lifting, I can
tell you firsthand that after sqatting 350 lbs for 12 reps at nearly
full deep knee bends, I feel like I just finished running a marathon
and it takes several minutes of rest before my heart rate and
resperations return to more normal levels!

IMHO, only a fairly small coil could be expected to run off
of human power through REASONABLE muscular effort.

David



----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Friday, May 04, 2007 5:08 PM
Subject: Hand cranked Tesla Coil?


> Original poster: "M G" <gt4awd@xxxxxxxxx>
>
> Hi again, I would like to know if anyone on the list has built a
> "human" powered Tesla Coil. Be it a hand crank, peddle powered
> generator, etc... For some reason this seems to be of interest to me
> lately, and I can't get it off my mind. Eventually I would like to
> build my own little AC generator. Is this a highly complicated task
> or not so complicated? Be it either of those I would still like to do
> this eventually. I had ran into a website showing the creation of a
> wind mill AC generator, but lost the URL since then. It did not seem
> to be all that complicated, although some special fabrication of
> metal seemed to be needed. The mill would create over 30 amps at
> 120volts with a wind speed of 20mph. I would assume that a peddle
> powered generator (old bike) could be made to move at least 10amps at
> 120vo! lts. A hand crank maybe being able to move about 5 amps at
120volts.
>
> Thanks,
> Matt G.
>
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