RE: 1/5 Pepsi Chipmunk - Build
I have just started framing up the wings. As per the instructions, I have laminated ribs 3 and 5 and added the landing gear anchors to rib 3. Also laminated the langing gear block (shown in the photo below).
The lower spar is glued to the spar web before adding the ribs. The next photo shows the ribs and landing gear block dry fitted to the spar web.
Everything fits well so far and the only sanding I have had to do was some minor adjustment of the landing gear block to get a good sliding fit for ribs 2, 3, 4 and 5.
The end of the spar web acts as a dihedral guide for rib 1.
The last photo shows the spar web with the lower spar glued onto the front.
I have decided to use Robart hinge points rather than flat pin hinges. The plans have a good cross section showing where to drill and notch for hinge points.
Ailerons and flaps are built as a part of the wing and then cut away and separated, leading edge caps added to the flaps/ailerons and a capstrip to the trailing edge of the wing. Finally, the flaps are separated from the ailerons by cutting at around rib 6 and both ends capped.
Regards
Ari