I don't know how to explain this clearly so forgive me if it's confusing. This is one servo for 2 ailerons left and right.
I made them both neutral adjusting horns and linkages. I made sure the servo arm is 90 degrees. Everything lines up perfect but when I push my stick right the ailerons barely move. When I give it left they move quite a bit. In the right directions mind you. Can I adjust the servo with the Tx like the ATV or EPA option so the servo moves more on right turn? What can I do to fix?

Was your servo centered before you attached the servo horn? What radio are you using? When you say it moves right with stick left, do you mean right as in correct or as if the plane would bank to the right?

Disconnect the linkages from the servo, and check if the servo arms move the same distance either side of neutral when you give stick input. If they don't, there may already be something programmed in your transmitter, such as EPA, which is making the servo act differently in each direction. Temporarily plug your aileron servo into, say, the elevator channel to see if it moves the same when you control it with that stick instead.

With the linkages still disconnected, move the ailerons by hand to make sure there's nothing physically stopping movement of one (or both) of them in one direction. Also check if the horns on the ailerons are at right angles, and the same length as each other.

When you set the EPA (end point adjustment), you must set it for each direction. Hold the stick left to set left, then hold right to set right. I'm pretty sure this is your problem....I've done it before myself

Cliff

It would help you to get the correct answer if you told what brand and version of transmitter you are using. Quite a difference between many of them.

Originally Posted by abenn

Disconnect the linkages from the servo, and check if the servo arms move the same distance either side of neutral when you give stick input. If they don't, there may already be something programmed in your transmitter, such as EPA, which is making the servo act differently in each direction. Temporarily plug your aileron servo into, say, the elevator channel to see if it moves the same when you control it with that stick instead.

With the linkages still disconnected, move the ailerons by hand to make sure there's nothing physically stopping movement of one (or both) of them in one direction. Also check if the horns on the ailerons are at right angles, and the same length as each other.

That's exactly what it it was. I thought I cleared them all because everyhting else was fine, Thanks.

When setting up a new plane on a transmitter it is very important
that you clear out all of the previous plane's settings.
Check your manual and see if there is a way to do this automatically.
Trying to do it manually you are apt to miss something.
As complex as the new radios are getting there is so much available
to us to adjust. Little things can make a big difference.

These are words of a catastrophic first flight lesson.

Good Luck,
KW_Counter