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BrianG · 02.20.2009, 01:05 PM

Well, for a given amount of output power, speed (gearing), and battery voltage, the only thing that will increase runtime is a more efficient motor. Both Neus and Medusas are very efficient, so any gains would be minimal I would think - maybe measured in seconds.

So, to gain runtime, I would step up the voltage to 6s lipo and get a motor with a kv around 1800. 6s lipo (22.2v) is pretty close to 6s A123 (19.8v) so you will gain a little there, but the weight advantage of lipo might help more. 6s2p is a pretty heavy battery compared to an equivalent capacity/voltage lipo.

	(#2)
BrianG RC-Monster Admin Offline Posts: 14,609 Join Date: Nov 2005 Location: Des Moines, IA	02.20.2009, 01:05 PM Well, for a given amount of output power, speed (gearing), and battery voltage, the only thing that will increase runtime is a more efficient motor. Both Neus and Medusas are very efficient, so any gains would be minimal I would think - maybe measured in seconds. So, to gain runtime, I would step up the voltage to 6s lipo and get a motor with a kv around 1800. 6s lipo (22.2v) is pretty close to 6s A123 (19.8v) so you will gain a little there, but the weight advantage of lipo might help more. 6s2p is a pretty heavy battery compared to an equivalent capacity/voltage lipo.