[lincpimp]

Adjusting the timing will lower temps a bit, and finding the sweet spot for gearing will make a big difference. I adjusted gearing on the 11xl in my lst 1 tooth at a time and found the sweet spot that lowered temps 10 deg or so. I will say that the neu design is a bit better for heavier vehicles, owning to the addl torque I am sure.

In the muggy I found that too much center diff unloading caused alot of heat in the motor (I am sure that will happen with any design motor), but temps were good with gearing for 45mph or so. I tried both a 10xl and 11xl c50 both on 6s. Both motors were used in the lst and muggy, settled with the 11xl in the muggy and the 10xl in the lst (more gearing adjustment on the lst). I ran MMM and a fp 4500 30c 6s lipo with both setups.

I did switch over to a 1521 1y in the muggy recently. Similar kv to the 11xl, and it does run cooler. I did also notice a 10 deg drop in battery temps, despite having more power across the board (no a huge difference in power, but noticeable), not sure why, but I guess the neu is more efficient? Motor temps are a bit lower with the neu, never gets over 160f. I could get the hacker about 170f, but that was with alot of stop and go, hard accel and braking constantly.