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Sand the leading edge of the wing panel flat.
Apply aliphatic resin glue and install the
leading edge. Use pins and tape to secure it
until cured.
Sand the wing tip flat and then install W12.
Secure it with pins and tape until cured.
Sand the root section flat.
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Use a razor plane and sanding block to round
off the leading edge to the desired airfoil
shape. First plain or sand the leading edge to
contour with the ribs and then rounding off
the remaining material easily accomplishes
this.
This completes the assembly of one-wing panel repeat steps 1 through 19 for the second panel. Note that
you will not need to install wing joiners in the second panel.
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Test fit the two wing panels together. They should fit snugly with very little gap at the center. Sand as
required to get a good fit. Apply Epoxy or aliphatic resin glue to all mating parts and then slide the wing
halves together. When cured, apply the 1” fiberglass tape with thin CA.
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Place the finished wing on the bench. Generally one panel will be slightly heavier then the other. Add
weight to the lighter panel until the wing balances.
This completes the wing assembly.
Covering your Li’l Pup.
If you going to fly the Li’l Pup with glow power you will need to cover the entire model to fuel proof it. However
if you are going to fly your Li’l Pup with electric power the only part that must be covered is the wing. The fuse
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lage and empennage can be covered, painted or just left as raw wood if desired.
Follow the instructions supplied with the covering material that you select. It is much easier to cover all the indi-
vidual parts before the final assembly.
After covering you can install and glue the empennage and the 3/16” dowels permanently.
Balancing the Li’l Pup.
To balance the Li’l Pup for first flights, install the Balance Points into the slots provided in the bottom of the wing
just ahead of the spar at W3. Temporarily slide one balance point into each these slots, the model should balance
level when supported on your fingers at these points. Place the wing onto the model and secure it with rubber
bands. If the model does not balance, move the battery pack and controller to achieve balance. In some cases you
may have to ad weight to achieve the correct balance. Make sure that your battery pack and all radio components
are securely fastened before flying your Li’l Pup. Once balance has been achieved you can remove the balance
points.
A strip of fiberglass cloth over the center joint will add consid
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erable strength to the wing. This one was brushed with thinned
Epoxy resin but you can also use thin CA to attach it.
