Re: Hand cranked Tesla Coil?

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Yurtle Turtle <yurtle_t@xxxxxxxxx>

I'm guessing this request is for a portable device,
but if human powered is all you're after, how about a
big wind up spring, or better yet, some weights that
could be lifted to some height to "wind it up" then
slowly lowered on a rope or chain which would turn the
generator. You could set up a "table" on a rope or
chain, onto which you could start stacking weights.
Once it's sufficiently loaded to run a large enough
generator, you simply let it fall. The rope or chain
would be wrapped around the generator shaft, or geared
as needed. Could take minutes to "wind up" then
seconds to "discharge". A simple way to overcome the
horsepower requirements, versus people power
available.

Adam


--- Tesla list <tesla@xxxxxxxxxx> wrote:

> 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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