Neu 1515/2.5D or 1512/1.5Y, 2.5D... which motor?

Bruce, right now, I have seven speed controllers and a motor for every one of them. Believe me, it's a disease. LOL.

zpb, I was running all of my equipment in my 8ight T which goes between 10 and 10.5lbs depending on what battery I'm running. The best comparison that I can make that might relay to you my impression of the 2Y's performance is this....

When running my 9XL on 4S geared 14/46, it was faster and more powerful than the 2Y on 5S geared 16/46. I suspect that the performance would have been closer if I had an 18T pinion to run with the 2Y.

When running the 9XL on 4S geared 16/46, the 2Y on 5S geared 16/46 didn't even come close. When I made this comparison, all thoughts of keeping the Neu as it was left my mind and I immediately packed it up and sent it in to Neu.