So far this summer I've ridden 775 miles.
I've installed my VT monitor in one of the upper battery pieces. I've also put in switches for that and the ignition on the controller up there. Very convenient.
And I've had some time to take out the flashlight.
First off, the 18650 batteries aren't as nice as lipos. The curve isn't as flat. The light will slowly get darker throughout the ride, becoming a little too dark for my liking after maybe 45 minutes to an hour. They won't die until beyond 2 hours tho. Ideally I would have a dc-dc converter and run it off of my pack, which is kinda defeating the purpose of not getting a cycle luminator, but whatever. I can still find some coons and navigate in the dark on foot.
Also, if you're looking for 18650s, I think these are the best ones on dealextreme (from research I don't have them myself) - http://www.dealextreme.com/p/trustfire- ... pack-20392
The cell I have lasted a long time, but from completely drained @2.6V, my charger said it only took back like <600mah, and it's a 2500mah cell. The other times I charged it I got similar results. I think the charger miiiight be wrong..
I took some pictures, but the camera (on my phone) doesn't really do it justice. You need to see it in person,, no camera will do a good enough job.
This is the bike from 200' away, with the light in normal position (pointing down). The streetlights behind the bike are probably 1/2 mile out.
This is just a friend riding past on the street at 11:00.
And this is from the bike on a bike path, after about an hour of runtime. This picture really doesn't do it justice; In person the spot covers the whole path and is much more intense.
At night, with no ambient lighting, on a known bike path or road, I can travel about 30 comfortably. On a dirt road out in the country I can go about 20 without getting a little nervous. The light really does make night riding an option.
Cars now respect me in the dark. I feel safe riding at night.
Get a headlight you won't be disappointed.