KitLog pro

Powered By Kitlog Pro v2.0

RR3 Web Site
' style=
Date:  10-9-2018
Number of Hours:  1.50
Manual Reference:  
Brief Description:  Flap construction

Started on the Flap today. Building them are not that difficult (now at least). It all starts with a flat surface. The work table you have to build is the pain. As I said previously, it is clamped to the rear of the wing ribs along the flap section of the wing rib profile. You have to follow the warp of the wing for both the flap and aileron. So, the table uses the wing itself to ensure the control surface is correct in alignment. Getting it flat and square is the pain. It took a couple of hours over a few days to get it right and let it sit and acclimate to the temps and humidity. After that, it is just a matter of re-checking everything and making any necessary adjustments.

So, today I laid out all the center lines for the flap ribs, laid out the ribs and squared them all up and installed the jigging to keep them in alignment following the wing drawing. The critical part of the flap is ensuring that the outboard end is aligned and spaced the proper distance form the aileron rib (1/4”). So I used scrap 1/4” stock and nailed it onto the table adjacent to the aileron rib clamped in position on the table. Once that was completed, I aligned the spar and marked it in four places in relation to the center distance of each rib I had previously marked onto the table.

Now we are ready to remove the flap from the jig, sand, clean and prep the spar and ribs for epoxy (Hysol). It is difficult to epoxy these in place completely, so I will have to spot epoxy each of the ribs to basically “tack” them in place once the flap is back in the jig. In few hours I can remove the flap from the jig again and finish the epoxy job with the exception of the hinge areas. Those areas must be re=prepped once it is time to epoxy them in place.

Well, time to enjoy a nice break and prep the mind for the task. Carroll and I should begin the epoxy work in a few days.
' style=

Starting alignment

Starting alignment

' style=

Completed alignment

Completed alignment

' style=

Most crictical alignment required

Most crictical alignment required

' style=










Copyright © 2001-2024 Matronics. All Rights Reserved.