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Old 05-05-2023, 07:07 AM
JDA_BTR JDA_BTR is offline
Join Date: Dec 2013
Location: Colorado Springs, CO
Posts: 1,561
Default Drilling flap hinge

I’m trying to figure out how to clamp the flap hinge to the wing for drilling the hinge. It would be convenient to line it up in the wing stand because it is easier to line up the aileron to the correct position there. If I lay it on the bench the flap weight can be supported better.

What’s the easiest way to get it done?

And I found this page:

Looks like a good way to go.
Ser 140142, RV-14A flying - N1463
Ser 83825, RV-8 building - N8638?

Last edited by JDA_BTR : 05-05-2023 at 07:17 AM.
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Old 05-05-2023, 07:35 AM
PhatRV PhatRV is offline
Join Date: Mar 2018
Location: KAJO
Posts: 1,026

For my RV8, I put the wings on the table, lay out the flap and connected the aileron. This allowed me to align the flap trailing edge to the aileron trailing edge. Then I lay out the piano hinge. I found out that I need a wider half of the hinge in order to make both trailing edges equal. Drilled the pilot holes on the ends and the clecos will keep things aligned enough for me to finish drilling out the rest of the holes.
RV8 (N38PV): 90% completed (90% to go)
Days to Final Installation: 999
Days to AWC: 999
Days to First Flight: 999
Painting: 99% completed
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Old 05-05-2023, 08:25 AM
wirejock's Avatar
wirejock wirejock is offline
Join Date: Oct 2005
Location: Estes Park, CO
Posts: 6,221
Default Hinge

Start here.
The alignment is easy. The aileron is mounted so a jig to hold it is useful. You'll need it later anyway. Search for wingtip mounting methods. Lots of ways to lock the aileron in trail. I fabricated a jig. Long piece of flat aluminum drilled to match the tooling holes with a line from end to end. Bolt it. Line up the aileron to the line and clamp. Trace the surface to the jig. Remove and trim exactly. Grab a piece of 2x4x12. Trace the cut out and cut. Bolt the jig back in place. Slip the block over both the jig and aileron. Locks it in place in trail.
Clamp the flap with hinge per the tips in the link above. Grab a long piece of aluminum angle. Lay it on the edge. Move the flap till the angle is in contact with the aileron and flap. Double check the gap.
Larry Larson
Estes Park, CO
E-mail: wirejock at yahoo dot com
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Donated 12/2022, plus a little extra.
RV-7A #73391, N511RV reserved
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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