Hi,
I thought the beginner’s page might be a good place to start. I have built a scratch. Low winger and I can't get the aileron throws equal.
The ailerons are controlled by one servo in the centre of the wing and I have used torque rods (professional not home made) .I have checked all lengths and angles and they seem OK. I did have trouble with the servo arm positions but after trying several arms I have found one set that are 90 Deg to the servo! I could play around with the end throws etc but I would prefer setting the ailerons up mechanically true rather than using the electronics to iron out the problem. Is there a sequence that I should follow to sort out the problem?
Any advise gratefully received,
Richard.

Kairos do you have a picture of the aileron control setup, it will make it easier to give advice if we know what the setup looks like.

I am not sure what you mean by the throws aren't equal. Are you saying the travel up is more or less than the travel down? or that with the stick in neutral one aileron is higher than the other? Or one side travels up and down more than the other?
On a computer radio check the throws electronically to make sure that you have equal travel. Make sure trim is neutral.
If all is well and the travel you have is within limits go fly.
However if one side is higher than the other adjust mechanically with the clvises or the servo arm.
good luck

Just a quick suggestion, if you are using torque rods- if you use the e-z links on the ends of the servo arm, with the radio on and centered, you should have no problem centering the ailerons. However with that said I have also found with this type of linkage, it's possible to have unequal throws. Not alot, maybe even not enough to notice.

If you are trying to use z bends on the rod and the servo they could very well be unequal lentghs.

I am with Overboard on this- post us a pic to get a good look at it.

Hi all,
I have now posted one picture of the completed plane and also a couple of shots of the servo/aileron set up. Today I took the plane out and had a fly.It is a bit slow on the rolls but other than that you would not know that the ailerons are set uneven.
The left on full rates ( and this applies to both rates) 5/8 up 3/4 down and it will be reversed on the right hand wing ie the right hand wing will be 3/4 up 5/8 down! I just don't seem to be able to cure the problem. Hope yo can locate the picys OK.
Richard.

Sounds like the servo arm isn't 90 degrees to the pushrods when the transmitter is set to center. Either that, or you have something in the radio setting that is setting your end points not at 100% in both directions.

OK guys, the pics are in his profile gallery
http://www.rcuniverse.com/gallery/ga...memid%3D197017

Mechanicaly they look even but hard to tell. Problem almost has to be electronic. Best recommendation is to get to a flying field with experienced pilots and have them look it over.

If the servo arm is at 90 degrees to the servo, the attachment to the vertical arm of the torque rods is at the same height FROM THE BEND and the vertical arms are in the same plane, exactly parallel to each other, the pushrods are at the same angle to the vertical arms and the radio is centered at zero you should not have a problem. If any one of these is out, you will. Fly the plane.

If you haven't misstated your "Up and Down" figures, then i think Montaque has the right idea.

Looking at how the torque rods are setup, you should get more down than up on BOTH ailerons. In other words, 3/4 down on the left and 5/8 up on the right, OR 3/4 down on the right and 5/8 up on the left.

But you claim that you are getting ) 5/8 up 3/4 down on the left and 3/4 up 5/8 down on the right. The only way this is possible is if the servo is moving more in one direction than the other.

What Tx are you using?

I agree with Minn, the servo horns are set in front of the hinge line which would cause more down than up. the differential should be the same on both sides.

How about removing some of the differential. remove the clevices and spin the horns 180 degrees and hook the clevices back up in the same hole. This should put the horn closer to the hinge line and make the ailerons move without as much differential. Also make sure
the servo is neutral by removing the servo arm, and setting aileron trim to center, then install horn and if you have EPA on the radio set all aileron EPA to 100%. Then take another measurement.

Hi all,
Chris has the answer. I have uploaded another photo showing a mockup of the ailerone linkage hopefully you can see that the horns look more at 90 deg with the ailerons.
In future I will set the horn holes as the point that has to be at 90 Deg to the aileron not the torque rod wire! It seems obvious when when you think about it . I seem to remember a saying about wood and trees. May be the manufacturers of the torque rods could put instructions on the packet for dimbo's.
Thanks once again for all your help again how did we ever manage without the internet ? so many friends when you need them.

Regards,
Richard.

Just be sure that they don't interfere with the fuse former behind the wing asddle