[R-390] Vaguely on topic

Fri, 10 Jan 2003 20:43:46 -0500

Remember the Goassamer Condor of human powered flight fame?  This whole area
of human performace measurements has been thoroughly researched by Paul
MacCready.  I think he has published data on human power perfomance.  If you
are really interested this problem this is where I would start.

Ed, W9EJB
----- Original Message -----
From: "Robert Simpson" <[email protected]>
To: <[email protected]>; <[email protected]>
Sent: Friday, January 10, 2003 2:43 AM
Subject: Re: [R-390] Vaguely on topic

> Dave
>
> Interesting question.  One horsepower equals approx 745 watts and I have
> seen test rigs (for endurance testing) where a human riding a bicycle-type
> generator/alternator (don't remember which) was able to run a small
> television set.  I would estimate that output to be around 100 to 150
watts
> - or around 1/6 horsepower.  The subject was only able to maintain
> television reception for a relatively short period of time before becoming
> too fatigued (a matter of only a few minutes).  Don't remember what my
> R390A draws, but believe it is more than 150 watts - too lazy to
disconnect
> and remove from rack :-))  I believe the R390 draws more current than a
R390A.
>
> Another problem would be the varying voltage depending upon the speed of
> the bicycle rider which would require a voltage regulation system.
>
> Sounds like it might be an interesting experiment.
>
> Bob
>
> At 09:49 PM 1/9/03 -0500, [email protected] wrote:
> >Fellow r-390(A) drivers,
> >I remember years ago seeing advertised in various radio periodicals a
human
> >powered radio set. Any of you older than me oldtimers have any data on
> them ?
> >Anyone out there ever pedaled one while in military service ? Did the
> >generator set put out AC or DC ?
> >Would it be theoritically possible to power an R-390 with such a
generator ?
> >
> >Regards,
> >Dave
> >
> >
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