Thursday, January 30, 2020

Section 29, Lots of riveting mostly, but finally finished the Section

RV14 Build Rest of December

FWD MID FUSE Side Structure

This is half of Januarys work to wrap up section 29, it felt like it would never end! On the last post Travis and I got the left side skin clekoed in place and ready to rivet. Most of this month i worked without help so a lot of prep, deburring, and priming to get ready for several big days of riveting. 

Started out with a bang, mocking up the right side and countersinking the center section plate...on the wrong side! New parts on order, as well as some more fuel line, ill get to that in post on section 31.
Fuselage right ride skin

Hard to see in the picture, but the part is oriented backwards and the top left hole are countersunk on the wrong side.
Center Section countersink mess up

Liz came to the shop to help!!
Put liz to work

I am really bad at tacking "as I go pictures" when I have someone in the shop helping me. These are the first rivets the Liz helped me install!
Fuselage side riveted

Primed the right side skin
Right side skin fuselage

Back in the shop alone and riveting the internal fuselage structure. Im able to reach both sides fairly well. Definitely move slower when riveting alone.
Riveting Fusealge

I didn't show it, but while I was priming this Liz was scuffing the other side and its parts for topcoat later. This time I got smart and scuffed everything before dimpling to make it easier on the scotch-brite bad.
Dimple fusealge skin

Still working solo to I looked ahead in the plans and pulled the rest of the parts for section 29, all the parts of section 30 and some of the brackets for 36. Before joining the section 29 to the empennage it seems to make sense to work ahead and install as much as possible while the access is better.
Prep for prime

Replacement center section is in.
Replacement Center Section side plate
Match drill with the old on, and countersink....This time on the correct side! I checked like 10 times to make sure!

Finally ran out of my AKZO primer, had to finish the last few pieces with SEM self etching. I definitely wasted too much by over spraying and poor mixing techniques in the beginning. Aircraft Spruce has been out of stock for several months, but luckily I found a place local-ish that has it in stock and Im gonna be around this week to pick it up.

Before I found the local shop for the AKZO I ordered my top coat from Stewart and I figured I should order primer just in case I can't replace the AKZO.
Stewart Systems Paint

The seat back rest in the plans for some reason looks intimidating! There is a lot of instruction on 1 page, but taking it in small steps I was able to get part buit.
Fuselage Back rest

The spacer leave a gap so the seat back will slid into it....I think lol

Just missing the counter sunk edge pieces. I had some question about the degree of a AN rivet. It turns out the are 100 or my standard countersink cutter worked for the ACQ counter sunk pop rivets that the plans called specifically to cut at 100 degrees.
Seat back rest

Prepping the right side skin to go on.
Right fuselage side skin

Back riveted the center section side plate on this side...Wish i would have done that on the other side, the skin looks so much better.
Right fuselage center section side plate


This was a huge messy day that I took almost no pictures for. Matt is back in the shop and we finished riveting on the left skin, riveted on the right and pro-sealed the front and top of the skin, then riveted.

You can see a little of the pro-seal on the longeron before we got it all cleaned up after riveting.
Pro-Seal fuselage Skin

Done wit the pro seal, I looked ahead on the planes and found a fuel system and brake system part that pass through the firewall that needed to be sealed too, so I installed those now to save on wasting a tube of pro seal on them later. After talking to some guys, probably could just use Alex Plus from Home Depot instead of proseal for this job.

Starting to look like and airplane......or conoe if you ask Liz!
Fuselage

Installing the rest of the interior braces and covers.

I thought all these holes where suppose to wait for the flap bracket

Turns out its just the side ones, and I missed a dimple!

Luckily the dimpler fits in the flap bracket hole!!

Flap bracket installed
Flap Bracket

The next day after I cleaned up the rest of the pro seal I noticed that the cowling mounting hinge didn't rivet on well. I tried to replace one of them, but it did more harm than good. I think the rivets might be stronger than the hinge? So when they set on an angle they dug into the metal. Since access to this area is always good Im going to leave it alone for now and if the rivets cause issues in the future I will drill a new hinge and replace it.
Cowling hinge

Installing the seal back and gusset roll over brace
Roll over gusset

More of the seat back and gusset
Seat back and gusset

Ooops! I countersunk the rivets in the red circle too...Vans says no problem, build on!
gusset rivet pattern

Felling good and goofing around!

Getting one of the rivets on the gusset to the upper longeron was tricky I had to make this custom bucking bar
Gusset riveting
 feeling good about this outside the box work lol

Gusset and roll bar base install and torqued

We are basically done with section 29, there are the air vents to go but the plans say to wait until section 35 for clearance issues. We pulled the empennage down from storage and this rivet had been keeping me up at night lol. If you look closely you can see its the metal is not dimpled but its mated to a dimpled surface. I wasn't too concerned with this until I realized it was part of a larger plans change to stop the bottom skin from cracking. Vans says this is perfectly serviceable and the main change was to go to the continuous stringer that its rivets too. Should have asked them months ago so I would stop thinking about it!
 A few victory glamour shots!




FWD MID FUSE Side Structure 56.5 Man Hours

Saturday, January 11, 2020

Section 29 Starting Combining 26,27, and 28 to add the side

RV14 Build Rest of December

FWD MID FUSE Side Structure

Started to work on getting the 2 halves together and the side skins on. Match drilling the center section side plate and the upper drag fitting. I am going to do all the left side task and then the right just to keep my mind straight. There is A LOT of work in this section. Lucky my buddy Travis came into town end of the month and we crushed 2 huge days of work.
RV14 Fuselage

You'll need a long, I used 12", drill bit to reach some of these holes.
RV14 Fuselage

Deburred and primed
RV14 Fuselage

I wasn't sure how putting a twist in the upper longeron was going to go but it was rather straight forward. Making the wood blocks was my hardest task since I don't own a table saw, why don't I own a table saw?
Longeron twisting

Putting the piece in the clamp per the plans and twisting with the help of a digital level. To get a permanent 10 degree twist I really had to twist the thing almost around otherwise the spring back would take most of it out. I was happy at 10.48, it will probably spring back more in time
Longeron Twisting

Match drilling the engine mount brackets
Longeron and engine mount match drilling

Riveting after priming. Cherry max rivets, easy enough pop rivet to install.
Cherry max rivets

Lower Longeron Assembly
Lower Longeron assembly

Upper Longeron Assembly
Upper Longeron assembly

Made 2 attempts at riveting together the bottom fuselage skins, One of the first steps in drilling the the lower drag fittings to #20 and clekoing as you go for the cherry max rivets. I didn't have clekos that big. Thanks for stopping by Matt sorry it was a bust.
Riveting the bottom skins

After I got the clekos in Travis stopped in for 2 days and we drilled and riveted the bottom skin. This is the Cherrymax that when into the bottom drag fitting that got the #20 drill. Unfortunately I drilled too far and nicked 2 of the lower drag fitting bolts and ordered new ones.
Fucking up lower drag fitting bolts

View of the bottom skin riveted together, we were cruising sorry i didn't get more pictures. The proud rivets are those same Cherrymax rivets that were drilled #20.
Bottom skins riveted together

Travis working on the bottom skins.
Travis working on the side skin

Putting the bearing into the control column assembly.
Control column assembly

Match drilling and riveting. You have to trim the front edge of the bearing to match the column edge. Turns out after installing this I didn't figure out the orientation of the column and trimmed to wrong edge. I was able to grind the bearing edge down after installing it though...Thankfully.
Control column assembly

Putting the washer stack up and shims in is kind of a bitch. Im not sure I have it how I like, the plans say no side loading, it feels a little tight so Im gonna take out a shim. I used the plans washer stack up on one side of the column and installed the washers and an extra shim on each side of the bearing on the other end of the column.
Control Column assembly

Making the cowing hinges. After you drill these in place the plans never tell you to dimple the firewall flanges it just goes straight to riveting everything together. I emailed vans and they said to dimple the firewall flanges after you match drill and debur before you rivet. See the 2 pics below.
Cowling Hinges

Firewall flange not dimpled?

Dimpled skin??

Made a "special" jig to hold the skins so we could rivet on the center section.

Skin is clekoed on and ready to rivet! Had to get in and make airplane noises.

Im thinking about scuffing the skin and stiffeners before riveting so the rivets wont tear apart the scotch bright. Im 90% sure Im going to use Stewart Systems EcoCrylic for the topcoat of the interior and it uses a mechanic bond...I thinking light gray. I know I know real original. I have no idea about the paint scheme so it will give me the most flexibility.

Well only the other skin to prep and rivet both on....So much to do still.

FWD MID FUSE Side Structure 48.5 Man Hours





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