ORIGINAL: flyntruk
Fellow Spit pilots ... To defend our airspace against evil forces ... Up grade your ecs so you can fly 4 cell . I fly a 4c with a 40c discharge and a 9x6 apc prop . We're getting close to 80mph on level passes , fantastic climb outs , just breath taking flying . You'll love it .... TTFN ..
Stock ESC should handle 4cell. How many amps does yours pull? How are you measuring the speed?