raimondi

I am building a QQ 101 inch yak, and I am planing in to usisng a single JR 8711 in the wings, any sugestions or has anybody done this in this airplane????????

exeter_acres

My Feedback: (2)

I do not have that plane....

but the torque of that servo would be more than enough...
my only concern (concern may not be the best word.......just something to check and keep an eye on) is the the aileron itself.... make sure that the aileron is stiff and solid enough that it wouldn't flex with only one servo

RCAddiction

My Feedback: (87)

Per Wayne Geffon, who had the same setup on his 35% RadioCraft, I used single 8611's (less powerful than the 8711) on the ailerons, elevators, and rudder of my RadioCraft Extra, which was 106" 3D/IMAC 27lb plane. The plane was originally setup with dual 8411's everywhere. Pull those all out and replaced with the single 8611's. Excellent performance.

BaldEagel

I have often thought myself how much power do I rearly need on the control surfaces, if you are an all out 3D pilot, then you possibly do need all the power that two 8711's supply, but if you are thinking about one servo, this may not give the aileron enough support outboard of the one linkage as exeter acres says and cause some twinsting in the surface, why not use two less powerfull digital servo's, you could get two for the same price as one 8711 and then you would have more support for the aileron, just a suggestion.

Mike

camss69

My Feedback: (46)

QQ himself said he does not recommend that setup. He said run the two servos in each wing.

RCAddiction

My Feedback: (87)

It absolutely depends on the stiffness of the aileron structure as to whether you can make do with a single servo. The Radiocraft Extra had pretty stout ailerons. However, if Quique says use 2 for his plane, then I'd follow his recommendation and use 2. He tends to build very light structures. The plane in my Avatar is a 80" Jerry's Big Boy that only weighs 10.5 lbs. The ailerons are very lightweight, basically a bunch of 1/4 inch sticks that flex quite easily and is designed for 2 servos. So, it's got (2) 5475's per side.

bodywerks

My Feedback: (4)

you can try just a single servo but be prepared for the consequences that will also void your warranty.