Archive for February, 2011

Taking Shape

February 28, 2011

The final assembly of the center section took a few steps forward this weekend. The seat ribs/705/baggage ribs interface is now riveted. The central ribs were very challenging to squeeze. In fact, I have one questionable rivet that might need to be drilled out. The nutplates for the seat ribs were installed as well. The only thing holding me up is etching and priming the 776 skin before riveting it to the skeleton. The weather wasn’t going to cooperate today to do that, so I decided to work on other details in the shop.

Here’s a view down the center two seat ribs looking at the 705 bulkhead. The top rivets on each vertical row (the skeleton is sitting upside down so its the bottom rivets in this photo) were the difficult ones.

This is a detail of the 705 bulkhead with seat ribs and baggage ribs attached.

The center section is wider than the sawhorse plus I wanted a larger, softer surface for the whole fuselage to rest on upside down. In preparation for attaching the center section to the aft fuselage, I made some wood spans for the stock metal sawhorses I’ve been using.

Another detail I need to prep are the slots in the bulkheads that the longerons slip into. I should have done this when I was prepping the bulkheads but I missed it. I just need to run a file over them to open up enough to have the longeron angle slide in without forcing it.

Spoiler Alert!

February 23, 2011

Tonight I didn’t have time to do much more than test out how to rivet the ribs to the 705 bulkhead and fit the floor panels together. If you’re the type of person that loves a good mystery or wants your stories to slowly reveal themselves then I urge you to stop reading now…

 

Ok for the rest of you that stayed, here’s a cheat sheet to what exactly the center section is relative to your anatomy. Enjoy!

Riveting

February 21, 2011

Here’s a quick project update sans pictures. We headed to the Cascades for Friday and Saturday nights hoping to find some good sledding for the boys. Surprising we didn’t really find good snow, but we had a grand time none-the-less.

Obviously not a lot could get done on the project. I did manage to arrange for a another visit from Paul to help me with riveting the 716 ribs to the aft spar bulkhead. We did nave to drill out one rivet. I started attaching the 705 bulkhead to the back of the seat ribs.

An Hour A Day

February 16, 2011

The 2011 resolution is to put in at least one hour a day. So tonight even though I’m waiting on some riveting help with the ribs, I did keep inching forward.

The control column access plates are simple two piece units with a nut plate on the flange for the floor attachment.

I also played around with how to jig up the 704 bulkhead so we can set those -4 rivets and not mar up the ribs or bulkhead web.

Weekend Update

February 14, 2011

The ribs and small bits for the center section are now etched and primed. I’ve started to install all the nut plates on all the ribs. Looks like I am finally going to need to break out the double offset rivet set this week to assemble the skeleton.

Sore Shoulder

February 7, 2011

This was my weekend. Dimple Baby Dimple! It’s a good isometric exercise at least. Oh— and notice the reading glasses. I am officially getting old. I am stunned at how worse my near vision has gotten in the last six months. After cleaning and etching the center section parts, I’ll be using my super undercover, top secret spray booth location for priming as Mother Nature just won’t cooperate anytime soon.

The Skinny

February 5, 2011

Today was focused on finishing all the center section parts. First, the baggage ribs with the undrilled holes were fixed and dimpled. Then I spent most of the afternoon getting the huge 776 skin prepped. Reaching to debur all those holes makes for a sore back. Thankfully prepping all the edges is more zen-like. Finally, in between family movie night (Despicable Me) and mom and dad movie night (The Girl Who Kicked The Hornets Nest), the center section bulkheads were dimpled.

Up next is dimpling the big skin and cleaning all the parts for priming.

Ribs and Things

February 2, 2011

Tonight I was able to finish up deburring all the holes from match drilling the center section together. In addition I dimpled all the ribs including both 623s and the attach straps. There’s a bunch of little random parts I need to keep an eye on when it comes time to prime everything as they are easily lost.
I goofed on both 727 baggage ribs and missed match drilling every other hole. I need to reattach and match drill when I get the skin down to prep it for final assembly. After some debate I decided to prime the inside of the skin. Never know when that drink might spill.