Great Planes Super Sportster 40 MkII Kit - GPMA0205 - Manual (Page 27)

Roughen the inside of the pants around the gear leg hole,
then glue a die-cut 1/8" ply backing plate to the inside of
each grooved half Roughen the inside of the opposite
wheel pant half but don't glue the outer wheel pant
support in position until final assembly
D D 4 Join the two halves of the wheel pants by holding
them together, then flowing a few drops of thin CA into the
seam. Hold the parts together until the CA cures.
Accelerator will attack the plastic, so avoid using it.
D D 5 Cut out the opening for the wheels on the bottom of
the pants with a sharp hobby knife Round off the inside
edges with a round file or Dremel Moto-Tool" and
sanding drum.
D D 6 The seams should be filled with Automotive body
filler (Bondo) then sanded smooth in preparation for
painting We will cover installation after finishing.
FINISHING
Many surface blemishes on a framed model are caused
by bumps and balsa chips on the work surface This type
of ding" is best repaired by applying a drop or two of
window cleaner or tap water to the blemish, then running a
sealing iron over the spot to expand the wood fibers After
the surface has dried, sand the expanded area smooth
D 1 Fill any scuffs, dings, and the forward end of the
pushrod tube exit slots with balsa filler After the filler has
hardened, cut the pushrod tubes flush with the fuse sides,
then sand the entire structure with progressively finer
grades of sandpaper, ending with 320-grit.
Fuelproofing may be done either before or after covering
D 1. Fuelproof the engine compartment paying special
attention to the firewall K&B paint or 30-minute epoxy is
recommended
D 2 Fuelproof any external exposed wood and the inside
of the fuel tank compartment
SPECIAL NOTE: Do not confuse this procedure with
"checking the C.G." or "balancing the airplane fore and
aft." That very important step will be covered later in
the manual.
Now that you have the basic airframe nearly completed,
this is a good time to balance the airplane laterally
(side-to-side) Here is how to do it
D 1 Temporarily attach the wing and engine (with muffler)
to the fuselage
D 2 With the wing level, lift the model by the engine
propeller shaft and the fin post (this may require two
people). Do this several times.
D 3. If one wing always drops when you lift the model, it
means that side is heavy Balance the airplane by gluing
weight to the other wing tip.
Note: An airplane that has been laterally balanced will
track better in loops and other maneuvers.
The Super Sportster 40 Mk II does not require much
painting to obtain the scheme shown, on the box, as most
of the finish is done with Top Flite MonoKote The only
painting required is for the wheel pants
The technique we will describe here is the how the model
pictured on the box was finished Make sure the structure is
smoothly sanded with 320-grit sandpaper Remove all dust
from the structure with a Top Flite Tack Cloth so the
MonoKote will stick well
Cover the aircraft with MonoKote using the sequence
below Make sure the MonoKote is thoroughly stuck down
to the structure and all of the edges are sealed Use a Top
Flite MonoKote Hot Sock on your covering iron to avoid
scratching the MonoKote.
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