Placed the wing tube into the two wings and with my wing tightening screw, I slowly tightened the wings together, removing the excess as it squeezed out. Let it set up for 12 hours and popped it apart. I now have a nice seam where the wings meet.
It will be much easier now with the wing tips removed to finish up the mounting of the wing, and constructing the rear spar box. I will still need to make a flush joint with the fuse after the wing mounting is complete.
For size sake I placed my 1/6 scale He 219 wing on the Lanc wing, wow, this is a beast, lol, as well you can see the size difference with wing thickness.
I do have a few questions for anyone else that has built this Lancaster.
1. Did you make your vertical fins on the tail removable? 2. Thinking extra bracing via either plywood or dowels to secure the fins to the horizontal stab are needed? 3. What are you guys using for spinners? 4. Where can fiberglass cowls be purchased?
Feel free to post fella's, and share your pictures if you have any.
Started working on the rear spar box. Had to open up the fuselage to fit the box to take the 1/4 inch plate. A little more sanding on the fuselage openings, and I can assemble both wings, and tack glue it into location to confirm the fit.
Craig
Attachments
Fuselage opening for the spar plate
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Box is made and cut to size taking in account the curvature of the fuselage
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Spar box is pinned with bamboo scures and glued in
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Cut the bamboo sanded and a drop of thin CA into the ends
Started gluing in the rear spar box. With the wings attached I glued in the box with some Ca, then have added triangular stock to the top, and the bottom of the opposite side. After this has cured, I will remove the wings and continue securing the box with epoxy and triangular stock.
Finished up the rear spar box. Attached the wings, secured the front bolts, then drilled out the holes for the rear spar plates, and inserted the bolts. This area is super strong and well supported. Also drilled out two holes on each side for the servo wires etc, that will enter the fuse from the wing. Traced the wing profile on the fuselage for reference.
Craig
Attachments
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Looking at the box from the rear, in the Bombay area
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Filled in the area with balsa, sanded it flush and glassed it
Did more work on the ailerons. Because I made the wings split, the ailerons do extend past the end of the wing root. I wanted to ensure they are well secured when the wing is attached.
I glued a 1/4 inch dowel onto the aileron end, at the pivot point. Secured brass tubing into the inner wing which receives the dowel when the wing is attached. I then secured the brass tubing with epoxy to ensure it does not move.
Craig
Attachments
You can see how far the ailerons extend
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Epoxy filled to secure the brass tube, made a balsa box to contain the epoxy
I hope to post more pictures of my build in the next week or so. Have been working on a few things and need to update. On another note, I am still wondering what spinners you guys are using, in particular the dia of the spinners. Thinking I may make a cowl plug and pull my own cowls.
Before I sheeted the bottom of the wing, I made up the support rails for the servo covers. After covering I marked the location with an X so I knew where they were. Total of 8 hatches in the wings, 4 X flaps, 2 X ailerons, and 2 for the attachment bolts. I cut out the balsa with a hacksaw blade and trimmed them flush.
I did not glue the sheeting to the rails when applying it. I made a 1/4 inch spacer tool, with tabs so I can cut into the sheeting allowing a 1/4 lip for the covers. Using a ruler and razor blade I cut out the balsa, the pieces just popped out nicely. I then applied thin CA to affix the sheeting.
Worked on the balance tabs for the ailerons, have cut them out, and have glassed the ailerons. Have also applied primer to the ailerons and wing tips, have also sanded them down, they are looking good so far. Will post a picture of the primed wing tips later. Have also made the fake aileron hinge brackets that are located on the tops of the wing. My plan right now is to make the balance tabs functional.
Center section of the fuselage has been sheeted, and glassed, primed, and next will be laying up a glass cover for acces to the wing mounting bolts. I will remove the piece carefully, and if I can use that piece I will, if not I will have a glassed piece to fall back on.
Fantastic project Craig I always look forward to your instalments, keep up the good work and if you ever feel like submitting a build article for the LMA Journal please contact me and let me know.