Archive for September, 2005

Trim tab work

Wednesday, September 28th, 2005

After a couple nights of trying, I finally got a good bend on both ends of the trim tab. I'm just glad I'm not the only RV builder to go through a couple of trim tab skins before the bends turn out right. I ended up going with the bent skin flaps as shown in the plans, rather than the little-ribs idea, because I figured the inboard rib would interfere with the E-717/718 horn assembly.

Now to wait for the primer to dry before I rivet it all together and fit it to the elevator – and after than, the tail kit will almost done! It's been slow going lately, but that's okay because the fuselage and wing kits won't arrive until next month anyway.

Finished rudder leading edge

Wednesday, September 21st, 2005

No progress on the RV in a while, as I've been busy at work. I also took some days off to go on a 3000-nm trip with a friend in his Super Decathlon. Awesome.

Getting back to the project, tonight I did some cleaning in the garage/workshop, and rolled and riveted the leading edge of the rudder. It turned out acceptably well. Sorry, no pictures – still having intermittent trouble with the machine that I use to grab photos from the camera.

Built new left elevator

Sunday, September 11th, 2005

This weekend I went nuts on the left elevator and got it 95% completed.

One of the first things I did with the new elevator skin was to cut off the little flaps that Van's wants you to fold down to close out the trim tab area. Instead, I made this little stub rib out of scrap 0.020" to close out that area. I elected to orient it with flanges facing inboard so I could squeeze some of the rivets. If I had it to do over again, I would stagger the rivets on the upper and lower surfaces so they wouldn't line up quite so exactly – that might have let me get the squeezer in there to squeeze one more of them. As it was, I ended up using three AD3's and three MK-319-BS pop rivets to hold this guy in place. It worked out very well and looks great in the finished version.

Here the left elevator parts are resting after being primed (trim servo brackets, interior rivet lines within the skin) or getting some primer touch-up (ribs, spars, etc). The old stiffeners got riveted to the new skin with nary an oops rivet to be found.

Here the left elevator skeleton is complete and ready to be installed in its permanent home. Right after I took this picture I put the required blobs of blue RTV at the trailing edge of the four full-length stiffeners.

Here's a dorky shot of me looking tired, standing next to an almost completed left elevator. Gotta prove to the feds that I built this thing myself.

The only things left to do to the left elevator are to rivet on the trim tab hinge and affix the counterweight permanently in place… oh, and roll the leading edge… and, install the fiberglass tip… and…

In other news, two guys from work have each ordered an RV Training Kit for themselves, and are going to eventually bring them to my little aircraft factory for a hands-on tour of basic sheet metal construction. It should be a fun time. Too bad it will cost them each about $70k before they're finished. Muahahaha!

New elevator skin arrived

Thursday, September 8th, 2005

The new elevator skin and some other misc. parts (extra rivets, etc.) arrived today. I got as far as doing the soldering iron and ruler trick to remove the blue plastic along the rivet lines before I had to call it a night.