You might like to check this comparison of dynamo efficiency [1]. The Shimano
has as much drag with the lights off as on! It's missing the BM [2] models
though, which is a pity as they do a 12V 6W bottle model with a claimed
efficiency of 70%, beating even the Schmidt. The LightSPIN had a
2009/5/21 Al Johnson openm...@mazikeen.demon.co.uk
If you want something effective for emergencies or extended periods away
from
power a mechanical device is probably more effective. For cycling a good
dynamo will provide more, and more reliable, power than any bike-mounted
solar
panel.
look at http://www.sheldonbrown.com/harris/lighting/shimano.html
but remember you will have to have a good voltage regulator or better
a battery charger able to charge itself and the neo at time, in the
middle, to avoid the current variance of the dinamo
2009/5/23 Michal Brzozowski
Ok, I wasn't specific enough. What I'm looking for is exactly that thing in
the middle :-) that will output the 500mA or 1A through a USB.
Is a bike dynamo powerful enough to provide the 500mA or 1A to charge the
Freerunner?
2009/5/23 David Reyes Samblas Martinez da...@tuxbrain.com
look at
On Sat, May 23, 2009 at 2:16 PM, Michal Brzozowski ruso...@poczta.fm wrote:
Ok, I wasn't specific enough. What I'm looking for is exactly that thing in
the middle :-) that will output the 500mA or 1A through a USB.
Is a bike dynamo powerful enough to provide the 500mA or 1A to charge the
A normal bike dynamo has 6V and 3W so that would be 2A of current. I
think that should be plenty even with the losses through conversion to
5V DC. (Depends of course how fast you are going with your bike ;))
jake
oh my i'm totaly telling crap her :D
it must be 0.5 A.
in australia there is a company called www.pedalpower.com that has
the full solution, I trying to reach them but with any luck I will try
again tomorrow morning. but in parelell I trying to make my own
solution, just a aux batery able to recharge while charging providing
500mA will do the trick,
I'm starting to think that taking 2-3 additional FR batteries for a bike
trip or hike is an easier solution :-)
2009/5/23 David Reyes Samblas Martinez da...@tuxbrain.com
in australia there is a company called www.pedalpower.com that has
the full solution, I trying to reach them but with any
yes :) easier but less cool than have all your bike wired like a ciborg XD
2009/5/23 Michal Brzozowski ruso...@poczta.fm:
I'm starting to think that taking 2-3 additional FR batteries for a bike
trip or hike is an easier solution :-)
2009/5/23 David Reyes Samblas Martinez da...@tuxbrain.com
Dear All,
Solar backpack absorbs solar energy and turns it into electric energy
storing in storage battery. It can charge different specification mobile
phones through corresponding connectors.
I'm really interested in this. And I think solar backpack is much more
suitable for emergency
search on the list, there was some info on this, and has and here
http://wiki.openmoko.org/wiki/Solar_chargers you will find results on
some models I have tested, very dissapointing all in all.
If you find some model useful let me know
2009/5/21 Daniel.Li lida_m...@163.com:
Dear All,
Solar
The panel is too small to generate a reasonable amount of power, even if you
were by some chance to spend all your walking/cycling time in direct sunlight,
with your back to the sun, leaning forward to keep the panel at right angles
to the sun. You can get flexible fold-up panels that could be
On Thu, 2009-05-21 at 17:48 +0200, David Reyes Samblas Martinez wrote:
search on the list, there was some info on this, and has and here
http://wiki.openmoko.org/wiki/Solar_chargers you will find results on
some models I have tested, very dissapointing all in all.
If you find some model useful
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