Firewall Painting

Time: 2 Hours

I have been pretty busy flying at work this week and haven’t had the time to get much work done in the Hangar. When I got home tonight I decided that I need to get something done even if it’s just a little. The primer on all the firewall support pieces was dry so I grabbed my final color spray paint. I decided to go with a granite gray that is a satin finish similar to the cockpit of the Lear 45. I found this color in a Rust-Oleum rattle can which will make it pretty easy to paint. I’m hoping that I can get good results that are constant. Only time will tell!

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IMG_3594.JPGI decided to move ahead in the plans as I wait for the paint to dry. The next step it to work on the forward floor assembly. 12 nutplates have flush rivets holding them in place on the floor substructure, so I machine countersunk them.

IMG_3596.JPGThen I checko’ed all the parts together for match drilling.

IMG_3595.JPGI also bought a $14 portable clothes rack on Amazon to use as a paint dryer for hanging parts.

IMG_3597.JPGMy second parts bin also arrive from Amazon today.

IMG_3598.JPGI have a 3 day weekend starting tomorrow so I’m hoping to get some good work done on the RV as well as some organization in the Hangar. I will also probably help my buddy rivet the top skin of the tail cone on his RV-8 this weekend. Short time in the Hangar tonight but good progress.

Firewall Support Structure

Time: 4 Hours

I got all the countersinking finished up today. I need to get better at reading the plans and the orientation of how parts line up. I spent some time trying to figure out two parts before I finally understood. This is due to the couple of months off if building I think. When I finished up that task I got right to scuffing all the surfaces for priming. I then cleaned all the parts and placed them in my painting table.

IMG_3585.JPGA couple of coats on all the sides and these will be ready for paint.

IMG_3587.JPGI will let the primer dry until tomorrow and get to painting. While I was cleaning up I decided to try to find all the parts for the next two steps in the build, the forward floor and gear towers. I found all but one part for the floor and gear towers. I will have to go through the parts to find that missing piece in the piles of aluminum that I have. I assembled the 2 gear towers to see what they look like.

IMG_3588.JPGI also received a couple of tools from Cleaveland tools and Avery tools. The really important one is the tungsten bucking bar! This is a really dense metal, more than gold, and makes for easy riveting according to everyone who uses them.

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More Firewall Work

Time: 2 Hours

I try to get a little work done in the Hangar any chance I get. Today I spent a good part of the day visiting with some fellow builders over lunch and then to a visit to my friends shop to see the progress on his -8. It also have me a chance to take some more photos of some areas that I will be working on shortly. So when I finally got home I wanted to do a little work which only consisted of countersinking all the holes that match up to the dimples on the firewall that I did yesterday.

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IMG_3578.JPGI decided that would be enough today as my lower back is a little sore from sitting at my workbench. I guess I need to recondition it like I had it all winter, having a couple of months off from building didn’t help I guess. Next up will be scuffing, cleaning, priming, painting and finally riveting all these pieces I have been working on.

Firewall Work

Time: 5 Hours

Today started out with a few necessary errands that I had been putting off for a few days as I was too busy with the arrival of the fuselage. Once those were done I got right to work in the Hangar. I spent about an hour finishing up the edge deburring in the stainless steel firewall this stuff is pretty tough and requires more elbow grease to get the job done. After that I reassembled the firewall, stiffeners, spacers and engine mount brackets to match drill all the #30 holes as well as the 6 nutplate’s #40 holes that pass through the firewall.

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IMG_3557.JPGI then disassembled all the parts and final drilled the nutplates in the stiffeners that don’t pass through the firewall. The plans then call for a 8° forward bend in the top of the firewall.

IMG_3565-0.JPGI took a measurement from the plans and marked a reference line on the flange side of the firewall. With a couple of 1×6″ boards cut to fit I clamped one to the lower side of the reference line and to the workbench. The other I just clamped to the firewall. This have me a leverage point to make a nice clean bend.

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IMG_3560.JPGI then zeroed out my digital level to be able to tell when I hit 8°.

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IMG_3562.JPGAfter a little pressure and tweaking I was able to get it spot on 8°.

IMG_3563.JPGNext up was to deburr all the holes in the firewall. Since the stainless steal is so hard you can wear out drill/deburr bits pretty fast. To help out you can use a lubricant like BoeLube, a Boeing made lubricant, to keep the bits cool and sharp.

IMG_3564.JPGI then marked off all holes in the firewall that I don’t want to dimple and dimpled the rest with the DRDT dimple machine.

IMG_3566.JPGThat’s where I called it a day, next up will be to countersink all edges of the angles, supports and spacers for the firewall to accept the dimples. Then my first test at priming/painting to the final interior color.

Fuselage Start

Time: 4 Hours

I spent the morning finishing up the inventory process. All I had left was the large bag of hardware with all it’s small bags inside. Everything made it! I ordered another 64 drawer cabinet like the other one I have for all the other hardware, unfortunately it didn’t show up today so I had leave some of the hardware in their bags. After I got the inventorying done and cleaned up the Hangar I started reading the manual and got to work. First task in the fuselage is to work on the firewall and it’s associated stiffeners, spacers and engine mount brackets. It took a while to find all the parts since I don’t have any organization of all the parts yet. I started by cleckoing all the stiffeners and spacers to the firewall to make sure I had everything laid out correctly.

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IMG_3552.JPGI then removed everything and started the deburring process on all the stiffeners, spacers and brackets. After those were all done I moved on to the edge of the stainless steel firewall. This firewall is very sharp and very strong. I started at one end and made it about half way around the edge before calling it a night. I ended up using some 180 grit sandpaper and it worked pretty well but slow. I have to think ahead as I start this fuselage as some of these parts will be visible in the cockpit and I will need to prime and paint before riveting. Pretty excited to get this fuselage under way!