8ight T conversion

OK guys, another update. I installed the 1512 1.5Y in my 8ight T. What's with that springy rebound noise that the Neu makes when you spin the shaft? It's a bit disconcerting and sounds cheap. Is there something wrong with my motor?

I was also expecting performance that equaled my Feigao XL motors, but I have to say that the 1512 doesn't have nearly the nuts that my 9XL has. I have the Neu geared the same what that I had the 9XL geared (14/46) and it is definitely not showing the ground shredding performance that the 9XL did.

Maybe it just isn't enough motor for the truck. Should have gone with the 1515 I guess.