Avistar likes to balloon
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Avistar likes to balloon
I have been having fun with a used Avistar lately. It's a fun little airplane with a great inverted flatspin. The only thing I really don't like about it is that at high speeds when you give elevator it likes to "balloon" up to a very high AOA very quickly. While this makes for snap roll I am worried that any engine bigger than the old worn out LA 40 on it will snap the wings in half if I give it too much elevator at speed.
Is this just a semi-symmetrical trainer trait or is there something I can do to prevent the "balloon."
Is this just a semi-symmetrical trainer trait or is there something I can do to prevent the "balloon."
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RE: Avistar likes to balloon
If it's semi-symmetrical it really shouldn't balloon too badly.
It COULD be that the wing is not sedure enough, and when you pull up at high speed, the wing lifts at the LE which will change the incidence for a second resulting in a bad balloon.
Try adding a few more rubberbands on each side of the wing.
It COULD be that the wing is not sedure enough, and when you pull up at high speed, the wing lifts at the LE which will change the incidence for a second resulting in a bad balloon.
Try adding a few more rubberbands on each side of the wing.
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RE: Avistar likes to balloon
I found with my Avistar that it doesn't really need that much elevator throw. I maxed mine out and it was overly responsive under the conditions you state. I recommend toning them back down and it will fly much better. The Avistar is a really fun plane. I wish you could get more throw on the ailerons for faster rolls.
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RE: Avistar likes to balloon
ORIGINAL: MinnFlyer
If it's semi-symmetrical it really shouldn't balloon too badly.
It COULD be that the wing is not sedure enough, and when you pull up at high speed, the wing lifts at the LE which will change the incidence for a second resulting in a bad balloon.
Try adding a few more rubberbands on each side of the wing.
If it's semi-symmetrical it really shouldn't balloon too badly.
It COULD be that the wing is not sedure enough, and when you pull up at high speed, the wing lifts at the LE which will change the incidence for a second resulting in a bad balloon.
Try adding a few more rubberbands on each side of the wing.
I believe MinnFlyer nailed that one. I remember someone saying 2 rubberbands for each pound of plane. Thats 10 for the Avistar and two more just in case. Also don't try hanging on to those rubberbands too long, they get weak and new ones cost less than a plane. Joe
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RE: Avistar likes to balloon
I have been doing some very harsh manuvers so I have been using 16 #64 rubber bands. The wing is epoxied correctly. Before I put my OS 50 SX on it I plan on fiber glassing the wing joint. What would be involved with turning this into a bolt on wing?