well, all I can tell you is my experience with a Neu 1515/1.5d and a T8 2650.

motors were used in two different vehicles: a Jammin X1-CRT and an Ofna (or is it Hobao) Hyper 7, cells ranged from 2S to 5S

Here's what I noticed:

Neu 1515/1.5D
Tons of power, reliable and is definitely worth the price I paid for it. Rarely got over 130F. Of course, it would cog a little bit (both with a MMM and a RX8) at low speeds, but sweet mother of everything brushless would it open up a can of monkey stomp at WFO throttle. 5S usage was plain ridiculous; there ain't no way you can use that kinda power on race day. Unless, of course, you plan on going no higher than halfway through the throttle pull on your gun.

4S usage is a little more manageable. Say goodbye to the foams in your tires, though; a couple of wide f'n open throttle pulls down the straight will result in either your rig ending up on it's lid or tires the size of paper plates. Yes, I put duct tape on the inside of the tires. And no, it didn't help.

2S and 3S is where it is most happy...and where you get the best combination of speed and control. And temperature. You can probably get similar or lower temps on a 4S, but only if your name is "Johnny Magic Fingers". I'm talking about SMOOTH throttle control. Like my silk boxers smooth. Or smoother.

Summation: get it if you can afford it. You won't be disappointed.


Tekin Redline T8, 2650kv

Meh, a decent motor with less power than the Neu, but not too bad considering it's a smaller motor. Temps run a little hotter than the Neu, so I wonder about efficiency. Also cogs a little less than the Neu when run without the sensor lead, but seemed to be an absolute slug when the sensor lead was on. Your results may vary. I'm thinking it was a problem with the settings on the RX8 which led to it being such a donkey...again, however you decide to program the timing will more than likely dictate how she'll react/run in the finer points of a race (mid-air correction, cogging coming out of turns, etc)

Summation: Good power, could possibly be less efficient (higher temps) but looks to be sturdily built.



I hope this helps. I may not have covered everything, but please feel free to ask me any questions. :)