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| http://www.candlepowerforums.com/vb/showthread.php?364639-Sunwayman-D40A-(XM-L2-4xAA)-Review-RUNTIMES-BEAMSHOTS-VIDEO-more |
Why use expensive flash lights?
Regular bicycle lights are made with a wide beam
that shines in the eyes of drivers in the opposite direction lane. A wide angle
lens can help this situation by turning the lens vertically, or just keep it
low on the road. I don't like it when people flash their bright lights in my
face.
Most of these expensive hand torches have very
tight beams that will keep the light out of driver’s eyes. Look for the best
“throwers”. Also look for the most light on the second to highest
setting, because the highest will burn out the torch.
The Eagletac TX25C2 or the Malkoff MD4
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| http://www.candlepowerforums.com/vb/showthread.php?357531-Eagletac-TX25C2-%28XM-L2-1x18650-2xCR123A-RCR%29-Review-RUNTIMES-VIDEO-BEAMSHOTS&highlight=eagletac+G25C2 |
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| http://flashlightguide.com/2014/01/review-malkoff-wildcat-flashlight/ |
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| http://www.amazon.com/gp/product/B00EPWIIRQ/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1 |
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| wide angle lens set vertically, round lights blind traffic in the opposite direction |
My new Nitecore EC20 ran almost two hours at 960
lumins, on one Orbtronic 3400 mAh 18650 cell. However my Sunwayman D40A has a
better beam at the second to highest setting of 610 lumins. Best deal you can
get on a bicycle light.
The Nitecore's beam is dark in the center, and is
wider than the Sunwayman. The D40A's run time is about 90 minutes, on four rechargeable
AA batteries. Longer with disposable cells.
If money is not a problem the Eagletac TX25C2
(with new L.E.D.) has got to be better at 910 lumins for at least 100 minutes.
Do not use a cheap battery, and be sure to condition the cell by draining and
charging a couple of times.
I discovered that a tight beam and a slightly
wider beam work well together on the road. If they are not mounted too high on
the bicycle, the beams stretch out in an oval. But I still need a wide angle
beam for close up luminosity.
If I were looking for a single light, I would go
for the Fenix BC30 or the Ixon and then a longer throw torch after I see if I
need one for fast riding.
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| Nitecore EC20 find the holder on amazon. |
This torch does not maintain the 960 lumins long, even if it does stay on the highest setting for a long time.
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| these use 8.4 volts maximum |
These lights really need a wide angle lens to keep the light out of oncoming traffic's eyes. Order it separately.
Typically lumen claims like this are LED lumens, meaning for a very brief period at turn on, the light is theoretically capable of producing 1200 lumens at the LED.
However, there is sometimes a quick drop in output with-in the first few minutes, and after taking into consideration reflector loss and front glass cover loss, you're probably looking at anywhere from 20-40% less than the manufacturer's claim
http://www.candlepowerforums.com/vb/showthread.php?390424-newest-magic-shine-lamp&p=4512384&posted=1#post4512384
http://www.nordicgroup.us/s78/flashlights.html
http://www.hemmingfire.com/news/fullstory.php/aid/1790/Managing_the_lithium__ion__battery_fire_risk.html
what good batteries do:http://www.candlepowerforums.com/vb/showthread.php?393604-Orbtronic-verses-Ultrafire&p=4556302#post4556302
http://www.candlepowerforums.com/vb/showthread.php?390423-smart-charger-for-18650-packs
Fast charging NiMH cells
http://www.candlepowerforums.com/vb/showthread.php?396207-Fast-charging-NiMH
Typically lumen claims like this are LED lumens, meaning for a very brief period at turn on, the light is theoretically capable of producing 1200 lumens at the LED.
However, there is sometimes a quick drop in output with-in the first few minutes, and after taking into consideration reflector loss and front glass cover loss, you're probably looking at anywhere from 20-40% less than the manufacturer's claim
The Magic shine has a dark spot in the middle
of the beam because it uses a quad emitter LED. It does not throw well
because it makes a wide beam, the wider the beam the less bright it appears. So
I want two wide beam and at least one good thrower torch..
Warning! The 'magic shine' is not totally
waterproof! It’s been raining so much that a friends Nite Rider light
similar to it shorted out. I wonder how many other lights are not waterproof.
http://www.candlepowerforums.com/vb/showthread.php?390424-newest-magic-shine-lamp&p=4512384&posted=1#post4512384
http://www.nordicgroup.us/s78/flashlights.html
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This one has is customized with a wire coming out the back to a battery pack. |
Searching
for lights:
This light has the best
beam pattern for road use. All parabolic reflectors have spill that
will blind drivers in the opposite direction lane.
IXON SHAPED BEAM LAMPS
 
This is the right place to mount lights
This one is the best I have seen with
LEDs and NiMH rechargeable 5 hours on four AAs
A flux of 1000 lumens, concentrated into an
area of one square meter, lights up that square meter with a luminance of
1000 lux. However, the same 1000 lumens, spread out over ten square meters,
produce a dimmer luminance of only 100 lux.
Achieving a luminance of 500 lux might be
possible in a home kitchen with a single fluorescent light fixture
with an output of 12000 lumens. To light a factory floor with dozens
of times the area of the kitchen would require dozens of such fixtures. Thus,
lighting a larger area to the same level of lux requires a greater number of
lumens.
The projected beam is brightest at the
top, and is progressively dimmer towards the bottom. This results in amazingly
even illumination of the road surface ahead, unlike so many other headlights
you'll find in bike shops that are really just flashlights with a handlebar
mount.
IXON IQ & IXON IQ Premium
LED Headlights  |
.jpg)  Specialized Flux Expert/Elite
Does it blind drivers in the opposite direction lane?
Fenix BC 30 
this light is not the best for sure.
MUST READ THIS: http://www.candlepowerforums.com/vb/showthread.php?390108-New-Fenix-BC30-Bike-Light-Review-Dual-distance-beam-Twin-XM-L2-T6&highlight=Ixon+IQ   For more lights read this forum thread: http://www.bikeforums.net/commuting/1020903-commuter-lights-stay-out-driver-s-eyes-2.html http://swhs.home.xs4all.nl/fiets/tests/verlichting/koplampen/Supernova_e3_pro_stvzo/index_en.html BATTERYS |
NiMH batteries only deliver their full
run times after they have been charged and discharged several times. So
you must plan ahead. Don't expect a new set of batteries to give you full run
time after the first charge.
Lithium Battery Charging
Safe batteries like the Orbtronic have current
flow limiters so that they charge very slowly. Dangerous cells like the
Ultrafire and others that cost much less than the safe batteries do not have
such good protection. They can charge too fast, and to a dangerous voltage
level.
If a lithium battery is under $14 each, start
asking questions. Cheaply made cells sometimes have defects as well, making
them even more likely to burst into flames or explode.
When a lithium cell drains too fast it can get too
hot and suddenly let go of its stored energy all at once, causing a very
dangerous situation.
Packs of cells are charged much more safely with a
programmable balance charger. Unfortunately the packs that are made for
balancing have no discharge protection. So I have to build one that does. The
protection circuit will have to be separated from the batteries by a
switch. Or use a low battery alarm.
Cheap programmable chargers don't have a good
reputation for accuracy, and therefore could be dangerous. And the translation
to English can be almost impossible to understand.
For single cells see Nitecore 'intellichargers' or
something better. And charging cheap cells in a steel pot or box is a very good
way to keep your house from burning down.
Questions should be directed to the Candle Power
forum. I do not know as much as they do.
.jpg)
http://www.hemmingfire.com/news/fullstory.php/aid/1790/Managing_the_lithium__ion__battery_fire_risk.html
what good batteries do:http://www.candlepowerforums.com/vb/showthread.php?393604-Orbtronic-verses-Ultrafire&p=4556302#post4556302
http://www.candlepowerforums.com/vb/showthread.php?94075-Chinese-Lithium-Batteries-Explosion-Danger&highlight=exploding+lithium+batterys
http://www.candlepowerforums.com/vb/forumdisplay.php?107-Smoke-and-Fire-Hot-Cells-and-Close-Calls-The-dangerous-side-of-batteries
http://www.candlepowerforums.com/vb/forumdisplay.php?107-Smoke-and-Fire-Hot-Cells-and-Close-Calls-The-dangerous-side-of-batteries
http://www.candlepowerforums.com/vb/showthread.php?390423-smart-charger-for-18650-packs
Battery packs of
lithium polymer are balanceable by these devices.
But other packs are chargeable with these also.
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A
2200 mAh pack can be charged up to 2.2amps, but I do not recommend
more than .33 amps per cell in series in the pack.
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Charge it right!
Fast charging NiMH cells
http://www.candlepowerforums.com/vb/showthread.php?396207-Fast-charging-NiMH
