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Old March 6th 17, 01:03 AM posted to
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Default More About Lights

On Sunday, March 5, 2017 at 11:32:51 AM UTC-8, Jeff Liebermann wrote:
On Sun, 5 Mar 2017 10:56:09 -0800 (PST), wrote:

But when you look up the lights you find the same problem - you
have a very difficult time finding power in and lumens out.

Hint: Measuring lumens is messy and expensive. Here's what it took
to verify lumens in 2014:
(I like the lumens/dollar bar graph).

For numbers and beam pattern photos, try:
There are others, but that's what I found in my bookmark collection.
There are also comparisons and tests on YouTube.

Jeff Liebermann

150 Felker St #D
Santa Cruz CA 95060
Skype: JeffLiebermann AE6KS 831-336-2558

Thanks Jeff. These however all appear to be battery powered lights. We were sort of looking for lights that operated on the hub dynamo of 6V 3W or the Globe dynamo of 12V 6W or four times the power.

This is why the hub generator has so little drag.


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