my aileron servos are buzzing whats the problem?
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Try tapping the ailerons up and down. If the buzzing stops, don't worry about it - the engine vibration will stop it.

Also, if they are digital servos don't worry about it either. It's normal for digitals to buzz.

Ken

There is a little binding of the aileron hinges going on. This is putting pressure on the aileron servo, not allowing it to find what it feels is center. It's also a good idea to apply full aileron or other control surface to see if binding is occuring then. I agree with Minnflyer and since we generally don't fly with full control surface deflection applied. binding at the extremes here is maybe not a big deal either. Still (for me personally) I will try to eliminate as much binding as possible.

Also, check the following:
Generally speaking the servos are not positioned in its natural center position anymore because your radio's trim is doing the job. (They are into an imaginary central position, but the real fact is that they are working all the time to be positioned at the "center" that the transmitter is demanding.
That fact, tends to drain your battery faster than when your servos are at their "natural center" so a good thing to do is to go and fly, trim your plane, see how the surfaces are, measure the offset and then set up your servos so the natural center will be the result of the trimmed plane, you could save some battery life and of course the life of your servos. Also take note that Digital servos want to center their selves much more times than standard servos so they will drain a lot of battery if you are hearing the buzz.
There is other reason, it also happens when the servo is trying to go to the center but there is a force in the arm that does not let it do that task, so you have to check the rod to be free from any extra force.

I didn't realize there was a "natural center" for a servo, is there a way to find it so you could adjust everything else to accomodate it?

Set all of your radio trims and subtrims to zero (neutral), and the plug all your servos into the receiver and power it up. All the servos will go to their center or neutral point. Then adjust the servo arms, control arms, and control linkages to get the neutral position on your control surfaces with the servos at their neutral position.

Another way to get your servos to their neutral or center position is to use a servo cycler/tester like this one:

http://www.york-electronics.com

Netural and center can be two different things. I consider netural to be when the servo is not driving in one direction or the other, and Center to be where the servo throw in mid point between the extreames. I know that the term netural is used as center, but if your throttle is set somewhere, the servo moves to match the stick and at that point it goes into netural, not driving in either direction. All the other servos will do likewise, but other than hands off the stick or jamed to full travel on the stick, the servo is generally following the stick movements. When the stick is centered, the servo is centered, and in netural at that point. No mater what the trims are set at. You trim to find center.

This is just my way of keeping things straight in my head.

Don

Is it a new plane? I've had a few with new, stiff CA hinges that buzzed but it stopped when the hinges loosened up after a few flights.

Ok Thanks, this is what I do anyway, I though he meant something else.