I have a couple of old 3906's that I would like to upgrade to brushless, but I don't want anything more powerful than stock. I'm afraid if I put anything over-the-top into it, I'll start breaking parts. I want the long run times and efficiency of BL+Lipo, but I'm happy with the speed and power of the stock setup.
Can anyone recommend an inexpensive BL setup? I'm thinking around an 1800 kV motor and an 80-120A ESC. Any ideas?