Installing the cowl – Great Planes Fokker Dr-1 60 ARF - GPMA1380 User Manual
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1. Mix a small amount of epoxy and glue four of the
13/16" x 3/4" x 3/8" [20mm x 18mm x 10mm] hardwood blocks
on the firewall flush with the oustide edge of the fuselage as
shown. The grain should be horizontal.
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2. Cut the bottom of the fiberglass cowl open. If you use a
high speed rotary tool, this job will be much easier. Cut out the
openings in the front of the cowl. Test fit the cowl on the
fuselage. Temporarily install a prop on the engine and see if
there is enough clearance between the prop and the cowl. Trim
the cowl until you are satisfied with the fit. Remove the cowl.
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3. Add an extension to the needle valve. A left-over piece
of the metal pushrod from the radio installation will work well
for this. Use paper strips to mark the location of the cowl
mounting blocks, needle valve and engine glow plug access
(if necessary). Remove the needle valve.
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4. Drill 1/16" [1.6mm] holes through the cowl and through
the blocks for the cowl screws. Attach the cowl to the
fuselage using four #2 x 3/8" [9.5mm] screws and four #2
washers. Use a rotary tool to drill a hole for the extended fuel
needle and the engine glow plug access if necessary. Again,
make sure you have enough clearance between the prop
and the cowl.
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5. Remove the cowl and wick some thin CA into the holes in
the hardwood blocks and let harden. Reinstall the needle valve
extension, attach the carburetor fuel line to the carburetor and
the vent line to the muffler. Use one of the Great Planes
aluminum line plugs to plug the filling line. Reinstall the cowl.
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6. Now it is time to install the dummy engine. Find the
two-piece dummy engine. Cut the ABS plastic at the cut
lines. Glue the two parts together. Note: The dummy engine
will be black.
INSTALLING THE COWL
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