midstar 40: seperate aileron servos??
 

I am Building a SIG MIDSTAR 40.......I have heard that seperate aileron servos are nice to have, but I do not have a radio that is mix capable (4 channel futaba). Would I receieve any substantial benefit from doing this with my plane?

Dietrichaf

midstar 40: seperate aileron servos??
 

You would have redundancy (sp) if one quit the other should still work, giving you at least a bit of control.
You would also add to weight,battery drain, and just one more electric componet to not work right.

2 Servos are not needed on a 40 size plane. Most sport 60's could go with one also, however the trend has been 2 servos mainly for the use of flaperons, but if you cannot mix them in then I personally don't think it would be worth it. Unless you are planning on upgrading your radio.

midstar 40: seperate aileron servos??
 

Agree with CHassan, if you are going with a transmitter with mixing then use two,if not then putting the extra servo in to me is a waste of time and money,another option is to drill holes through the ribs and install a pull string for future installation if needed,then it,s not that much work.I've owned two Midstars,and talked four friends into the Midstar,great flying plane,think they are better than the 4*'s.HAVE FUN.

midstar 40: seperate aileron servos??
 

I disagree. I built my Mid-star with only one servo because I only had a 4 channel, non-computer radio at the time. But I later got a computer radio and regretted NOT putting servos in the wings.

It doesn't add that much weight or battery drain and does improve responsivness, reduces chance for flutter, opens up options for the future, etc..

BTW, either way it is a great flying plane. If you do go with only one servo, make sure that control rod is glued into the aileron well. I have seen quite a few setups done this way work themselves loose over time.

midstar 40: seperate aileron servos??
 

You can always join the two servos with a Y-harness. You do not really need a radio with mixing. I had a Sig midstar, I used one aileron servo, and that worked well. If you do put two in, make sure you have someway of accsessing the servos, such as a hatch.

midstar 40: seperate aileron servos??
 

I second what Corsair said. The use of a computer radio has nothing to do with it. Use two servos and a Y-harness.

midstar 40: seperate aileron servos??
 

And I say that a midstar 40** NEEDS two servos like a Ford Escort NEEDS a spoiler.
(**or for that matter, most 40 - 60 size planes)

Two servos in the wing is the current trend.

Flapperons can cause tip stall.

I would rather use 1 servo for inboard flaps, and 1 for outboard ailerons, than to use 1 for each aileron.

But then, I never did do "Trendy"

If you want to hook two servos up to a "Y" cord, have at it. But I guarantee that the only difference you'll notice is that when the plane is coming at you, you can see two ugly black things hanging down under your wing.

Oh yea, and your servos won't stay as clean.

midstar 40: seperate aileron servos??
 

I'm with MinnFlyer on this one.

Two aileron servos on a Midstar is overkill and unnecessary.

They fly just fine with only one servo (and the one you have stays clean, too! LOL)

http://home.internetcds.com/~barbados/wing.jpg

DON'T NEED TWO SERVOS
 

Hello Guys:

I built a Mid Star 40. I put wheel pantson it. I also put a MVVS 40 with the tuned muffler( I didn't know any better at the time, MVVS's just came out when I bought it). I put only one servo in the wing. When I say this plane is hot I mean HOT! You have to hold opposite aileron when you break ground from the torque. I even have it on a Futaba super seven computer radio. I never saw or felt the need for 2 servo's. Nor did the 3 club hot sticks that had to have a go at it with the plane. Make sure all the control surfaces are tight with your linkages and fly the hell out of it.

2 Aileron Servos...maybe, maybe not...
 

...It all depends on the plane and what type of flying you like to do.

For a SIG Midstar 40 or 4 Star 40, or the like, with standard control surfaces and throws...1 will easily do it. Step up to a SIG Somethin' EXTRA, or the like...you'd better go with two. I personally don't like aileron torque rods...there is too much that can go wrong is you like to 'wring out' a plane like I do. At the very least if you choose to use them, make SURE the torque rods are glued/secured VERY well. Also, as mentioned, the end of the torque rod that goes into the control surface is another potential trouble spot. I always like to juice the hole in the aileron with some thin CA to stiffen up the wood before gluing things together with epoxy.

Something else to consider is just how much torque DO you need for a given control surface. A couple years ago there was a story in RCM that dealt with servo loads. It had to do with speed, control surface area and angle of deflection. A good read if you are wanting to be sure about your servo needs.