[bdebde]

Originally Posted by BL_RV0

^ Sounds like a great setup. I'd go with a 4s 4300 25c or a 4s 3900 25c, because they're on sale. Link:
http://www.neumotors.com/2008/store/page6/page6.html

Originally Posted by MSP

What is the ideal gearing with either of the two motors suggested? (1515 and 1512)


What are the runtime times like from 3900 to 4300 batteries? I am definiately interested in the longest, most efficient runtimes from the batteries.

I would say no LESS than the 4300 4s. I have been using them a while now, I could get close to 20 min maybe (17-18 more likely) when they were new; now with many cycles on them, I have a hard time getting 15 min if I drive too hard. I also don't like to run to the LVC, harder on the batts. I have since gone to the 4900 4s batts for the extra head room. I use a lehner 1930/8 (2613kv) or 1940/7 (2249kv) in a 7.6lb buggy (now 7.8lb with bigger batt and motor) geared 37-40mph ("ideal gearing"). Run time with either motor is nearly identical, maybe a minute less at most with the bigger motor.