I picked up a Spark ST6-500CW headlamp yesterday with visions of using it as a self-contained bike light (no wires, no remote battery pack). The headlamp uses a Cree XML and is powered by a single 18650 battery.
LED: Cree CW XM-L T6
Super: 500lm 1.4hours (Only triggered by quick double click)
Max: 320lm 2.5hours
Med1: 150lm 8hours
Med: 50lm 28hours
Low: 8lm 8days
I thought about how I might mount the light to my helmet, rummaged around through my parts box and found my Magicshine helmet mount from geoman. Spent about 10 minutes cutting and shaping the mount with a dremel so that the Spark sits nice and snug. Drilled 4 holes in the mount, threaded through 2 zip ties to hold down the Spark and was all done!
Turned out much better than I thought it would.
Took it out for a spin.
Worked very nicely. To be honest, I'm a bit surprised at how effective the 320 lumens really is. The difference in the 500 lumen "super" mode is barely perceptible to my eyes.
Total weight with light, battery, and helmet mount is only 142 grams. With the light mounted to the top of my helmet, it feels nicely balanced. I won't say it is unnoticeable, but I could ride for a long time with this light on my helmet.
I can easily change batteries while the light is still mounted to the helmet.
I think this would make a great endurance light and a great commuter light. I plan to use this light in conjunction with my Supernova E3 Triple.
The only thing that bums me out: the "super" mode will drop back down to max after 5 minutes. A crude attempt at thermal management and probably unnecessary when used on a moving bike.
Results 1 to 17 of 17
Check out the hottest mountain bike products from these brands!
See All Interbike Coverage - Click Here »