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  #1  
Old 11-26-2022, 01:11 PM
claycookiemonster's Avatar
claycookiemonster claycookiemonster is offline
 
Join Date: Oct 2007
Location: Midway, UT
Posts: 560
Default Flap hinge pin removal?

The plans suggest a hole in the aileron hinge for flap pin removal outboard. This requires aileron removal. Right now, in the initial wing installation and aileron/flap alignment, I find I can remove the flap pin inboard between the inboard portion of the lower flap surface and the lower wing surface. Will that manner of pin removal remain? If so, I'd like to put a 90 degree bend in the pin there so it's easier to grab.
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  #2  
Old 11-26-2022, 01:21 PM
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Carl Froehlich Carl Froehlich is offline
 
Join Date: Dec 2007
Location: Dogwood Airpark (VA42)
Posts: 4,028
Default

I recommend doing the hole in the aileron bracket. The pin can be removed by disconnecting the aileron push rod and letting it hang down. No need to remove the aileron itself.

Use a self tapping screw in the hole after the pin is install as a locking device on the outboard side. Use a piece of safety wire through a 1/16 hole through the most inboard hinge eye as the locking device for the inboard side.

Carl
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  #3  
Old 11-26-2022, 02:55 PM
ArlingtonRV ArlingtonRV is offline
 
Join Date: Feb 2005
Location: Marysville, WA
Posts: 607
Default Another Way to Go

An alternative method would be to split the pin in the middle and make it two pieces going from the middle inboard and outboard. That way, the flaps can be removed without messing with the ailerons at all.

I didn't build this, but this is the way the builder of my airplane chose to go and it works quite well.

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Arlington, WA
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  #4  
Old 11-26-2022, 03:15 PM
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wirejock wirejock is offline
 
Join Date: Oct 2005
Location: Estes Park, CO
Posts: 5,879
Default Center removal

This works very well. Pins are pulle from the center.
I have since cut the keepers down to one eyelet each.

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Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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  #5  
Old 11-26-2022, 04:45 PM
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Carl Froehlich Carl Froehlich is offline
 
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Location: Dogwood Airpark (VA42)
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Default

I did the pins in the middle on the first plane - hated it.

Carl
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  #6  
Old 11-26-2022, 05:01 PM
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Ironflight Ironflight is offline
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Location: Dayton, NV
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Default

We’ve done the pins in the middle on all three of our RV’s - love it!!

(Sorry Carl)
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  #7  
Old 11-26-2022, 05:01 PM
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PaulvS PaulvS is offline
 
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Location: Western Australia
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Quote:
Originally Posted by Carl Froehlich View Post
I did the pins in the middle on the first plane - hated it.

Carl
Why did you hate it? I already have the hole in the aileron bracket during construction but a tech advisor saw it and suggested to instead split the pin in the middle.
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  #8  
Old 11-26-2022, 05:09 PM
abwaldal@gmail.com abwaldal@gmail.com is offline
 
Join Date: Jan 2017
Location: Battle Ground WA
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With the pins split in the middle the security is no more than bending an eye in the end of both pins and safety wire the two eyes together. Couldn't be easier than that.
Oh ya remember to clean and lube the pins with out any paint. As they could be a pain to get out after 500 hours.

My three cents worth Art
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  #9  
Old 11-26-2022, 05:37 PM
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Webb Webb is offline
 
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Location: Jackson, MS
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Quote:
Originally Posted by wirejock View Post
This works very well. Pins are pulle from the center.
I have since cut the keepers down to one eyelet each.

Attachment 34278
I like it. Gonna steal it. Will install a plate nut for the screw.
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  #10  
Old 11-26-2022, 06:10 PM
Ralph Inkster Ralph Inkster is offline
 
Join Date: Feb 2008
Location: Calgary, Alberta
Posts: 2,010
Default

Another vote for pins in the middle. All of my builds & re-built RVs were done this way. I bend the hinge pin so they lay flat to the bottom skin & secured with a tab & screw. Real easy to remove when needed.
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