Question on Elevator
 

When going into a loop or inverting the plane using the elevator, the plane seems to roll. So, when the plane comes out inverted it is not paralell to the ground, it is at a 45 degree angle or less. I think may be putting some aileron, this is inadvertant. Is there anyway to minimize the aileron deflection so I can eliminate some of this roll on a standard loop? I hope you guys understnad what I am talking about!

RE: Question on Elevator
 

DO you have split elevators? If so, then the throw may be more in one direction on one half compared to the other half.

RE: Question on Elevator
 

If both elevators are on a single servo linked by a metal rod, the ends of the rod may need bending 'til they are both level. I experienced this on my last plane during the building process, easy to correct then. Since your already flying it, set it up level and look at the elevators from behind to see if they are both on the same level.

Luke[8D]

RE: Question on Elevator
 

You can opent he back cover of the TX. There is a little screw on the stick gimbal for adjusting the spring tension on the stick. Try increasing the tension on the aileron direction and maybe decresing tension a little on the elevator. that will reduce your tendancy to input aileron with elevator.

I have the opposite tendancy... I tend to input elevator with aileron... and I tightened the elevator and loosened the aileron... got rid of 90% of my inadvertant elevator inputs. (I have no problem keeping from inputing aileron with elevator.)


It is also possible that you are inputting EXCESS elevator. this can lead to a high speed stall, and a wing will "drop" That can give your described appx 45 deg roll in a loop. (more often it gives a snap-roll out of the loop at the top...)

Another potential problem is not enterng the loop level in the first place. It may LOOK level to you, but I bet it always seems to roll outward. If it does that from both directions... your idea of level has the inboard wing high.

RE: Question on Elevator
 

I would assume that you would make the aileron tighter than the elevator.

RE: Question on Elevator
 

It's possible you have a heavy wing and have trimmed the ailerons to compensate in normal flight. Outside maneuvers will cause the aircraft to roll due to the aileron trim. This is often the case with engines mounted horizontally. It's hard to believe the engine head would add very much weight to on side of the airplane, but it will. Balance the plane laterally with the engine installed. Don't just balance the wing.

RE: Question on Elevator
 

I also forgot to mention, a warped wing, aileron, or elevator will cause this problem. Use an incidence meter if you can. Be very accurate and check wings and tail surfaces.

RE: Question on Elevator
 

How do I balance laterally? If it is what I think, I may have a tough time as it is only me in the apartment..

RE: Question on Elevator
 

Support the plane by the tailwheel and engine shaft. Add weight to the light wing.

RE: Question on Elevator
 

Here's an articl about balancing. Scroll down to the part that covers "Lateral Balancing".

And don't worry, it's easy to do:

http://www.rcuniverse.com/magazine/a...?article_id=84

RE: Question on Elevator
 

This could also be caused by incorrect aileron/rudder trim. If you have both ailerons and rudder, you may have trimmed the wrong one to correct a minor left or right turn. Try retrimming by slightly trimming the ailerons in one direction and compensating by trimming the rudder in the opposite direction. This miss trimming is a common error on many planes and goes unrecognized because, in normal flight, it is not evident.

RE: Question on Elevator
 

I laterally balance all of my planes, but even in a loop, if you have a cross wind, the wing can have a tendency to start rolling. When this happens, I just add a little aeleron to correct. It takes a little practice, but is very doable.