I ran them for awhile. If you waterproof them they will run fine on a light p-open setup(36mm motor like a leopard 3660 2550kv(what i ran)). but if it gets wet it will either go poof or will loose signal from the reciever and won't ever re-engage. i was running a 200. i also tried a 100 in a pltd rigger and it lasted all of about 3 races and just got overly hot and quit.