RE: Phoenix 25 & AXI 2808/24 Buzzing
Do you have a watt meeter. Put it in place and check out your motors draw. If anything like my 2808, it wants over 25 amps at full throttle. I have a phoenix 35 on mine, both controller and battery get a little hot when pushed. I keep my props down to 12X 3.8 apc, any more pitch and it does not like it. All my AXI's buzz from the 2204 to 4130 and also my Hacker 20-22L. Its a motor noise in my case. You should be able to isolate the noise on the ground. If its you controller, send it in for exam to Phoenix. They are good people and will tell you if there is a problem. Most can be repaired for a reasonable amount. If you are not sure of your controllers settings, get out the instructions, clear it out and re-program. Strange things do hapen with electrical stuff. Any sign of a problem, run it down, will save you bucks in the long run.