When is all looks according to the plans, it’s time to get the glue. First glue in 531. Take care it is glued in square, and don’t move/force 518. Observe the 90-degree angle between 531 and 518. Once the glue is set it is time to add 529/530. After the glue is dry, add the spars 538/539.
When the whole assembly is dry, you can remove it from the fuse. Take you time here to let things dry properly, leave it a day extra, or put it back in it’s place when you are not working on it. It will keep things square.
(Note, this part will be glued permanently to the fuse at a later stage)
Next, degrease the glassfibre tube.(540) and roughen up the tube at the positions of the ribs. Next insert the tube, WITH alutube inside!! through the holes. The ends, 230, that will be built into the wing, can be removed for now.
Using a twisting movement, the tube should slide into the holes.
Now it’s measurement time! Measure the distance to the building board on both sides. It should be approx 260 mm. It’s more important that both sides are the same then that they are 260mm. (Do make sure the tube protrudes the same distance on both sides. And if in doubt, turn the fuse 180 degree and repeat. And measure 3 more times, just to be sure to be sure.
The dihedral is automatically built into the wing through the ribs, and the wing-incidence is set with the fuse sides, it’s almost (but not impossible) to get this wrong.
After the holes have been drilled, the undercarriage can be put back into it’s proper position again, and supports 547 can be screwed into place. I would recommend securing the nuts. For this I glue a suitably cut out piece of ply over the nut, that way it can never get loose again. (hint, ask your local cnc gury to cut them for you)
Now it is time to add the structure between the undercarriage wires. For this we have to add part 551 between the front 8mm and rear 4mm wires. Because of the tube on the lower part of the front wire, part 551 must be slightly cut back here. When the center parts fit, you can slide the hardwood parts 552 over the rear wire and over 551. You can also add the balsa parts 553 (2 left and 2 right) over the front wire and the centre part 551. You must make sure that the these wooden parts do not touch the fuselage, and that it stays free. The undercarriage needs some ‘air’ to work. When everything fits, all parts can be glued together. After the glue has set, the filler pieces 554 can be added to the hardwood covering the rear wire, and also supports 555. The front parts can be sanded to the contour of the glass sleeves 556.
Both parts, top and bottom must be carved in slightly (3mm) to allow for the diagonal bracing. When the glass sleeves 556 can be slid over the leg, the rest of the wood can be sanded into contour. Be sure to note that the lower part is slightly conical. Don’t glue the fibreglass sleeves yet!
Before glueing the parts, make sure the inner wheel pant support 557 and the wheel pants 558 fit properly.
On ONE side of the pants, you have to drill a 10 mm hole for the wheel axle. (Be careful the to drill a left and a right one!) Slide the bottom part of 556 in the top part. You might need to cut back the lower part so that it fits properly into the top half and can be slid into the wheel cover support 557.