Fuselage - Center Section

2005-09-03 - Preparing the center Fuselage. (2.0 Hrs).

Drilled the holes in the aft fuselage for the trim cable and electical snap bushings. I was wondering when I should drill these holes, but the instructions never mentioned them, so I looked at the plans. The holes are clearly shown. We are in the "do it when it makes sense" part of the building process. As we have heard from other builders, the plans are now the guide, the instructions are just along for the ride.

I messed-up the two snap bushing holes in the F-706 bulkhead. I need to decide how to fix them.

I forgot to drill the manual trim cable and electrical wiring snap bushing holes in the rear bulkheads.
The drill fits in the back bay to drill the F-711 bulkhead, but I would advise that you drill this before you assemble the aft fuselage.
Electrical on the left, manual trim on the right.
I know this looks wrong, but I had a plan. The manual trim holes are per the plans. The electrical holes were drilled through the tooling holes on F-707, and the hole in F-708 was drilled to avoid the bump. I probably should have just used the manual trim holes for the electrical wiring.
Something is not right here. If I match-drill the the ribs to the snap bushing holes in the bulkhead, I will be cutting into the rib web.
View from the backside.
Ok, here's the problem. The mark was made in the correct spot, and a pilot hole was drilled. However, the flanges on F-728A and F-729A were much thicker than the bulkhead. Consequently, when I driled the holes with the uni-bit, the flanges pushed the unibit toward the outside of the bulkhead. I did not realize this until I clecoed the F-727 ribs on.

I think I know what I want to do to fix this, but I better think on it. That's it for today.