Re: Batteryless bicycle lights, new kind dynamo

Tim Wescott wrote:

Rene Tschaggelar wrote:

iwicom@xxxxxxxxx wrote:

No battery is needed. No friction on any parts of the bicycle. Based on
a newly invented generator, this light system works regardless the
bicycle's speed and weather conditions (not like normal dynamos!).

our website: http://www.freelights.co.uk 

Wow, we always wanted this kind of perpetum mobile.
... It won't slow me down ...
( Worldwide patents panding. )
Great. Can I order a 10MW machine ?

It's been ripped apart on this group before. The page does admit that it's not completely dragless, but shows quite a bit of ignorance about physics. If he's going from mechanical motion to LED's with fairly low loss he's doing well. If he's actually generating enough light to be seen then that's pretty good.

I suspect that he _is_ getting more efficiency at low speeds with his tumbling magnet idea, and it's pretty easy to beat the usual wheel-on-the-tire arrangement. I doubt that it'd light up the road like a good generator (I've always wanted a Sturmy-Archer Dynohub).


Thanks Tim,
The usual wheel-on-the-tire got improved meanwhile.
They are using brushless DC motors with rather high
efficieny. When you're out in the nowhere where at
certain wheather conditions it can be darker than
in a cow, even high brightness 10W are not that much.
The local bike store sells twin 10W beams for $100++

Rene
--
Ing.Buero R.Tschaggelar - http://www.ibrtses.com
& commercial newsgroups - http://www.talkto.net
.

Relevant Pages

  • Re: Batteryless bicycle lights, new kind dynamo
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