Tell me why my 10XL failed?

my 10XL failed on its first run. I have a crt with 16/62 gearing on 5s (geared for 45mph) my drivetrain is free spinning. It happened about twenty minutes into the run. At 10 minutes i checked temps and they were at 130 F. At 20 minutes the motor would just cog. I picked the wheels off the groung and it would still just cog. Then the motor started smoking. If anyone has a clue why let me know. Should I contact feigao or rcm(where i bought it)?