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- Jun 21, 2017
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I have a few questions on this topic. The Jungster 1 I am rebuilding has quite a large difference in defection between upper and lower ailerons.
The original plans built upper aileron slave strut mount gives a large difference in throw between upper and lower ailerons. With equal throw on the lower the upper will have much more down than up throw.
It has been advised by other Jungster builders to move the mount hole on the upper slave strut mount 1/2 inch back to prevent cam locking. I think this reduced the amount of difference a little.
I drew some further solutions and found moving the hole the 1/2 inch back and making it closer to the under surface of aileron brings the upper and lower aileron throws closer together by a very small amount. It seems getting the same (or very close too ) up travel on both the upper and lower is achievable but the down travel seems to always be more on the upper...
So...
1: Is this effect worth chasing to totally eliminate it ?
2: How do other similar bi panes deal with this issue?
3: If some difference must remain, what would be an acceptable amount ?
I know less down gives less adverse yaw but the down going aileron creates more rolling action and this is desirable regardless of extra adverse yaw.....that’s what the rudder is for ay
I appreciate all and any knowledgeable input
Cheers
Dom
The original plans built upper aileron slave strut mount gives a large difference in throw between upper and lower ailerons. With equal throw on the lower the upper will have much more down than up throw.
It has been advised by other Jungster builders to move the mount hole on the upper slave strut mount 1/2 inch back to prevent cam locking. I think this reduced the amount of difference a little.
I drew some further solutions and found moving the hole the 1/2 inch back and making it closer to the under surface of aileron brings the upper and lower aileron throws closer together by a very small amount. It seems getting the same (or very close too ) up travel on both the upper and lower is achievable but the down travel seems to always be more on the upper...
So...
1: Is this effect worth chasing to totally eliminate it ?
2: How do other similar bi panes deal with this issue?
3: If some difference must remain, what would be an acceptable amount ?
I know less down gives less adverse yaw but the down going aileron creates more rolling action and this is desirable regardless of extra adverse yaw.....that’s what the rudder is for ay
I appreciate all and any knowledgeable input
Cheers
Dom
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