Dynaflite Original - Manual (Page 3)

8. Taper the outboard end of the 1/4" I.D. brass wing-wire tubes as shown
on section R-R. This will permit the proper angle of dihedral. Sharpen
the end of one tube and drill a hole in the proper location in the root
AA rib so the tube will Just touch the top spar. Roughen the outside of
the tubes with sandpaper. Using the piece of 3/8" sq. X l8" balsa, make
the fillers that support the brass tube. Make sure the top filler does
not protrude into the spar area. Set aside for now.
9. Put the top inboard spar in place but do not glue. Epoxy the 4
plywood shear webs to the lower spar and 3/8" shear webs using 5 minute
epoxy. Wipe the epoxy out of the top spar area and remove the top spar
before the epoxy sets up so it won't stick.
10. Make up 3 shear webs from scrap l/l6" balsa to fit between the spars
in the second and third bay which have no plywood shear webs. These will
act as dams to prevent epoxy from running out of the wing tube cavity.
Fasten these in place with Cyanoacrylate. Using a liberal quantity of
5 minute epoxy, install the filler blocks and tube from step 8. Make
sure the epoxy does not protrude into the spar area. Epoxy top spar
in place.
11. Cut the remaining 4 AA and 1 A ribs to fit and install with Cyanoacry-
late. Install outboard ribs B through K and pin rear to worktable. Use
a piece of trailing edge stock to raise the lower leading edge forming
the "Philllp's entry". Do not install A rib at polyhedral Joint, yet.
12. Epoxy the trailing edges to the ribs. Note that the short trailing
edge at the polyhedral joint is made from the piece of 1/4" X 1 1/8" balsa.
13. Trim the outboard lower sheeting and the outboard spar to fit the
formed wingtip. Note that there is no rib at the tip. The tip block
is to be carved to the section shown. Glue wingtip and tip gusset in
place.
14. Using scrap l/l6" sheet, trim 3 shear webs and install in the
outboard panel as shown.
15. Using Titebond or white glue, run a liberal fillet around each rib
at the lower sheeting.
16. Remove the outer panel from the worktable, sand trailing edge to
proper angle and check that the polyhedral brace does not interfere
at rib B. Block the tip to the proper height. Using 5 minute epoxy,
glue the polyhedral brace to the outer spar and Join the trailing edges.
Trim the last rib A to fit at the polyhedral Joint and epoxy it and the
two plywood gussets in place.
17. Trim one of the l/l6" X 3 5/8" balsa sheets to 24". Glue this
inboard top L.E. sheet being extremely careful that the sheeting is
snug to the rib all the way to the foreward edge. Use lots of pins.
Using the remainder of the l/l6" X 3 5/8" sheet, cut the top inboard
sheeting to shape and glue in place. Trim and glue the 1/16" X 1/4" cap
strips
2.