Originally Posted by
chandltp
It's an ICE Sprint.
That would cause a problem with me, unless the beam was narrow enough not to hit the road until it got past my feet. Even the light illuminating my feet is enough to mess with my vision sometimes. On a faster downhill I stop pedaling so I don't see the light on my feet. If my legs were lit up at all that wouldn't work.
Editted to add: The narrow beam helmet light I did try worked pretty well, it just wasn't bright enough. I've already ordered a couple of different 18650 flashlights to try on my helmet, since they were inexpensive and used batteries I already have.. if they don't work I can use them camping and they give me more data points about what might or might not work.
I'm not sure how a dynamo lamp could be mounted on a helmet. And my current dynamo is mounted plenty low on the trike (it's between the cranks in the picture I posted).
If I can find one I'll buy it.
Dang...that thing looks like it sits really low to the ground.
How much clearance is there at it's lowest point? No matter what kind of lamp you use, trying to look over your feet/legs is going to be a problem. The real problem is not the lamp but the bike. Something that sits that low is not going to be very conducive to good visual acuity, particularly when riding at night. Because of the low reflective angle your shadow/depth perception feedback is going to be crap. Because of your stated run time requirement, if you use something that uses batteries you will have to run lower power levels ( unless, you are willing to carry a rather large battery set-up. ) A Gloworm X-1 ( helmet light ) would be nice and easy to adjust but to get it to last all night you would need two of their largest batteries ( and be willing to use the medium mode as much as possible. Heck, with this bike you need as much advance warning of impending obstacles as possible. You need Monster throw. The Xeccon X-12 ( single XM-L2) lamp has the most throw of any single emitter bike lamp I'm aware of. ( I own one ) It is a little heavy though. The Gloworm X-1 is lighter and more adjustable but not as intense.
The other possibility is a dynamo lamp for the helmet. This fella (
Kerry...K-Lite ) builds dynamo light systems down there in Oz-land. He swears that they are better than battery power lights. You might want to send him an email and see what he might be able to come up with. I have one of his ( triple XP-G ) battery lamps and it worked very well before I replaced it with the Gloworm X2. Quite possible that Kerry might have a triple XP-E or XP-E2 lamp with a nice narrow beam pattern all ready to work with a good dynamo and suitable for helmet use. Give him a shout and see what he has.