Great Planes Ultra Sport 1000 Kit - GPMA0425 - Manual (Page 35)

FIT FUEL TANK and FUELPROOF TANK
COMPARTMENT
D 1. Assemble your 12 to 16 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 front of the tank
compartment HINT: To avoid kinking the tubes when
bending, we use K&S Tubing Bending Springs.
D 2 Try sliding the tank in through F-2 In the
unlikely event that the opening is not large enough,
sand or file the opening until the tank slides in easily
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 corners, but we prefer drilling both holes in the
upper right corner (as viewed from the rear) for
easier access The holes must be located at least 5/8"
in from the outside edge of the fuse side, to make
room for the 1/2" balsa nose sides
D 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 a small amount of alcohol
NOTE: Later, when installing the nose pieces, you will
fuelproof the chin block before installing it.
D 6 You may permanently install the fuel tank at this
time, or you may wait until the plane is nearly
completed (If your plane is a trike gear you should
wait to install the tank until after you have made
the final installation of the nose gear). If you do it
now it will be easier to feed the fuel lines through F-1,
and to make sure there are no kinks in the lines,
however, you'll have to work around them while
completing the nose Install the tank as low as
possible in the fuse, and 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 several inches of extra fuel tubing in
front of F-1 (you can cut off the excess later) NOTE:
If you are using one of the lighter engines such as the
OS 1 08 FSR, it may be necessary to add weight to
the nose to balance In anticipation of this, you should
install the battery pack under the fuel tank at this time
D 3. Temporarily install the engine mount and note
how far the mounting screws protrude into the fuel
tank compartment Glue blocks of scrap balsa to the
back of the firewall to prevent the tank from coming in
contact with the engine mount screws Of course,
these blocks must not interfere with the installation
and operation of the nose gear strut
INSTALL CHIN BLOCK
PARTS NEEDED-
D (2) US10F22 Shaped 3/4" Balsa Chin Block Halves
NOTE: At this point you will install the chin block on
the bottom of the fuse leaving it oversize in front (we'll
come back to that part later), and shaping it in the
area of F-2 This will permit you to install the wing
belly fairing while it is still possible to place the fuse
upside down on a flat surface.
D 4 Drill two holes (7/32 or sized to fit your fuel
tubing) near the top of F-1 for your fuel tubing vent
D 1 Sand the fuse bottom forward of F-2A, in
preparation for installation of the chin block
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