Great Planes Ultra Sport 40 Kit - GPMA0410 - Manual (Page 26)

15. Harden the threads in the hold-down block with
thin CA glue, then re-tap the threads after the glue is
completely dry.
1/4 - 20 NYLON BOLT
16. Trial fit the wing to the fuse using the two 1/4-
20 nylon bolts provided. You may cut the bolts off to
their properlength, so they protrude about 1/4" below the
hold-down block in the fuselage.
17. Later you will apply foam wing seating tape or
silicone sealer to the wing saddle. To allow space for
this wing cushion material, you may sand the saddle
slightly in the areas where the wing touches the saddle,
to provide a small gap.
18. Sand off the bottom edge ofF-2 and F-2A flush
with the bottom of the chin block base. And, while
you're atit, sand the entire fuse bottom, forward of F-2A,
in preparation for installation of the chin block.
FIT FUEL TANK, and FUELPROOF TANK
COMPARTMENT
4. Drill two holes (7/32" or size to fit your fuel
tubing) near the top ofF-1 for your fuel tubing vent and
fill lines. The location of these holes will depend
somewhat upon the type of engine you are using, etc. It
is OK to drill the holes in the upper left and upper right
comers, but we prefer drilling both holes in the upper
right comer (as viewed from the rear) for easier access.
5. Now remove the engine mount and fuelproof
the inside of the fuel tank compartment and the front of
F-1 by brushing on a coat of polyester resin or 30-minute
epoxy thinned with alcohol. NOTE: Later when install-
ing the nose pieces, you will fuelproof the chin block
before installing it.
1. Assemble your 10 or 12 oz. fuel tank. We
recommend bending the brass tubes as shown in the
photo to prevent them from cutting through the silicone
fuel lines if pressed against the firewall. (Try not to
"kink" the tubes when bending, however).
2. Try sliding the tank in through F-2. If the
opening is not large enough, sand or file the opening until
the tank slides in easily.
3. Temporarily install the engine mount and note
how far the mounting screws protrude into the fuel tank
compartment. Remove the screws and cut them off so
they do not protrude more than 1/8" (to prevent punctur-
ing the fuel tank).
6. You may permanently install the fuel tank at
this time, or you may wait until the plane is nearly
completed. If you do it now it will be easier to feed the
fuel lines through F-1, and to make sure there arc no kinks
in the lines; however, you'll have to work around them
while completing the nose. When you install the tank, be
sure to cushion it from vibration and prevent it from
moving by surrounding the tank on all sides (and front)
with latex foam rubber. Leave a few inches of extra fuel
tubing in front of F-l (you can cut off the excess later).
The photo shows how to route the fuel tubing to prevent
kinking.
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