Top Flight Top Flight, Inc. Baby Toy MK IX Manuel D’Utilisation
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10. Blend the fillet to the fillet base and the
fuselage with automotive Bondo, Squadron white
or green putty or an other suitable filler. Sand
when dry.
or green putty or an other suitable filler. Sand
when dry.
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11. Blend the bottom portion of the fillet to the
fuselage with lightweight balsa filler.
BUILD THE BOTTOM WING FAIRING
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1. Cover the bottom of former 1 with leftover
3/32" [2.4mm] cross-grain balsa.
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2. Glue both 5/8" x 1-5/8" x 3-1/4" [15.9 x 41.3 x
83mm] balsa blocks together to make one 5/8" x
3-1/4" x 3-1/4" [15.9 x 83 x 83mm] wing
fairing block.
3-1/4" x 3-1/4" [15.9 x 83 x 83mm] wing
fairing block.
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3. Carve the block to the
approximate shape
shown on the plans and in the following photo, but
leave it slightly oversize so you can final shape it
after you glue it to the wing.
leave it slightly oversize so you can final shape it
after you glue it to the wing.
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4. With the wing bolted to the fuselage, glue the
wing fairing block to the wing. Shape the wing
fairing block as you simultaneously blend it to the
fuselage and the wing. Fill the small gap between
the leading edge of the wing and the fuselage with
leftover balsa. Remove the wing and finish the job
with a little balsa filler, sanding as needed.
fairing block as you simultaneously blend it to the
fuselage and the wing. Fill the small gap between
the leading edge of the wing and the fuselage with
leftover balsa. Remove the wing and finish the job
with a little balsa filler, sanding as needed.
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5. Now that the fuse is nearly complete, mount
a 1-1/4" [32mm] tail wheel to the tail gear and
mount the wing to the fuse. Set the model on its
wheels and make sure both wing tips are the same
distance from the ground. If they are not, adjust
the axles on the main landing gear wire until the
wing tips are equal distances from the ground.
mount the wing to the fuse. Set the model on its
wheels and make sure both wing tips are the same
distance from the ground. If they are not, adjust
the axles on the main landing gear wire until the
wing tips are equal distances from the ground.
NOTE: If any adjustments need to be made, try to
split the difference between both gears. As a final
check, retract the wheels to make sure they both fit
into the wells without interference.
split the difference between both gears. As a final
check, retract the wheels to make sure they both fit
into the wells without interference.
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6. Cut the landing gear wires so they are flush
with the bottom of the axles.
MOUNT THE ENGINE AND COWL
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7. If you haven’t done so already, trim the
fuselage sheeting even with former 1. Bolt the
wing to the fuselage. Test fit the laser-cut 1/8"
[3.2mm] plywood wing dowel doubler to the front
of former 1 over the wing bolts as shown on the
plan. Glue the doubler to former 1, but remove the
wing and use clamps to hold the doubler in
position while the glue dries.
wing to the fuselage. Test fit the laser-cut 1/8"
[3.2mm] plywood wing dowel doubler to the front
of former 1 over the wing bolts as shown on the
plan. Glue the doubler to former 1, but remove the
wing and use clamps to hold the doubler in
position while the glue dries.
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8. Glue the die-cut 1/8" [3.2mm] plywood tank
roof into the fuselage.
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9. Test fit your fuel tank and determine where to
drill the holes in the firewall for the fuel lines.
Before you drill the holes, make sure the engine
mount will not cover them. Drill 1/4" [6.30mm] (or
15/64" [6.00mm] for a perfect fit) holes in the
firewall for the fuel lines to pass.
Before you drill the holes, make sure the engine
mount will not cover them. Drill 1/4" [6.30mm] (or
15/64" [6.00mm] for a perfect fit) holes in the
firewall for the fuel lines to pass.
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10. Glue the firewall to the fuselage with
30-minute epoxy. Hold it in place with clamps and
masking tape until the epoxy cures.
masking tape until the epoxy cures.
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11. Temporarily mount the engine mount to the
fuselage with four 8-32 x 1-1/4" [32mm] socket
head screws, #8 lock washers and flat washers.
Place your engine on the mount with your spinner
backplate in position. Cut a leftover balsa stick to a
length of 6" [152mm] and use it as a
head screws, #8 lock washers and flat washers.
Place your engine on the mount with your spinner
backplate in position. Cut a leftover balsa stick to a
length of 6" [152mm] and use it as a
gauge to
position the engine so the back plate of your
spinner (on both sides) will be 6" [152mm] from the
firewall. Use a small C-clamp to hold your engine
to the mount while you mark the locations of the
mounting bolts.
spinner (on both sides) will be 6" [152mm] from the
firewall. Use a small C-clamp to hold your engine
to the mount while you mark the locations of the
mounting bolts.
Hint: Heat the end of a pointed wire with a torch and
dimple the engine mount in the center of each hole.
dimple the engine mount in the center of each hole.
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12. Remove the engine from the mount and drill
four #29 [3.40mm] (or 9/64") holes at the marks. Tap
8-32 threads into the holes and mount your engine
with four 8-32 x 1" [25.4] socket head cap screws.
8-32 threads into the holes and mount your engine
with four 8-32 x 1" [25.4] socket head cap screws.
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