The ds811's suck for this plane (My opinion here). I had them on every surface before I knew much about servos. First the rudder would shake when just sitting there.. later after about 20 flights the rudder would shake all over the place in flight too.. replaced it... then after a few more flights the elevators started to shake (a lot) and the ailerons would give a little shake too. Basically i think I wore out the pots b/c I had max deflection and the ds811's only have 47oz of torque at 4.8v (If you run 6 it will have enough torque, but, wear your servos out faster I have been told). I think the 50+ that the directions call for on the elevator and ailerons (90+ on rudder)... I believe really increases if you are trying to get all the throw you can out of the surface.

Some people were telling me to move in on the horn and in on the servo arm.. but.. I want full deflection.. then they say to increase the deflection to 150% up an down on the 8103... talk about something that wears the servo out and.. you take a possibly fast servo and make it slow.. or a slow servo slower... if you think about it.. you increase the servo arm throw 50% and it will make it 50% slower. It was noticably slow.

The ds811's got so bad that I flew by at a medium speed and could see the elevator servos shaking up and down about 3" up and 3" down. I really didn't think it was going to stay in the air. I landed it.. went to the hobby store.. replaced the servos and all is well. Everyone kept telling me that was normal for digital.. and I even tried all the tricks everyone else did to stop the shake.. did not work. After replacing my servos with other servos.. no more probs. It was just the ds811's.. and.. now after thinking about it.. I think they just weren't strong enough for the plane.

I stayed with digital for the rudder.. hs 5925MG ($90). That thing is FAST!! About 30 flights with absolutely 0 shake. The ds811 was shaking before I even took it up.

I ran out of money when the others went out.. got some hs 625MG's for the aileron and elevator ($35-40). I wanted digital, but, think that dual BB, high torque, and decent speed are more important right now.

I have been SO frustrated with the ds811's. I tried everything and I think they just couldn't hold up under the weight of the large surfaces.

Also.. might want to keep and eye on the 537's.. they only have 40 oz of torque. Especially on elevator (I tend to give that a good yank from time to time) if you do aggressive throws.. it is asking for 50+ on the low end of things.

I may sound a little frustrated.. ha.. b/c I am. I am sending the ds811's in for service and am going to use them on a smaller plane. I am a pretty good troubleshooter from years of computer experience and it has proved to help me in this hobby. I have read everything I can get my hands on too.. but.. I have only been in the hobby 1 year so I don't think I know it all... If someone disagrees.. they might be right.. I just know how it was for me. Getting good servos has made it easier if nothing else.