Originally Posted by kavic5150
It all depends on what input voltage you plan to use. At the full 3s 12.6v input they are screamingly bright. But at 2s 8.4v they are not quite bright enough IMHO. Maybe try it both ways and see what you think.
The heli guys often use a small brushed esc as a pwm controller to dim the lights. Not sure if your interested as this can add weight.
If you do end up using 3s like I do just be sure not to look directly at the lights close up. They are ok once I get airborne.
Thanks, I'll be using 3s since I have packs laying around for another small plane. I guess your leds are facing outward then, right?