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Re: {BL} Re: Better than a Schmidt hub? Matthew J Wed Feb 15 18:01:06 2012

> Some of that's true but they do say

Some?  More like all.

> Elsewhere they say that the light consumes less than 2W (presumably
> the drag is higher).  So it sounds like the efficiency is in the same
> ballpark as other dynamo + LED systems.

Can't sustain any such claim versus the SON or any other production
hub.  Until such time as these are actually being manufactured for
sale any performance claim is pure conjecture.

On Feb 15, 2:41 pm, Glenn Ammons <[EMAIL PROTECTED]> wrote:
> On Wed, Feb 15, 2012 at 2:26 PM, Peter Jon White <[EMAIL PROTECTED]> wrote:
>
> > Better? How could anyone possibly know? These guys are promoting
> > vaporware. They're trying to raise money for manufacturing the parts.
> > They give no specifications. There are neither lux nor lumens ratings
> > for how bright their light is, no mention of mechanical drag numbers,
> > power output of the system, nothing about how the beam is focused. All
> > we know is what it looks like, or rather, what the prototype or mock-
> > up looks like.
>
> Some of that's true but they do say
>
>   And in november we tested the first carbon prototypes: A front light
> of 150 g emits 150 lumen at ~16 mph
>
> Elsewhere they say that the light consumes less than 2W (presumably
> the drag is higher).  So it sounds like the efficiency is in the same
> ballpark as other dynamo + LED systems.  I wonder if, theoretically, a
> Magnic Light could be as efficient as a hub dynamo.  I mount my lights
> near aluminum rims so the basic idea is intriguing for me.
>
> They're showing the light at a bike fair in Germany weekend after next
> (http://www.fahrrad-essen.de/en/fahrrad_2012/index.html) so we'll
> probably see more reports then.
>
> --glenn
> West Chester, PA, USA

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