Originally Posted by
JatoTheRipper
I don't ever see a need for anything more than 3S in a crawler. It's a crawler not a rock racer or a rock jumper. It is my opinion that if you need more than 3S in a crawler you are doing something wrong or you're not really crawling.
Scale class 3 wraith, running a 40t Torquemaster. 4s is smoother, more powerful and more efficient moving a near 3kg 2.2 beast. Only geared 11/60 so it's still fairly slow, but has all the pep you could want for clearing small gaps.
Plenty of 2.2 pro and sporty guys run 4s these days too for similar reasons. If I ever change my pro motors I'll go up a coupe turns and run 4s instead of 3s.