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  #1  
Old 09-15-2023, 05:11 PM
Webb's Avatar
Webb Webb is offline
 
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Default TAAAWANGGGGG

I connected the trim bias springs to the control column. When the stick is moved left or right, the spring is shifting where it attaches to the control column strap. When it does, the spring vibrates just like a guitar string with a loud twangggg.

I’m thinking a figure 8 safety wire to prevent it from slipping will cure the issue.

Has anyone else had this problem and what did you do?
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Last edited by Webb : 09-17-2023 at 07:06 PM.
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  #2  
Old 09-16-2023, 04:53 PM
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bjdecker bjdecker is offline
 
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Quote:
Originally Posted by Webb View Post
I connected the trim bias springs to the control column. When the stick is moved left or right, the spring is shifting where it attaches to the control column strap. When it does, the spring vibrates just like a guitar string with a loud twangggg.

Iím thinking a figure 3 safety wire to prevent it from slipping will cure the issue.

Has anyone else had this problem and what did you do?
Put a little bit of tygon tubing, or nylon tube or PTFE tubing, over the spring end where it bears on the steel control torque tube.
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  #3  
Old 09-16-2023, 06:41 PM
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smithflys23 smithflys23 is offline
 
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Quote:
Originally Posted by bjdecker View Post
Put a little bit of tygon tubing, or nylon tube or PTFE tubing, over the spring end where it bears on the steel control torque tube.
Do you have a picture of what you mean?
Mine makes the same noise, so Iím curious.
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  #4  
Old 09-17-2023, 04:38 PM
downundarv8builder downundarv8builder is offline
 
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I had the same twang so I used three separate little loops of safety wire to join the spring to the tab. No more twang.
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  #5  
Old 09-17-2023, 07:07 PM
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Quote:
Originally Posted by downundarv8builder View Post
I had the same twang so I used three separate little loops of safety wire to join the spring to the tab. No more twang.
Thanks. Will give it a try.
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  #6  
Old 09-18-2023, 09:25 AM
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Guy Prevost Guy Prevost is offline
 
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I took a different approach and chose to ignore it on both of my RVs. Why add weight or a piece of material that could somehow fail and potentially bind controls?
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  #7  
Old 09-18-2023, 10:46 AM
scsmith scsmith is offline
 
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I had this and I think what I did was use a small split ring to make the connections at the ends of the springs. Not sure - it was a long time ago.

Putting a length of 1/2" clear vinyl tubing over the spring would also dampen the spring vibration.
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  #8  
Old 09-18-2023, 10:52 AM
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Quote:
Originally Posted by Guy Prevost View Post
I took a different approach and chose to ignore it on both of my RVs. Why add weight or a piece of material that could somehow fail and potentially bind controls?
How noticeable is it when flying?

My concern is noise means movement which means wear. If I secure it and it doesnít move, it shouldnít wear.
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  #9  
Old 09-23-2023, 11:21 PM
moespeeds moespeeds is offline
 
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I have the same.

You don't notice it while flying.
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