I bought a TeknoRC Neu 1515 1Y/F motor on June 3, 2008. This afternoon, I was out in the track running my ST RR when suddenly on the second battery pack, my truck just stopped. I ran to it thinking the MMM ESC gave up on me but I was surprised to see that it wasn't the case. The lights were still on and the ESC was still beeping. When I pickup my truck, I noticed that the tires had some resistance and wasn't free-wheeling when I tried to roll them. I gave it a thorough check and I found out that the motor's rear bearing balls are gone.
Anyway, it sucks being overseas during these times when something breaks. I didn't even attempt to open it up or anything. I just took it out of the truck. I already emailed Tekno so will see what they'll say.
Pictures:
Rear:
Front of motor:
My setup:
Kyosho ST RR
MMM V3
5S 6000mah polyquest 25/50C lipos
5S Neuenergy 5000mah 25/50C lipos
motor brakes