Posts Tagged ‘726’

Aft Fuse Riveting Part 2

January 12, 2011

Here’s the project progress from the last couple of weeks. I’m including a lot of pics as these are some of the more interesting sections of the fuse to put together. My friend Paul came over for round two of riveting the aft fuse. We got all the rivets at the far aft end done. We had to drill out 3 or 4 along the way. There’s just a few left on the 707 and 708 bulkheads and J-channel. Another couple of hours should do it.

Next up, I’ve started the initial assembly of the center section after prepping all the ribs (did I mention how tedious that is?). It’s quite the Rubik’s cube to get everything in the right spot. The 776 skin and right side baggage space ribs were just not going together. After silently cussing out Van’s CNC machines for a few hours, I discovered I had the 725R and 726R swapped. WHOOPS. Now everything is clecoed together waiting to be drilled, deburred and dimpled.

One thing I overlooked in my excitment to get the aft fuse together was prepping the rudder cable exit. That little hole to the left of the pass through hole above is for the screw mount. It should be drilled for a #8 screw and dimpled BEFORE the skin is assembled with rest of aft parts. Now I need to get clever about how to dimple the hole.

All the ribs except the 2 outside 715 L and R ribs cleco in place. After everything gets put together, I will need to come back and drill out the front of the 715 ribs using the 704 bulkhead as a guide.

This is the outside intersection of the F-715R rib and the F-705 bulkhead. The bottom flange gets drilled out for a bolt.

Here are the 716/715 ribs and the aft part of the F-704 bulkhead. These will be a mixture of -4 sized rivets and bolts. I’ll need to be ginger while drilling this stuff.

Finally here’s a close up of the last couple of bulkheads in the aft fuse after riveting. The seams on the skins are all tight and I am really happy how it all turned out. The only cosmetic issue is a slight smile on one of the rivets that sits under the HS. I actually think its awesome. I see it as a signature that no other kit will have. However, one signature is enough! Onward…

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