I found this picture here in RCU, its from an astro hog build

What do you think about this aileron servo setup compare to:
1) one servo in the middle.
2) Two servos, one inside each wing

I figured its easy for me now to change the wing into this.

Alex

It would be good for mixing flaps and such. Also in case you had a malfunction you could still turn the plane. I have never seen one done like this. Most of the time dual servos are mounted more towards the middle of the wing. I will have to remember this one.

wow that is different way to re-invent the wheel....

That's the easiest way to retrofit an existing plane with torque rods. You gain torque, redundance and can mix in flaperons, plus you don't have servos out in view. The downside is that you still are using torque rods, driving the surface from the end instead of the middle.

I did a conversion like this on a quicke 500 I have. The orginal standard size servo was mounted at 45 degrees to the wing, I replaced it with two mini servos (got an additional 10 in/oz total torque also) It worked out very well. I only ran into one problem, if the throttle was in the stop position, the extra rod protruding from the servo conectin was locking out the left aileron. I found this on a dead stick and as I started to make my final turn, it just wouldn't turn. When the engine flamed out, I cut the throttle and was having a nice aproach until the speed dropped enough that I needed both ailerons to bank it into a turn. I was so taken back I forgot about the rudder.

The quicke 500 has a very tight radio setup and the two small servos helped quite a bit in this case. I'm rebuilding the wing now after another crash and this time I'm going to put the mini's outboard a bit. That will give me additional clearance inside.

Don

Thats how I converted my Cloud Dancer from single to dual servos. It works great..

Ok so its not a bad idea I guess
And if it wont interfere with the throttle that’s what im gonna do.
Thanks

The original Astro Hog just used a single servo where your picture shows 2. This definitely makes it easier to set up the ailerons using a modern computer radio with more than 4 channels.

Jim

I retrofitted a Super Sportster that same way. Worked fine, but made for a cluttered radio compartment.

I built my last plane this same way. I made the decision to go to dual aileron servos after I had already installed the torque rods. I set up the radio for flaperon mixing, but I never tried them out.

Are you going to center the left hand servo? Otherwise you're building in a little differential.

T

Actually that's the Sig kit. The orginal Astro Hog used a single servo with pushrods that went to bell cranks in the wing with rods that went out to the barndoor ailerons.

Hogflyer

It works. I've done it. But only once. I hate torque rods. If I want to convert a wing to dual ailerons, I'll just cut open a bay in the middle and do the work to mount them out there.

But, nothing wrong with the pictured way of doing it. It does work.

This is so outstanding of an idea! my Kadet is headed for a make over.
trumpteb

I had a buddy that did that to a plane, and I was planning on doing it to my 4*40 that I am building. But I mucked up one of the torque rods so I just did the extra work and put the servos out on the wing.

That is how I did the aileron servos in my Hog Bipe, I built it in 2001. Still flying Strong!