For those interested in off-the-shelf lights: I found a beam shot of the Seca 700, which is Light & Motion's new upper-end light. http://acidinmylegs.blogspot.com/200...-you-want.html This might be what I've been looking for, for road riding. Ordered one in the Ultra version (5 hours @ 700 lumens), hope I don't regret it
Update: I found another beamshot at the MTBR forums.
sweet, I love these slalom courses! ...but don't toilet plungers usually have handles?
If that photo is representative of the real-world performance, then it looks pretty good for road riding; the foreground illumination doesn't overpower the mid-range illumination, they're balanced nicely. It also appears to have an acceptable throw distance for an all-around bike light. I would probably still bring along my Dereelight DBS as the long-range "driving light," since it can lay down useable illumination as far out as 400-600 feet on pavement, even with the textured reflector (and considerably further with the smooth reflector). You can't have too much throw for road riding... hitting a porcupine at 45mph can ruin your whole evening
Still waiting for my Seca... but it should be here in a day or two now