This evening I used it again and it remained on all the time. I also changed to the smaller rubber ring for the mount, and the light didn't slip even on bumpy road. Thanks again.
Originally Posted by
gsa103
800lm is about typical for those lights at full brightness. If you look up most reviews where they measure they usually come up in that range. 800lm is still very bright for a $20 light. Beam pattern is an issue with all bike lights, especially the cheaper ones. A flashlight tends to have too much of a center hot-spot, while these tend to throw light everywhere. Ideally, you want the goldilocks beam of not too much spread, but still enough to illuminate peripheral areas.
I totally agree with you. I need the light to have a distinctive long beam so that drivers coming from the side can be alerted in advance (they'll see the light before they see me). Another function of long beam is to scare away pedestrians
. FYI the flashlight I have is
this one (I like that it can run on 3xAAs).