new to the brushless scene, need advice

[ridinbikes247]

holy craappp...this thing is insane ...couple more questions...
#1-should i get a endbell clamp for ym feigao or i may just make one ?..
#2- whats a high temp for my ESC ? my mamba max hit 85 degrees after 5 minutes of running
#3-when my battery goes dead, does it just keep driving or will it cut off because the low volt thing ive heard people talk about ?