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Onex outboard wing panel aileron pushrod interference
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Lessons-learned submissions follow a standardized format designed to identify the issue, draw out the relevant factors and present useful guidance to others facing a similar situation. The submitter answers the following 5 questions:
1) What went wrong (or right), and why?
2) What were the shortcomings, and why did they exist?
3) What actions were taken to fix the problem?
4) What preventive actions should be taken into account for future efforts?
5) What overall recommendations should be made for future projects?
The length of the write-up and amount of detail presented are left up to each individual. Some lessons learned can be perfectly conveyed in a few simple sentences, while others will require much more. The goal is to be as clear and succinct as possible, not to generate literary masterpieces!
All posts submitted to this forum are held in a review queue for approval by a moderator. Information in the posts will be reviewed, vetted, and modified as needed before going public. Additionally, any replies that are submitted would also be reviewed to ensure they add value and remain on topic. This will avoid normal threat drift of general discussions.
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Onex outboard wing panel aileron pushrod interference
by WesRagle » Tue May 05, 2020 7:37 pm
Hi Guys,
After assembling my inboard wing panel I attached my completed outboard wing panel and test rigged the aileron controls. That's when I discovered what seems to be a common problem. An interference problem with the short aileron push rod and the outer wing panel spar.
Here is a pic of the problem as seen through the inspection hole:
The solution is to open up the push rod pass through hole in the outer wing panel spar web. This would have been easier if it had been done before skinning the outer wing panel. I don't have a template for the finished hole size but it can be determined on an individual basis by test rigging the controls while the outer wing panel is in the skeleton stage. That will of course require that the ailerons be ready to mount.
Here is a pic through the inspection hole after clearancing:
It actually wasn't too bad to clearance even with the wing skinned.
Here is a pic of the tools I used:
A straight die grinder with a bur, a small flapper wheel to clean up the hole, and some scotch bright to polish it out. I fed the air hose through the aft lightening hole, my hand through the third lightening hole, and looked through the inspection hole while working.
Hope this helps.
Thanks,
Wes
After assembling my inboard wing panel I attached my completed outboard wing panel and test rigged the aileron controls. That's when I discovered what seems to be a common problem. An interference problem with the short aileron push rod and the outer wing panel spar.
Here is a pic of the problem as seen through the inspection hole:
The solution is to open up the push rod pass through hole in the outer wing panel spar web. This would have been easier if it had been done before skinning the outer wing panel. I don't have a template for the finished hole size but it can be determined on an individual basis by test rigging the controls while the outer wing panel is in the skeleton stage. That will of course require that the ailerons be ready to mount.
Here is a pic through the inspection hole after clearancing:
It actually wasn't too bad to clearance even with the wing skinned.
Here is a pic of the tools I used:
A straight die grinder with a bur, a small flapper wheel to clean up the hole, and some scotch bright to polish it out. I fed the air hose through the aft lightening hole, my hand through the third lightening hole, and looked through the inspection hole while working.
Hope this helps.
Thanks,
Wes
Wes Ragle
Onex #89
Conventional Gear
Long Tips
Hummel 2400 w/Zenith Carb
Prince P Tip 54x50
First Flight 06/23/2020
42.8 Hrs. as of 10/30/21
Onex #89
Conventional Gear
Long Tips
Hummel 2400 w/Zenith Carb
Prince P Tip 54x50
First Flight 06/23/2020
42.8 Hrs. as of 10/30/21
- WesRagle
- Posts: 899
- Joined: Fri Jan 05, 2018 12:35 pm
- Location: Weatherford, Tx
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