4 cree bike light
02-29-08, 03:35 PM
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4 cree bike light
Anybody have one of these puppies mounted on their bars? 
Romisen RC-T5 4-Cree
https://www.dealextreme.com/details.dx/sku.10451
680 lumens!
.
Romisen RC-T5 4-Cree
https://www.dealextreme.com/details.dx/sku.10451
680 lumens!
.
02-29-08, 05:26 PM
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02-29-08, 11:35 PM
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02-29-08, 11:46 PM
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Wait till I get the driver and optics for my 6 Cree Q5.
I'm already seeing stars with this test unit I have. https://www.flickr.com/photos/49184877@N00/
I'm already seeing stars with this test unit I have. https://www.flickr.com/photos/49184877@N00/
03-01-08, 12:01 AM
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Wait till I get the driver and optics for my 6 Cree Q5.
I'm already seeing stars with this test unit I have. https://www.flickr.com/photos/49184877@N00/
I'm already seeing stars with this test unit I have. https://www.flickr.com/photos/49184877@N00/
Looks cool though!
03-01-08, 11:33 PM
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The quad cree flashlights seem a little on the big side.. If you want a nice triple cree, look at the elektrolumens Fire-Lion triple cree light, runs on one 18560 battery and gives 500+ lumens for over an hour.. Easy enough to carry a spare battery just in case.. I have bought many flashlights from them and they are a quality product and made to last..
https://elektrolumens.com/FireLion/FireLion-III.html
He also makes a 5 cree drop in for the 3D maglite that puts out close to 1000 lumens.. 2.5 runtime on nimh or 4 hours on alkaline batteries.. Not bad for a 1000 lumen light..
https://elektrolumens.com/DropIn/MT-5.html
https://elektrolumens.com/FireLion/FireLion-III.html
He also makes a 5 cree drop in for the 3D maglite that puts out close to 1000 lumens.. 2.5 runtime on nimh or 4 hours on alkaline batteries.. Not bad for a 1000 lumen light..
https://elektrolumens.com/DropIn/MT-5.html
03-02-08, 02:04 PM
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Anybody have one of these puppies mounted on their bars?
Romisen RC-T5 4-Cree
https://www.dealextreme.com/details.dx/sku.10451
680 lumens!.
Romisen RC-T5 4-Cree
https://www.dealextreme.com/details.dx/sku.10451
680 lumens!
.
__________________
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Two wheels good. Four wheels bad.
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Two wheels good. Four wheels bad.
03-02-08, 04:12 PM
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CRIKEY!!!!!!!
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Anybody have one of these puppies mounted on their bars?
Romisen RC-T5 4-Cree
https://www.dealextreme.com/details.dx/sku.10451
680 lumens!
Romisen RC-T5 4-Cree
https://www.dealextreme.com/details.dx/sku.10451
680 lumens!
03-03-08, 08:05 AM
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03-05-08, 08:02 AM
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According to the specs they're Q4 bin. If they're being driven at their rated 3 watts and the heatsinking keeps the junction temp down to 25deg.C then the LEDs are good for about 880 lumens total. I would allow about 5% loss through the optics, so about 840 lumens effective output.
The other thing is that the Romisen does not drive these four Cree LEDs at 700 mA (or close to 3 watts as you say). They are actually driven at about half that, so cut the 580 lumens number down about 40% to 350 lumens.
Still, its a pretty good value for a 4 Cree light if you can get one (they seem to be out of stock now).
