Kind of a bad design with the contact points all at the edges and so fragile. After what I'd read on the 9920, I was hesitant to buy it. I'd heard a lot about cogging issues, and terrible customer service. I'm really impressed with the performance of it though. The acceleration is incredible, with very little cogging at low speeds, and the brake/reverse strength is spot on. Runs nice and cool compared to both my MM and 125B as well. Besides, I picked it up used and damaged for $75. Not much to loose on a good ESC. I'm ecstatic.

I think I'll pick up one of those HXT hybrid motors and pair it up with the 125b in the e-revo, run the bk and 8xl in my e-savage, and then I have the MM and 5700 in my Tamiya DF-03. Plenty of fun to go 'round. My poor models that are still on brushed setups never get used, lol.

J.