I'm not sure 100% what you mean but the Blackburn Mars brackets (I'm pretty sure others will too) can be rotated round to allow the led to be fitted upright or horizontalI wish that the manufacturers of rear LED lamps would make a bracket that will allow the lamp to be fitted upright or on it's side. To use the lamp in an upright orientation you can only use a vertical tube such as the seat post.
I've never paid much for rear lights, £20 max.I guess it's down to you get what you pay for! Nicely engineered brackets wouldn't be cost effective with cheap lights.
Try looking for something that has a flexible bracket/strap and another O'ring can extend it if neccesary, unfortunately most of these are emergency rather than main lights.trying to get lights which mount on areo seat posts are a complete nightmare.
With sensible use Smart lights will run underwater for 2 days. One of mine did. That was the result of a failed bracket.Moon Comets can be put in any direction and swivelled up & down, too. Not to mention they're just generally all-round great rears, and only cost £20. Love them.
Also, they don't suck in the wet like Smart lights.
With sensible use Smart lights will run underwater for 2 days. One of mine did. That was the result of a failed bracket.
They're the best (equal) I've come across in the wet - but I do put a smear of silicone grease on the seals, as I do with every electrical item used outdoors.
I've just bought a Blackburn 4, 'cos it was cheaper than a Smart with the same nominal power. I'm hoping its clip & bracket will be better than the Smart ones. (The light I'm replacing had the clip break off when I was taking it off after parking the bike, and I don't think that should happen to a light that's only 4 years old. The business end is still OK though so it may find use as a Christmas decoration.)
Smarts need a smear of silicone grease to keep them watertight - then...My last Smart died after the first wet ride. The one before that snapped off like yours did, as I was taking it off. The Comet has a mount similar to Lezyne's, in that it's a simple rubber strap, and feels quite secure.
Blackburn might be quite good, though - the mount on my Atom SL3.0 cyclometer is decent, but obviously that might not speak for their lights.