What is a Slipperential?

[jamesban]

ok. I removed the slipperential because with 3 springs tightened all the way down it still slipped too much. I got two new Life batteries and made a new battery harness. Its running great now. No overheating on the wires. Maybe my old batteries were just going bad? Will do flips from a standstill and cogs slightly on starting. Gonna try changing the startup setting to low on the ESC and see if it helps with the slight cogging and to control flipping and wheelies when it takes off. Other than that this thing is a blast.