Hyper 9E

[Cain]

i was told that if the seals are red, its the new seals, if they are black, its the old seals.

as for diff comparison sizes, the box has a picture on the box comparing the two, I think I posted a pic of that comparing I am assuming the previous standard size diffs versus the new small diffs.

as for gearing, on a 2200kv motor, the 14T pinion on 4S assuming a 4.5in tire diameter (ala crimefighters) from the RC Calculation website gives a speed of about 40mph. Usually you gear for that speed to start with in general.

I would say if you want mid 40s, go with a 16T pinion

http://scriptasylum.com/rc_speed/_top_speed.html

too bad the coupon for answerrcusa site doesn't work for anything under $40. 20% off would be nice.

[FG101C]

Apparently you can switch the diffs, i.e. side that the ring gear is on. This I would see as beneficial because with the motor on the right side, to spin in the right direction the torque of the motor is going to the right. It would be better to have the motor torque into the center of the chassis, like the nitro cars do. The gears are not spiral cut, and in this interview Tim Bump says they switched the diffs when running sensored motors. I will be doing this and testing it out.

http://www.ustream.tv/recorded/1502216