elevators
 

my piper cub j-3 is a three channel elevators rotor and throttle control my question is how far up should my elavators go when i move the stick forward should they move has far as they do when i pull the stick back cause they dont

RE: elevators
 

They shouldn't go up when you move the stick forward. They should go down. Then go up when you move the stick back towards you. It should be about an inch either way

RE: elevators
 

As mentioned you need to reverse the throw for the elevator to work as designed. As for your control throws, if this is a new plane the movememnt ammounts should be listed in the manual. If they are not listed, 1 inch is a good starting point, however I think I would set up my dual rates for about 50 per cent. Good Luck, Dave

RE: elevators
 

G'day All,
He didn't say that they move up when he pushes forward, just how far should they go.
It depends on the size of the plane, but if they are not even, you probably have not set your elevator servo so that the push rod is 90Deg to the servo arm when at neutral, with trims in the centre, remove the servo arm off the servo, disconnect pushrod, if computer radio, set subtrim to 0, put servo arm back on servo so that it is as close to 90deg to the pushrod as possible, then adjust subtrim until it is 90deg, hook up pushrod to servo arm, & make sure elevator is at neutral, ie, straight inline with horizontal stab, that is the mechanical side set, now go into end point or ATV or servo volumn adjustment, depending on radio brand, & adjust so up & down are the same, usually 100% both ways.
Seems like a lot, but when you learn how to do this you will be able to do the same for every plane you ever own. It's the same setup for ailerons, rudder, & elevator, to get even movement both ways.

RE: elevators
 

Alan,
Oh yes he did.

Regards,
doubledee

RE: elevators
 

Check to make sure that the control horn where the clevis attaches is at the center line. If it is ahead or behind the center line (center line--where the elevator connects to the stab) it will cause the elevator to travel a different distance depend if it is in front or behind the center line.

RE: elevators
 

Both the elevators and rudder should move the same amount each direction.
They should be straight back when the stick is centered also.
The amount they should move depends on the size of the airplane. That amount is best found in the assembly instructions. If you don't have instructions, we need to know what ARF or kit, or at least how large the model is. What kit? What wingspan? What engine? something like that..............

RE: elevators
 

Depending also on the tx. May have the end point trim set to not travel as far one direction.

RE: elevators
 

This is strange! I have a 40 size glow trainer. The elevator only has 1/4" of throw and it flips quick. Response is not even a problem. I would have probably recommended a lesser throw than 1" for a beginner. I know he didn't say he was a beginner but looking at the post question it does not seem he has alot of experience with planes. I maybe wrong, i have been before. What do you think?

RE: elevators
 

Here is a new concept for you, the amount of elevator travel depends on the balance.

RE: elevators
 

Well, he did, but he didn't intend to. Put a question mark after "how far up should my elavators (sic) go", and everything becomes a lot clearer.