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  #1  
Old 12-08-2018, 01:33 PM
JDA_BTR JDA_BTR is offline
 
Join Date: Dec 2013
Location: Baton Rouge, LA
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Default Wingtip hinge

For those who put the wingtip on with a hinge:

How many screws did you use top and bottom at the leading edge? On older models it seems the screws didnít go so far forward as in the 14.
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  #2  
Old 12-08-2018, 04:29 PM
MED MED is offline
 
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Location: Aiken, SC
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I have quick build wings, so the holes were predrilled. I used 3 screws on the top and 3 screws on the bottom with the hinges extending aft from there. Seemed to be about right to me. If your wings are not quick build, you could use fewer screws.
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  #3  
Old 12-08-2018, 05:48 PM
JDA_BTR JDA_BTR is offline
 
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I didnít know fitting the wingtips was part of the quick build. Thatís a good service.

I got my tips fitted, filed and drilled per the plans gonna sleep on the hinges and start fresh on it tomorrow. The best example here previously showed no screws. But I just wonder if the hinge pin will make it around. But itís not much diff thank the cowling.

Also I think the W-1016-L wing tip ribs have to be switched left for right so that the flanges point in toward the aileron. Donít you need that for a good place to secure the pins?
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  #4  
Old 12-09-2018, 10:41 AM
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Snowflake Snowflake is offline
 
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I haven't seen any exposed screws on the hinge-mounted tips. The piano hinge doesn't need to bend all the way around and give 100% coverage, it only needs to go as far as the gentle curve of the airfoil. Where the curve starts to sharpen up, leave that unhinged. It'll be something like a 3-4" length around the tip, which will be just fine without a screw.
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  #5  
Old 12-09-2018, 10:45 AM
KeithB KeithB is offline
 
Join Date: Mar 2014
Location: Granbury, TX
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I installed wing tips using the hinge method and I did not use any screws. The flange on the tip is removed and used as a spacer under one side of the hinge. However, I left the flange on the tip at the forward edge - about 4 inches back, ending the hinge at the flange. There were 2 (maybe 3?) pre drilled holes top and bottom that were then over the flange. Rather than screws, I dimpled the holes and filled them with cosmetic flush rivets (I cut notches in the flange to accommodate the shop heads).
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  #6  
Old 12-10-2018, 03:38 PM
gen1313 gen1313 is offline
 
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I fitted my wingtips with piano hinge and I was glad I did. Somewhere on VAF you will find reference to step by step instructions (with images) from a 7 builder years ago. They were relatively easy to follow. From memory I have about twice as many rivets as there are screws in the plans. Very neat.
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  #7  
Old 12-10-2018, 10:51 PM
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N908RV N908RV is offline
 
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Location: Warrenton, VA
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Default Wingtip hinges

Hereís a great step by step, courtesy of Mike Bullock. Not a 14, but same concepts apply. http://www.rvplane.com/?categoryid=3&dayid=567

Exactly what I did. Great mod.
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  #8  
Old 12-13-2018, 09:35 AM
JDA_BTR JDA_BTR is offline
 
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Location: Baton Rouge, LA
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Iím halfway done going by the Bullock instructions in Kitplanes. I did take the hinge to the last hole and it is a little tough to get the pin all the way there. Iím shaping the tip some as done for the cowling and bending the pin to fit well. I havenít sanded the gap yet might wait for the painter on that. It doesnít take much fitment change to change the aft edge alignment. All the holes are drilled. Next is to fit and mark one more time with alignment marks for the edges because you canít have the alignment tool in and run the pins in and out easily. I think I will countersink and set the tip side of the hinge then fit for alignment, pull the hinge,pin then set all the wing side rivets.

I might decide later to make the last hole a screw if needed. Could cut the hinge to make that change. Thinking I might do it now. Might keep the forward edge from wanting to spring out on top. Bottom is no biggie.
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  #9  
Old 12-13-2018, 11:49 AM
Electrogunner Electrogunner is offline
 
Join Date: Aug 2016
Location: Quarryville ,pa
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Default Wingtip hinge

Although on a -10, similar wingtip as the -14. I left the flange on the wingtip about 3.5" at the leading edge both top and bottom and ran the hinge to that. With the flange tucked in tight to the wing leading edge, there is no need for any screw fasteners anywhere besides to hold fast the trailing edge hinge pins from sliding aft.
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  #10  
Old 12-13-2018, 12:40 PM
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Location: Fair Oaks,CA
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I'm pleased with the hinge method. The tricky part for me was how to handle the trailing edge portion and how to make the hinge pins accessible and how to secure them.

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