Which is better? (mega/feigao)

[DrKnow65]

Don't know about the brushed cleaner? I use a shop vac (never compressed air, it pushes stuff into the bearings). Once in a while take the motor out and make sure it spins free, you can get bad bearings or iron filings stuck on the rotor (like putting a magnet in the sand, you pick up stuff).

You ran it long enough to get new temps yet?

[speed demon]

Nope will have them tomorrow. I have a ton of cycles on my lipo and will be getting a new one in the near future. I've had such great luck with the milehighrc pack that I don't want to get anything else but I've be considering a 4S and he doesn't have them in 4000mah. Doing the math the motor is a max rpm of 44k and a 4s will be over that but I've read here before that a motor normally doesn't reach its max rpm becaues of drag and what not. Also the MM has a setting for a 4S lipo cutoff...does that mean it can handle it? I ordered a fan and terminals today so it should be in next week. The fan is 40mm square but that's the fan size that mounted great. It's 5v and pushes 6cfm. Should that be enought to cool it?