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We too use the video & camera...but most kids can't get it to operate (it
requires a fair amount of exertion).  However that is only one of three
options.  Essentially you pedal, and you press a button to either operate a
fan, a light, or the T.V.  The nice thing about this, is it allows the bike
rider to see which takes the most energy and which takes the least energy
to power.  If I were to change it, I would get rid of the pushbuttons and
go with switches.

-William

William Katzman                    "The important thing is to never stop
questioning." -A. Einstein
Director of Exhibits               "Are you sure about that Al?" -His wife.
Catawba Science Center
ph: (828) 322-8169 x307
fax:(828) 322-1585
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-----Original Message-----
From:   George Wurtak [SMTP:[log in to unmask]]
Sent:   Thursday, November 20, 2003 7:48 AM
Subject:        Re: Bicycle Generator

ISEN-ASTC-L is a service of the Association of Science-Technology Centers
Incorporated, a worldwide network of science museums and related
institutions.
************************************************************************
*****

At my former Science Centre, we went through various iterations of bicycle
generators.  The most recent versions have lasted many years, using upright
exercise bikes, with the generators housed in clear plexi boxes in front.
One of the bikes was tied in to a series of large LED displays (the more
you
pedalled, the higher the lights lit).  At certain spots in the series, an
arrow indicated that you were generating enough electricity to power
various
electrical devices.

The other bike was even more popular.  I purchased a B&W 12volt TV and
video
camera from radio shack (about $200 way back then) and had it wired to the
generator.  The camera is directed at the rider.  Upon reaching a certain
level of exertion (and electrical generation), the camera and tv powered up
and displayed the grinning face of the rider.  People loved it - they just
love to see themselves on TV!  You might want to consider something along
those lines (much greater attracting power than powering up a radio or
fan).

-George Wurtak Consulting
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