Re: A Non-friction bicycle lights generator (dynamo)

On 29 Nov 2005 05:28:54 -0800, iwicom@xxxxxxxxx wrote:

>In this new generation bicycle light system, no battery is needed, no
>friction on any parts of the bicycle. The lights flash regardless speed
>of the bicycle and weather conditions (unlike normal dynamos!). Very
>bright.
>
>It can be used as a stand-alone light system (as a normal dynamo) on
>your bike, or used as a back-up for your existed battery-powered lights
>
>All details and buy on-line: http://www.freelights.co.uk

Nice system, except for your implied violation of the Law of
Energy Conservation. If the dynamo really does not produce
any drag, then where does the energy come from to light the
lamps? I know you say "no drag can be detected" and I assume
you mean by yourself when riding the bike. But why not be
more honest and state low drag and low friction instead of
no drag and no friction? Even better, why not quantify the
drag and friction so your system could be compared to
others?

--
Vic Roberts
http://www.RobertsResearchInc.com
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