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Old March 23rd 17, 02:46 AM posted to rec.bicycles.tech
Jeff Liebermann
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Posts: 4,018
Default The University of Aalborg Study on Daytime Flashing Lights for Bicycles.

On Wed, 22 Mar 2017 13:55:00 -0700, sms
wrote:

On 3/22/2017 9:38 AM, Jeff Liebermann wrote:
On Wed, 22 Mar 2017 14:34:03 +0700, John B.
wrote:

I think he had a six cell mag-light clamped on his
bike, but as I didn't stop to talk with him I can't be sure. But it
sure was bright.

But I don't see six cell mag-lights being suggested for bicycles :-)


No problem:
http://www.learnbydestroying.com/jeffl/pics/bicycles/slides/bicycle-flashlight.html


You've been posting the link to that photo for years.


The EXIF info for the picture (click the little camera icon to the
upper right of the photo) says Jan 2011. So, that would be about 6
years. To avoid complaints about posting repetitious links, I change
the URL from the original:
http://802.11junk.com/jeffl/pics/bicycles/slides/bicycle-flashlight.html
When I wear out the new URL, I'll probably switch to:
http://802.11junk.com/jeffl/pics/bicycles/bicycle-flashlight.jpg
or:
http://www.LearnByDestroying.com/jeffl/pics/bicycles/bicycle-flashlight.jpg
When your patience with those links expire, I have a variety of other
domains available.

At least order one of these: https://www.amazon.com/dp/B000AO3H24 or
build one of these http://nordicgroup.us/s78/images/IMG_0303.JPG.


The Wald flashlight holder implies that the arrangement might be
permanent, which would not be the case. It's not very useful since
there is no way to adjust the flashlight position.

Your flashlight holder contrivance is clever and probably woth
considering because none of the infamous Santa Cruz bicycle component
thieves would consider removing it for resale. Were I to design and
build such a contrivance, it would be based on a DIN rail mounted
across the handlebars, with a variety of optional attachments
(flashlight, switching, charge controller, horn, bell, evidence
camera, smartphone, GPS, radar, ultrasonic vehicle passing distance
measure, paintball canon, etc).
https://www.google.com/search?tbm=isch&q=din+rail+mounting+clip
I already have most of the DIN rail parts and have just received some
of the cheap eBay flashlights. The plan is to attach 5 or 7
flashlights across the DIN rail, each aimed individually and powered
by 14500 or 18650 batteries. While there are theoretical arguments
that suggest that this approach might be a dumb idea, I want to see
for myself. If it works, I'll upgrade to a MegaLumen photon torpedo
system for the Kickstarter version.

Bungie cords are unacceptable.


Bungie cords were all I had available at the time. My regular
headlight was lost or stolen, and all I could find was my big heavy
Maglite. I use Bungie cords to secure my junk to the rear rack, so a
repurposed them as a flashlight mount. What it lacked in stability,
aiming accuracy, aesthetics, and sex appeal, the Bungie bicycle
headlight mount (patent pending) was quite adequate to safely
transport me across town after dark.

--
Jeff Liebermann
150 Felker St #D
http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
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