Building Aero 3D Day 49: Aileron Hinge Supports & Awkward WF Contemplation

Hinge Supports Glued onto Ailerons

Yesterday, I cut eight pieces out of 1/4“x1/4” balsa stringers to a length of 11/4“. I then marked the center of them and glued them to the inside leading edge of the ailerons, using wood glue, and clamped them in place. The purpose of this is to provide more support/substance for the hinges. I used weights to ensure the ailerons stayed flat on the surface and clamps to keep the balsa pieces tight while the glue dried. You can see the result in the image above.

Next, I attempted to make the assembly for the bottom back of the wing… I’ll call it the WC assembly. Everything I tried to keep things in place just wouldn’t work, from doing it on the workbench to overtop of a piece of wax paper on the wing itself. I even sanded the angle into the WC edge a bit to see if that would help but due to the awkward way the WC angles below the WDs & WEs when the pieces are flush and needing to be to be to the ‘bottom’, which is what I’m calling the longer side, when upside down I just can’t get everything to come together. I think an attempt at using CA is in order… it is so fast acting you basically get one shot before it sets at getting the piece in place properly.

That is where I’m at. The other thing I can do is sand the front WF assembly so that the WGs are flush with the top of WF as then I can put the balsa sheet (W-SH-7) over top.

Building Aero 3D Day 48: Wing Fitting & WF Assembly (Again)

Wing Filled and WF and WGs Glued

Yesterday, Peter dropped off my wing and did a trial fitting into the fuselage. He graciously fixed my previous mistake where I glued the WF assembly to the wrong side of the wing, doh! He was able to remove it and repair the damage to the wing. You can see part of the sanded filler in the featured image above.

As part of the trial fitting, needing to get the wing to sit flush without pushing down, drilled out the holes at an upward angle as well as sanded the doublers. I’m concerned sanded to much before realizing the reason was the addition of the square piece on the wing to reinforce the sheeting around where the servo leads will go through.

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Building Aero 3D Day 47: Wing Tip & WF Assembly

WF and WGs Glued

Today, I put in a couple of sessions. This morning after waking up I went straight to my workshop and worked on the other wing tip. I got the WT2, WT3 & WT4 pieces (one top and one bottom) glued in place. I needed to do the supports for some of them again as they were a bit short. I don’t know if this was the best option; however, it is what I decided to do and will have to see how it all works out. I also lightly sanded the outter rib cap as where it tipped inward a bit it wasn’t flush with the sheeting at the top and leading edge.

I first marked where each piece on the top was going to go and then starting with WT2 applied glue and pinned in place, using a square to make sure they are perpendicular with WT1 (the wing tip itself). Then crouching I did the underside WT2 as well. I followed this same process for WT3 & WT4 pieces. Not wanting to disturb anything while the glue set I breaked for the morning. You can see the result in the very bottom image below.

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Building Aero 3D Day 46: Wing Tip & Wire Support

WT2-4 Support Forms Glued

Today, I worked mostly on the wing tip. I started with the right wing tip and prepped the WT2 through WT4 pieces. I started at the leading edge with WT2, making sure they fit nicely and then glued them in place, using pins each time since it is an awkward shape to clamp.

I marked on the pieces, if there was an opening, wher the edge would be, thus no glue required, followed by a pencil line for location. I then used wood glue along the bottom and side straight edges.

Using a square to ensure the pieces were perpendicular to the wing tip I then pinned the outter end of the piece into the wing tip itself and the inner end into the outter rib. I did this for top and bottom, verifying positioning with a square.

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Building Aero 3D Day 45: Wing Tips & Pictures

Wing Bottom

Yesterday, made more progress on the aircraft started by sanding the trailing edge keeping my sanding block at the same angle as the sheeting along the ribs to try and get some slipstreaming going. Though the instructions suck, I believe that is what I was suppose to do to compelete Step 5 of the Wing section.

After that I prepped the ends of the wing by trimming any excess sheeting remaining and then sanding all the sheeting flush with the outter rib. I also removed any major excess glue gobs. Yes, I know you can still see where there is glue on the ribs in the images below, but non-intrusive to the next steps. I also marked a ‘+’ in ink for all the hinge locations, centered horizontally & vertically. I then know where the center point of all the blocks I put in will be, if the pencil markings indicating the outter edges of each block fade (sample seen in bottom image).

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Building Aero 3D Day 44: Rib Caps & Sheeting Glued

Rib Caps & Mid Sheet Glued

Yesterday, after work I went straight to the workshop as I wanted to get my previously cut and sanded rib caps and W-SH-3 sheet (middle section) glued.

As typical, I used wood glue and after marking the mid-sections on any previously missed rib caps I applied glue to the top of the ribs and along the edge of the sheeting as well as the caps themselves prior to putting them in place. I then used weights where necessary to keep the sheeting down, especially on the two W-SH-5s.

In the case of the remaning outter rib cap I used a damp cloth to wet the balsa piece so that it would form to the shape of the rib better since it was of stiffer material (for some reason) and in a more precarious position since I was gluing it on the outer edge, instead of centering like the others.

Prior to gluing the middle section I added some supports, like I did for the other pieces of sheeting, both sides, providing additional support as there isn’t much to glue to otherwise. I used scrap 3/32” basla pieces and glued approx. half, using medium CA, under the pre-existing sheets. Seen in the image below.

Once that was done I switched back to wood glue, applying to the supports, edges and ribs prior to putting the sheet in place. You can see the state in which I left everything, weighted and otherwise in the featured image above.

Building Aero 3D Day 43: Trim & Rib Caps

Rib Sheeting Made

Yesterday, I made some more progress on my wing in stages throughout the day. The first session of the day was involved getting the remainder of the bottom trim glued in place. I already had the piece made so it was more about figuring out how to get everything down and in place.

I discovered that this piece actually fit better then the other side I did previously… I think this is because, though it appeared at first, the addtional block wasn’t sanded down enough, or something else was preventing the sheet from sitting down in far enough near the trailing edge. I started sanding the angle for the trailing edge to see how this was going to work, as I’m a bit concerned how that is going to turn out, but we’ll see as Peter says “There is no issue that cannot be overcome.” My issue is I thrive for perfection in an imperfect world.

I had previously marked where the sheeting came up to on the ribs so I poured out some glue and place it aong the rib edges as well as along the inside of the trailing edge. I then placed glue along the edge of the sheeting and the one end that butts up to the previous piece. Placing the sheeting I started at the but end using scrap balsa to assist in clamping the sheet tight to the trailing edge as well as over the bottom and top when clamping deown on the sheet itself. Once I had everything clamped and weighted down I added some medium CA along the butt joint to keep it aligned.

You can see the result in the image below:

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Building Aero 3D Day 42: Various Aspects of the Wing

Trailing Edge Bottom

Today, I made some more progress on the wing of my aircraft. I started this morning with the beginnings of rounding the leading edge by using a plane to take of the initial corner and then sand paper rounded over the leading edge moving top to bottom as well as along the leading edge from one end to the other. I cut a smaller strip to do inbetween and around the dowels.

I had a centre line scribbed down teh middle of the leading edge from a previous session as my guide. Once that part was done I took a picture and sent it to Peter as I wasn’t sure and from there I used the plane to take off the edges closer to the center line and followed up with some more sanding. I’m still not loving the job, but we’ll see. You can see how I left it for today in the image below:

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