Top Flite TOPA0405 - Manual (Page 37)

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14. Drill a 3/32" hole into the elevator for the
torque rod, perpendicular to the LE. Make a slot
large enough to clear the torque rod from the 3/32"
hole to the root end of the fillet block.
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15. Reinstall the elevator and fillet block. Glue
the fillet block to the fuse. Remove the elevator and
1/32" plywood spacer from the fillet block.
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16. If you want to modify the elevator for the
scale balance tab, now is the time to add the
appropriate structure. We made our balance tab
from leftover 3/32" balsa sheeting and 1/8" balsa
from the die sheets.
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17. Go back to step 2 and construct the
other elevator.
NOTE: Make sure to construct it over the other
elevator plan.
ENGINE INSTALLATION
FUSELAGE COMPLETION
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1. The firewall F-1A has punch marks to locate
the centerline of the engine. Notice that the punch
marks for the vertical line are offset to allow for the
right thrust of the engine.
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2. Glue the die-cut 1/8" plywood former F-1E
into the notches in F-1B. Lay a straightedge along
the face of F-1B/C to make sure F-1E is flush with
F-1B/C.
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3. Use 30-minute epoxy to glue the firewall
F-1A to F-B/C/E on the front of the fuse.
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4. Mount the engine using the instructions that
came with your engine mount. We strongly
recommend that any engine used on the Giant
P-51B be installed on an isolated engine mount.
The use of this type of engine mount will help
prevent damage to the radio system and the
airframe due to engine vibration. The back of the
spinner should be spaced 7-7/8" from the
firewall no matter what mounting method is
used. Spacers made from 1/4" plywood work well
for spacing the engine away from the firewall.
Center the engine mount on the horizontal
centerline and the offset vertical line.
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5. Place the throttle servo on the forward servo
rails. Make a mark on the firewall in line with the
throttle arm for the throttle pushrod exit. Remove
the engine and drill a 3/16" hole at the mark. Insert
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