Originally Posted by
bpcyclist
Looks like you were moving along at a pretty good clip there. Also appears as though you have a nice, wide beam pattern. That looks terrific, as far as I can tell. What would you say the useful throw of that light is for you in yards or meters?
Yeah, I've been wondering about that myself. It's not an easy question to answer. I can see reflective things, like road signs, hundreds of feet away, but they just float there by themselves. The useful beam that you see in the photo above, I'd guess that's around 25 or 30 meters. It's plenty at moderate speeds. Screaming down an unfamiliar hill in the dark, I have at times wished for a little more when the road turns.
In the photo above, I wasn't going fast at all, I'll guess about 12 mph. The light doesn't appear noticably brighter at higher speeds