Aileron Problem
 

Gentlemen, I have a problem. Appreciate your help. First R/C plane. Sig Liberty Sport Bipe. Will not fly until training.
When moving Aileron control on Box to the left the response is aileron on right moves down. AILERON on left NO movement.
When moving lever to right NO movement on right but aileron on left goes down. What did I do wrong??

RE: Aileron Problem
 

first what radio do you have,did you center your servos when you installed them in the wing,when you move the sticks to either side does one side buzz,if it is a computer radio was it programed for another plane before you installed it into this plane,would be my first questions.
if the programming is off then delete the previous programming and start over.
if your servos are not centered then they will usualy have a buzzing sound when they have bottomed out to the one side thats not moving,centering the servos is important, before setting up a new plane they should have equal movement in both directions without binding.

RE: Aileron Problem
 

chances are you have a computer radio and the programing is incorrect..by the way you didn't say if you were using a y harness, nor whether it's a 2 or 4 servo set up....

RE: Aileron Problem
 

Turn off flapperons.

RE: Aileron Problem
 

Hi bigtim, thanks for reply on aileron question. I have fUTABA 4ex-fm radio. Servos have been centered. No buzz on stick movement. New radio package , never used. Wheel on aileron servo has both push rod wires in top position of servo. Should one be in a high spot and one in a low spot on wheel? New to R/C. First one. Thanks st.kliment

RE: Aileron Problem
 

Hi jetmech05, Thanks for your reply. I'm new to this . First R/C. Is the Y harness an extension of the servo wire to the resistor? I have a 4 servo set up. New computer radio Futaba 4EX-FM. Thanks st.kliment

RE: Aileron Problem
 

Hi broke n bummin, Thanks for your reply to my aileron question. I'm new to this. First R/C. How do I turn off the flapperons?
I understand it is 2 or more controls mechanically or electronically mixed to allow them to perform the function of both flaps. Is that correct? Thanks st.kliment

RE: Aileron Problem
 

I'd suggest the first step is to remove the radio from the Liberty Sport, and hang the plane up for a while. It is not anything close to a trainer, and if it is set up with ailerons on the lower wing only, and the stock length, then it'll be sluggish in roll. Keep it for after you learn how to fly, and can enjoy and appreciate it.

That said, did you build it per the plans and use the bellcranks out on the wings and the single servo in the center of the wing, or set it up with dual servo's and a y-harness? If you used the bellcranks, then the aileron pushrods that run to the bellcranks should be soldered together to make one long rod, with an additional small part that hooks up to the servo arm. It almost sounds like you may have the bellcranks hooked up incorrectly. Can you supply a picture of the installation?

I would suggest you look into getting a primary trainer first ([link=http://www.rcuniverse.com/forum/m_4537845/tm.htm]look at the list RCKen put together for some insight on what trainers are available)[/link], put your radio in that and learn to fly it. The Liberty Sport is too nice a plane to tear up learning to fly, plus you'll want to have a radio with dual rates for the Liberty Sport - life will be a lot nicer and the plane easier to set up with one. You'll be way ahead this way.

Hogflyer

RE: Aileron Problem
 

Resistor? Could you mean reciever? A Y-cable is used when both aileron servos are connected to a single port(channel) of the reciever.
If you have a 4 servo setup that should mean:
1- ailerons
2- throttle
3- elevator
4- rudder
OR do you mean you have 4 servos in the wings for ailerons, for a total of 7 servos in the plane. Your description is vague.

IF you had only one aileron servo (per wing) the operation you describe would be impossible under any possible condition.

RE: Aileron Problem
 

Hi hogflyer, Thanks for the response to aileron problem. Wouldn't fly until trained. In garage. Built per plans. bellcranks on wings. Single servo in center of wing. For my knowledge what would soldering both rods together accomplish? Why wouldn't manufacturer tell you to do this initially? Sorry can't supply picture. Thanks st.kliment

RE: Aileron Problem
 

Hi bruce88123, Thanks for your response to my aileron question. You are correct. Meant to say receiver. Have 4 servo set up as you describe. One servo with 2 rods in wings for ailerons. Thanks st.kliment

RE: Aileron Problem
 

what happens when you remove the servo arm from the servo and turn it manually? do you have both push rods hooked to the servo arm on the same side of the arm? or is one rod to the top of the arm and the other to the bottom of the arm?
I'm having a hard time understanding how this can happen if there is no binding anywhere

RE: Aileron Problem
 

You've got way too much plane for a beginner and you didn't center the servos before installing the linkage. Or, you have the endpoints set improperly. No way a single aileron servo won't cross right to left if it was centered properly and the sub-trims and endpoints are centered.

Get help at a club. This plane will not survive the maiden flight. Initial trim is very important.

RE: Aileron Problem
 

Hi jetmech05, The push rods are on opposite sides. One hole off the center hole on top of the servo wheel. If I wanted to operate the servo wheel manually could I just turn it with my hand? What if it binds and I can't get it to turn? I don't want to force it and damage something. The problem doing that is the servo is hard to get to while everything is assembled. Taking everything apart would be a pain. As to your question about 1 push rod being on top of the servo and the other on the bottom would that be good or bad. Why? I went to EPA and upped the throw on the aileron servo and that seemed to help.
As you can see I am a novice at this. First R/C at 78. It would be nice to have your expertise.
By the way is there a "Y" fitting for the gas line tubing? Where to get and special name if any.
Thanks for your help. Can't get around very well. Also no more driving. Regards st.kliment

RE: Aileron Problem
 

Thanks CharlieP for your response. Not flying until trained. At 78 who knows when that will be. I adjusted the end points on the ailerons. Seems to work better. I have a lot of learning to get this down pat. Limited in getting around. Also no more driving. Got to roll with the punch. Thanks for the interest. st.kliment

RE: Aileron Problem
 

St. Kliment, Try to locate a club in your area and call them. Iam sure if you could talk to some of the members they could come by to look at your set-up and help you. Good luck with your plane. Wayne M.

RE: Aileron Problem
 

did you use those EZ connecters? if you did, they could be loose. when the servo is not moving, can you move the aileron that isn't moving? if you can, then there's a loose connection somewhere and you'd have to disassemble it to find out what it is. with a 4 servo setup, can't imagine that you'd be able to move one aileron and not another unless something is loose inside.

good luck!

RE: Aileron Problem
 

Because this is NOT DESIGNED for a beginner.... it is for later on down the road when the builder/flyer has more experience....
manulas get more sparse becuase experience is assumed... I've had airplanes where the manual is one piece of paper///

Also, you keep saying, won't fly until trained...

What airplane will you be using for training??

RE: Aileron Problem
 

I think this may help you.

RE: Aileron Problem
 

Cashint, he described earlier that he had a bellcrank setup which makes more sense for his plane. those pics might not help him and could just make it worse.

Kliment, our your pushrods firmly locked onto the servo arms, or do they move/slide when the controls are moved one way. This happened to me and limited the movement on one aileron turning one way and the other turning the opposite way.

Please explain what your aileron setup looks like in more depth, this could help a lot.

The aileron slip is my guess, but im still a beginner.

Just a guess,
Farr301

RE: Aileron Problem
 

Hi waynem, Thanks for your response to my aileron problem. Will take your suggestion. Best Regards. st.kliment

RE: Aileron Problem
 

Hi forestroke, Got your advice for my aileron problem. Thanks for the response. No did not use E-Z connectors. This is a kit that I bought in 1978. All the great things you have around today to simplify model airplane building wasn't around then. I built the plane with was in the kit. Wood pushrods with steel extensions to the clevises. Should have used the new stuff. I adjusted the EPA to a higher throw and it seems to make a difference. First R/C. Best Regards. st.kliment

RE: Aileron Problem
 

Hi exeter acres, Thanks for the response to my aileron question. Bought in 78. Didn't know what was involved at the time. Friend at work sold it to me. Haven't looked into trainer yet. At 79 don't get along to well. Best Regards. st.kliment

RE: Aileron Problem
 

Hi chashint, Got your photos. Made enlarged copies. I don't know if its going to help me but every little bit of knowledge helps somewhere along the line. This is a SIG Liberty Sport Bipe. The servo is set in the diehedral section between the two lower wings which is set into the bottom of the fuselage. Hard to get to without removing a lot of stuff. First R/C. I set the EPA at a higher throw and it seemed to have helped. I'll get there. Thanks again. Nothing like pictures to help. Best Regards. st.kliment

RE: Aileron Problem
 

Hi farr301, Thanks for your response. As the gentlemen said to me when he saw the hookup of the pushrods to the servo don't fly this baby. Told me I needed to use E-Z Connectors for stronger connection. Which seems to make sense with your remark about slippage. I set the plane up per instuctions in a kit I bought in 78. For a begineer that was a good response by you .
The pushrods are steel and are bent at a 90 degree angle and set into the servo wheel.
Best Regards. st.kliment