Well today before work I tried to get as much done on the flaps as possible. Yesterday Dad and I had already started dimpling the skins and the skeleton for the flaps, so today I decided to get these things all knocked out.
I was able to get all of the ribs and spars scotchbrited (if that's a word) and finished deburring all of the holes. Once this was done the dimpling continued. I finished all of the edges with the hand squeezer and picked up were Dad left off on back dimpling the skins. All in all it was a productive day for the time I had, and therefore I'm happy!
Showing posts with label Flaps. Show all posts
Showing posts with label Flaps. Show all posts
Wednesday, February 16, 2011
Tuesday, February 15, 2011
Busy Day!
Today Dad and I were able to get a lot done today on the project. Since we've reached a bit of a hiatus with the wing we decided to continue on the flaps. I've been working alone a bit on the flaps the past couple of days but today we were really able to slam some work out. We started by drilling the skeleton to the bottom skin and drilling the hinge for the right flap. When we first tried drilling the hinge a couple months ago we really overthought it and decided to let it sit for a while. But today we just dove in and finished that task. They look good! When it comes ti
me for attaching the flaps to the wings we're going to split the hinge pin in half and bend a 90 in each which will then attach to the flap brace, making it easier to remove later on.
Another project for the day was to fabricate the FL-706A brackets and to bend the FL-706B brackets. The 706A's are made from 125 x 1 1/2 x 2 aluminum angle and they support the inboard section of the flap where the linkage connects. A couple of passes on our band saw and a few swipes on the deburring wheel and they were ready to be drilled. I started by clamping the 706A to the flap spar and match drilling it. Once this was done, it got clecoed (while being drilled) to the spar. The next step was to put a 6.3 degree bend in each 706B, one will be bent up and one will be bent down (right and left). After trying a bending brake and failing I headed over to our friends hangar to seek help. He suggested a vice and together
we decided to use a 1/4 drill bit and a set in the vice to put the bend in the piece. After a bit of trial and error, we were able to get them lookin' perfect. I took these back to the hangar and clamped one to the flap spar and clecoed it to the inboard rib, once this was done it got drilled. After everything is drilled, the aft most hole (not the tooling hole) gets enlarged to 1/4" for the bolt that connects to the rod end bearing. Once all together it feels really strong!Dad was able to get the skins all devinyled and once this was done we deburred all of the holes, inside and out and dimpled some of the skins. These flaps are really close to being primed and riveted together. Thursday we should be able to pick up some more primer from Smitty's eventhough the forecast for the week looks crummy for painting.
Saturday, November 27, 2010
Flap Assemblies
Today was another productive day on the RV, we got started on the flap assemblies. After poring over the plans for a bit we began to get a picture of how they were constructed and what went where. We jumped to this because we're still waiting to buy more primer, and besides it hasn't been the nicest out for priming.
The construction of the flaps starts by clecoing the end and center ribs to the flap spar and match drilling all of it. The holes for the center ribs are punched a bit small, and they get drilled out to #30 to accept the LP 4-3 blind rivets that are supplied. These rivets hold all of the flap ribs to the spar. We also fabricated the small spacers that fit underneath the trailing end of the end ribs. Once this was done we clecoed the assembly to the bottom skin and match drilled it. It started to look like a flap!
The manual tells you to look out for small gaps that may occur between the "trailing edge" of the bottom skin and the center ribs, if there are any, you have to make small spacers to fit the gap. We only needed to make two of these and made them out of the ".025 T-3 sheet. This fit perfectly and made for a snug fit.
We began to work on the piano hinge for the flap and decided we would follow our friend Dwayne's idea and split the hinge pin into two pieces that secure to the flap brace on the wing towards the center of it. This requires a few of the links to be removed in order to be able to access the pins. We're going to save this for a later date though once we have our pile of parts primed and once we catch up!
The construction of the flaps starts by clecoing the end and center ribs to the flap spar and match drilling all of it. The holes for the center ribs are punched a bit small, and they get drilled out to #30 to accept the LP 4-3 blind rivets that are supplied. These rivets hold all of the flap ribs to the spar. We also fabricated the small spacers that fit underneath the trailing end of the end ribs. Once this was done we clecoed the assembly to the bottom skin and match drilled it. It started to look like a flap!The manual tells you to look out for small gaps that may occur between the "trailing edge" of the bottom skin and the center ribs, if there are any, you have to make small spacers to fit the gap. We only needed to make two of these and made them out of the ".025 T-3 sheet. This fit perfectly and made for a snug fit.We began to work on the piano hinge for the flap and decided we would follow our friend Dwayne's idea and split the hinge pin into two pieces that secure to the flap brace on the wing towards the center of it. This requires a few of the links to be removed in order to be able to access the pins. We're going to save this for a later date though once we have our pile of parts primed and once we catch up!
Subscribe to:
Posts (Atom)