Great Planes Ultra Sport 40 Plus Kit - GPMA0390 - Manual (Page 11)

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17. Cut six 3/4" x 1" [19mm x 25mm] hinges from the CA
hinge strip. Snip off the corners so they go in easier.
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18. Drill a 3/32" [2.4mm] hole 1/2" [13mm] deep in the
center of the hinge slot. This will help the glue to better
saturate the hinge and the wood when the hinges are
installed.
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19. Bevel the L.E. of the elevator halves as shown on the
plan cross section.
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20. Test fit the stab, hinges and elevator halves together.
IMPORTANT: Do not glue the hinges in place. This will
be done after the model has been covered.
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21. Drill 1/16" [1.6mm] the holes for the control horns on
both elevators as indicated on the elevators plan. Wick some
thin CA into the holes.
❏
1. Unroll the wing plan. Pin the die-cut 1/8" [3.2mm] balsa
fin base (FB) onto the plan and build the fin outer structure
Build the Fin & Rudder
To cut the hinge slot, place the blades onto the wood
where you want the slot. Lightly press the teeth into the
wood. When you are satisfied with the location, press the
button on the handle and the blades will cut easily into the
balsa wood.
We have simplified the task of cutting hinge slots with the
introduction of the Great Planes Slot Machine
™ . This
simple electric tool cuts a perfect width slot for use with
CA hinges.
1" [25mm]
3/4" [19mm]
Trim the Corners
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