Posts Tagged ‘aileron’

Wing Photos

November 1, 2010

As promised, here are some photos of the recently finished sub assemblies on the wing.

Roll Servo Install

As I wrote in the previous post, safety wiring those two bolts that mount the servo to the bracket was a bear. We’ll see what the tech counsellor says about the quality soon 🙂 Other than that it’s a pretty straight ahead install.

Right fuel tank cover plate and sender install

I got both the tanks closed finally. They still need pressure testing, but I’ll wait till later. I hope I never have to take these things off again. The screws are pretty soft and the philips heads mangle easily.

Aileron control arms primed

I went back and primed the ends of the smaller aileron control arms per Van’s suggestion. One end of each will be exposed to the elements so it is prudent here.

Safe Air pitot mast install in left wing

Pretty straight ahead. I used the template to align the position then rough cut the hole using unibits and the Dremel. With sand drums on the Dremel and the mini files, I smoothed everything to final shape. Match drilled and countersunk the pitot mounting plate and we are all done. I’ll have to wait to rivet until riveting the skin and running the pitot lines.

Right wing control and servo arms

Here’s the business end of the servo arm where it mounts into the aileron control horn at mid span on the right wing.

I started to put the inspection plates back on and twisted the head off of one of the small screws. Argh! So not I’ll either “ez out” the screw or remove the nut plate and reinstall a new one. For now though I am just putting the wings in the corner. Now back to the fuse!!!


Wings, Wings, Wings

August 5, 2010

Work has been picking up again so I spent the better part of the week finishing up details. The left wing gap fairing and flap brace are now installed. All the spacers and hardware were made and assembled for mounting the ailerons. Same with the bellcrank hardware. I greased and torqued the bellcrank bolts as well. I adjusted the smaller control arms relative to the wood guides mounted on the wings ends. Finally I went back to trim and bend the flap hinge pins. I have safetied them on yet as I expect to take them on and off a few more times. Now I need to assess the wire runs.

An Update Finally!

July 20, 2010

Ok so I ignored the build log for a month. But I have a good excuse. I am actually getting some good hours in on the project without sacrificing family or job time… mostly. Anyway, in my last post I was about to take a week off from work in mid-June to finally focus on the QB wings. I had the optimistic idea that I could get them nearly finished with an 80-hour week put toward the project instead of the 80 hour week I’d put in at the real job. Well I probably only logged about 30 hours in the garage that week and in reality the QB wings at my pace is more like 120 hours worth of work. Still I am making great head way and as of mid July I am closing out a lot of the wing work. Without further ado on to the progress:

With the bellcrank bushing drilled out and the metal prep work finished on the aileron mounts, I started by riveting the aileron mounts together and then on the wing. I have the left a few of the rivets undone as I wasn’t able to squeeze them. After butchering a couple of bucked rivets, I decided to order 4″ yoke to get to these rivets later.

Next up I prepped the aileron and flap braces and matched drilled them to the structure.

The aileron brace fitted and drilled

A down the line shot of the flap brace ready for priming.

Onto the control arms. There are two on each wing. A small steel one connects aileron to the bellcrank. A larger aluminum control rod connects the bellcrank to the center fuse control columns. First, I laid out where the hole needed to be drilled using painter tape to mark the circumference and then evenly divding that for the two rivets on the steel rods or the 6 pop rivets on each end of the aluminum arms. The V-block and some boelube on the drill press made quick work of the drilling.

Measure the circumference then divide by 6 and mark the tape.

Using the V-block to assist in drilling the holes.

Then I matched drill the rod end in place.

I left the riveting till later so I could move on to installing the steel mounting brackets on the ailerons and flaps. These were pretty straight forward, though I used a combination of drill press and match drilling to ensure good line up and clean holes for the all the bolts.

After temp. mounting the ailerons, I got out the primer for the flap and aileron braces and mounts. Done and done. Now onto the flap hinges. I took some time to line up the ailerons into neutral position use the wood stringer and tool hole method Van’s suggests in the instructions. This way I was able to fit the hinge and allow for the 1/4″ space between flap and aileron edges. With that mark on both wings, I could line the hinge up accurately and drill at the holes out.

Priming: The bittersweet moment of building. It means your close to assembling something but it's a PITA.

With that out of the way, I worked on countersinking the flap brace. There’s a small curve ball  for the QB wings at the root end of each wing. The standard build instructions spec universal head rivets but with the QB they want us to use flush rivets. I emailed Van’s. Joe said to just follow the instructions for my kit. OK flush cherry max it is. I couldn’t tell you why though.

Next up more riveting on the braces, finishing out the control rods and getting all the washers and spacers in place.

Returning to the QB Wings

June 14, 2010

QB Wing Vacation 2010 is here! I put the aft fuse aside and dug into the wing parts. I reread the mannual again and pulled together all the relevant wing parts. They say the QB wings are about 80% complete. They seem even for complete than that. Mount the control surfaces, install the control arms, moutn the wing top and attached the bottom skin. That’s about it in a nutshell. There going to be other things like the lights, pitot and wiring but I can save that for later. Onward!!!

I rearranged the workshop with the wings front and center.

Step one is to drill out the bushings for the bellcrank in each wing and temp. install in wing. I am also installing the roll servo mount in the right wing at the same time.

Left wing bellcrank.

Right wing bellcrank with roll servo mount installed.

Next up will be mounting the aileron brackets. These are 3 and 4 piece assemblies. The thick aluminum requires a good deburring. I got to use my hefty vixen file for the first time. This thing is quite a weapon against aluminum. It took awhile for me to find my vixen file zen as too much pressure caused chattering and an uneven surface. I almost got them all prepped tonight but had to call it quits. Tomorrow I’ll finsh up the prep and then mount for match drilling and countersinking.

Left wing outboard aileron bracket ready for match drilling.

My weapons of choice for metal prep. The vixen file up top will take out a finger or small animal if you're not paying attention.

Metal porn. Look at that shiny edge work!