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Home > Archive > Alternative Power sources > November 2005 > A Non-friction bicycle lights generator (dynamo)
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| Author |
A Non-friction bicycle lights generator (dynamo)
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| iwicom@yahoo.com 2005-11-11, 2:21 pm |
| 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
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| Steve Spence 2005-11-11, 2:21 pm |
| iwicom@yahoo.com 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
>
Well, they can say there is no "friction", but there will be a
measurable load put on the pedaler, equal or slightly exceeding the
wattage of the lights. Sales people can't eliminate the laws of physics,
but they can deny them in print.
--
Steve Spence
Dir., Green Trust, http://www.green-trust.org
Contributing Editor, http://www.off-grid.net
http://www.rebelwolf.com/essn.html
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| Dave Hinz 2005-11-11, 2:21 pm |
| On 11 Nov 2005 09:42:00 -0800, iwicom@yahoo.com <iwicom@yahoo.com> wrote:
> In this new generation bicycle light system, no battery is needed, no
> friction on any parts of the bicycle.
Wow. I had one of those "new generation" gizmos when I was a kid, in
the early 1970s.
Your spam is unwelcome here, or anywhere.
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| Ashley Clarke 2005-11-11, 8:21 pm |
| To quote:
"The Police would never caution anyone riding a Bike with flashing lights".
-----------------------------------------------------------------------
Ashley Clarke
-------------------------------------------------------
"Steve Spence" <sspence@green-trust.org> wrote in message
news:4374d9c8$1_4@newsfeed.slurp.net...
> iwicom@yahoo.com wrote:
>
> Well, they can say there is no "friction", but there will be a
> measurable load put on the pedaler, equal or slightly exceeding the
> wattage of the lights. Sales people can't eliminate the laws of physics,
> but they can deny them in print.
>
>
>
>
> --
> Steve Spence
> Dir., Green Trust, http://www.green-trust.org
> Contributing Editor, http://www.off-grid.net
> http://www.rebelwolf.com/essn.html
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| nospam.clare.nce@sny.der.on.ca 2005-11-12, 3:21 am |
| On Fri, 11 Nov 2005 12:53:06 -0500, Steve Spence
<sspence@green-trust.org> wrote:
>Well, they can say there is no "friction", but there will be a
>measurable load put on the pedaler, equal or slightly exceeding the
>wattage of the lights. Sales people can't eliminate the laws of physics,
>but they can deny them in print.
You will have to admit though, the efficiency will be MUCH higher than
a friction drive, particularly one that is not 100% tangentially
aligned.
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| Vaughn 2005-11-12, 9:21 am |
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<nospam.clare.nce@sny.der.on.ca> wrote in message
news:492bn116la5d2ep8kdn8dkltanh9gmbkhq@4ax.com...
> On Fri, 11 Nov 2005 12:53:06 -0500, Steve Spence
> You will have to admit though, the efficiency will be MUCH higher than
> a friction drive, particularly one that is not 100% tangentially
> aligned.
In the same way that an accelerator peddle works MUCH better than a buggy
whip. Serious bikers stopped using generators decades ago. LEDs and batteries
work much better.
Vaughn
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| Steve Spence 2005-11-12, 7:21 pm |
| nospam.clare.nce@sny.der.on.ca wrote:
> On Fri, 11 Nov 2005 12:53:06 -0500, Steve Spence
> <sspence@green-trust.org> wrote:
>
>
>
>
>
>
> You will have to admit though, the efficiency will be MUCH higher than
> a friction drive, particularly one that is not 100% tangentially
> aligned.
absolutely, but that isn't the theme of the sight. It appears they are
claiming magical free energy as there is no apparent load on the operator.
--
Steve Spence
Dir., Green Trust, http://www.green-trust.org
Contributing Editor, http://www.off-grid.net
http://www.rebelwolf.com/essn.html
| |
|
| Steve Spence wrote:
> Well, they can say there is no "friction", but there will be a
> measurable load put on the pedaler, equal or slightly exceeding the
> wattage of the lights. Sales people can't eliminate the laws of physics,
> but they can deny them in print.
"Note: Some people wrote to us, saying they do not believe there is no
drag in this dynamo. Technically, there is a drag force but only
between the two magnets. Unlike typical dynamos there is no scraping
against the tire to slow down the bike itself. On a real bicycle, even
the drag force between the two magnets is too small to be detected."
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| Gordon Richmond 2005-11-13, 11:21 am |
| Anybody remember the hub dynamos that used to be found on some British
bicycles?
Gordon Richmond
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| Anthony Matonak 2005-11-13, 3:21 pm |
| Gordon Richmond wrote:
> Anybody remember the hub dynamos that used to be found on some British
> bicycles?
They still make them and they work a heck of a lot better
than this spammers product.
http://www.peterwhitecycles.com/Schmidt-Lumotec.asp
Anthony
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| Steve Thomas 2005-11-13, 5:21 pm |
| "Sturmey Archer Dyna Hub"
Not sure about the spelling, but that is close.
Standard equipment on my Raleigh 3 speed "Superb" model touring bike.
"Gordon Richmond" <richmond@telusplanet.net> wrote in message
news:7qlen1t5lmi0dtj0vd4jm15sr26r7l5gsi@4ax.com...
> Anybody remember the hub dynamos that used to be found on some British
> bicycles?
>
> Gordon Richmond
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| Steve Spence 2005-11-14, 11:21 pm |
| bogax wrote:
> Steve Spence wrote:
>
>
>
>
> "Note: Some people wrote to us, saying they do not believe there is no
> drag in this dynamo. Technically, there is a drag force but only
> between the two magnets. Unlike typical dynamos there is no scraping
> against the tire to slow down the bike itself. On a real bicycle, even
> the drag force between the two magnets is too small to be detected."
>
yep, and that drag between the magnets is transmitted to the person
pedaling as increased resistance. Minute, but calculable.
--
Steve Spence
Dir., Green Trust, http://www.green-trust.org
Contributing Editor, http://www.off-grid.net
http://www.rebelwolf.com/essn.html
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| nospam.clare.nce@sny.der.on.ca 2005-11-15, 12:21 am |
| On Sun, 13 Nov 2005 15:10:38 GMT, Gordon Richmond
<richmond@telusplanet.net> wrote:
>Anybody remember the hub dynamos that used to be found on some British
>bicycles?
>
>Gordon Richmond
Yup -Raliegh DynaHubs. Very efficient, compared to rim-drive. Quite
pricy and sought after today. Biggest problem is most are 40 holers -
most non raliegh wheels are 32 or 36.
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