Roll bar fix

After talking to Kevin at Vans, I decided I can save the mistake I made in the roll bar by creating a sandwich of aluminum around the mistskenly countersunk part. I made up a doubler, and ordered some longer cherrymax rivets.

I also started riveting the roll bar straps into place.

Finished final drilling and countersinking roll bar

Tonight I finished final drilling the roll-bar, and then countersunk all of the holes. Unfortunately I made a silly mistake and countersunk 6 holes that didn’t need it. I think I’ll need to rebuild the roll-bar, but emailed Vans just in case there’s some kind of safe solution. It was really annoying to realize my mistake and the implications of having to order a whole new roll-bar and redo all this work. Unfortunately I think I’ll need to replace everything, since it’s all match-drilled.

Countersinking
Countersinking
Countersinking
The holes that shouldn’t have been countersunk in the red circle

Final drilling the roll bar

Tonight I clecoed the forward and aft roll bar assemblies together using the two straps. The straps are lengths of flat aluminum, which require some bending to help them align with the curves of the roll bar. I wasn’t able to get them to bend very well, but I managed to get enough bend to make assembly easy.

I started the final drilling process, but need to take it all apart, debur, then reassemble and continue. I’m doing it that way to prevent too much build up of shavings that might cause a misalignment issue.

The forward roll bar assembly clecoed to the two straps

Roll bar

Tonight I clecoed then riveted the sections of the roll bar to make the forward and aft halves of the roll bar. This is done by clecoing each section to the fuselage and then riveting a plate in place to join the two sides of each half. Alignment was a little tricky, I had to carefully remove some extra material from the flanges of the forward half, so that they could join correctly.

Riveting together the two sides of the forward roll bar assembly
Forward roll bar assembly riveted together
Backside of the forward assembly

Roll bar deburring

Tonight I found all of the roll bar parts, and separated the pieces which needed separating, then deburring them. I couldn’t help clecoing on one side of the roll bar to see how it looked. It adds a new dimension to the fuselage, and somehow puts the whole cockpit into perspective.

One portion of the roll bar clecoed into position

Control sticks

Tonight I installed the stick bases into the fuselage, then the sticks, and then adjusted the travel and spacing to finish the stick rigging steps. The access was a little tight for these components, but not as bad as I feared. The most time consuming part was carefully sanding and filing the stick stops so that both sticks contacted the stops simultaneously, both fore and aft. I used a small file, and some strips of Emory cloth, to carefully and gradually adjust the stops until both sticks were touching the stops at the same time. Both were right in the middle of the acceptable range of travel. It feels good to have gotten this far! One more chapter and then I’m done with the fuselage kit!

Left side stick base installed
Both stick bases installed
Both sticks installed