The Wall
08-06-2002, 10:21 AM
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The Wall
I'm starting to try 3D stuff and when I try to do a wall, the plane snaps if I pull elevator too hard. If I pull elevator slower, It just looks like I'm pulling vertical. The plane I'm using is the GP G 202 with a SG 3250 18 8 prop and 42 degrees of elevator and 30 degrees of aileron. The plane isn't nose heavy either. Any input would be greatly appreciated.
08-06-2002, 05:23 PM
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Flying Hog,
I have the same plane GP Giles 202 1/4 scale. I was able to do the wall without snapping when I had it set too tail heavy, I was balancing at 7-3/4. I just changed my CG to 7-3/16 and haven't tested it yet. Also I think the weight of the plane may have some effect to this manuever. Mine weights 11.6lbs.
F16FxR4real,
The way to do the wall is to fly level at about 1/3 speed or less depending on engine, then immediately pull the elevator on high rates and the plane should transition to a vertical position and it stops flying forward just like it hit a wall. Then it's up to you after that, you can hover, torque roll or just full throttle up.
I have the same plane GP Giles 202 1/4 scale. I was able to do the wall without snapping when I had it set too tail heavy, I was balancing at 7-3/4. I just changed my CG to 7-3/16 and haven't tested it yet. Also I think the weight of the plane may have some effect to this manuever. Mine weights 11.6lbs.
F16FxR4real,
The way to do the wall is to fly level at about 1/3 speed or less depending on engine, then immediately pull the elevator on high rates and the plane should transition to a vertical position and it stops flying forward just like it hit a wall. Then it's up to you after that, you can hover, torque roll or just full throttle up.
08-07-2002, 02:10 AM
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Wall
The trick to a wall is to get the airplane to pass through flying on the wing to 3-D or vectored thrust mode immediately.
The fact that the plane stalls one wing and snaps indicates that your problem is that you're stalling *only* one wing. You need them both to stop flying at the same time.
Some things to try :
42 degrees of throw isn't enough for all plane types. Try increasing your throw. I have a cap that will do the same thing with less than 55 degrees of throw.
Your elevator servo(s) may be too slow to get the plane to transition abruptly enough from flying to vectoring. Try faster servos.
Try doing the wall inverted. The rudder will remain more effective at stabilizing the plane inverted. You also might have more elevator throw inverted.
Have you verified that your plane is properly laterally balanced and that both elevator halves move the same amount?
Moving your CG rearward increases the effectiveness of the elevator servos and can also help you get the plane to pitch both wings past stalled quickly enough.
The fact that the plane stalls one wing and snaps indicates that your problem is that you're stalling *only* one wing. You need them both to stop flying at the same time.
Some things to try :
42 degrees of throw isn't enough for all plane types. Try increasing your throw. I have a cap that will do the same thing with less than 55 degrees of throw.
Your elevator servo(s) may be too slow to get the plane to transition abruptly enough from flying to vectoring. Try faster servos.
Try doing the wall inverted. The rudder will remain more effective at stabilizing the plane inverted. You also might have more elevator throw inverted.
Have you verified that your plane is properly laterally balanced and that both elevator halves move the same amount?
Moving your CG rearward increases the effectiveness of the elevator servos and can also help you get the plane to pitch both wings past stalled quickly enough.
08-07-2002, 10:14 AM
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Barryb... I'll try it inverted I can't get any more up than 41 but I do get more down. I have Futaba 9201's in the tail. Is that enough? Both elevators do move equally and I'm moving the CG now. Going to try it out this afternoon.
Shortman, Is that allot?
Shortman, Is that allot?
