Mount The Engine - GREAT PLANES RV-4 Instruction Manual

4. Use a pen to mark the location of each of the three
landing gear mounting holes.
5. Drill a 5/32" [4mm] hole through each of the locations
you marked on the landing gear plate.
6. Locate three 6/32 blind nuts. Apply a drop of medium CA
on the flange, being careful not to get any glue onto the
threads. Then press them into the holes from inside the
fuselage. Position the landing gear over the mounting holes.
Insert a 6-32 x 3/4" [19mm] socket head cap screw and #6
washer through the landing gear and into the blind nut. Tighten
the screw against the landing gear, pulling the blind nut into
place tightly to the underside of the landing gear plate. Do this
for each of the three landing gear mounting screws.

Mount the Engine

1. Cut the "spreader bars" from the supplied Great Planes
motor mount, then use a hobby knife to remove any flashing
leftover from the molding process so the halves fit together well.
2. Draw an angled line from the corner of each of the
engine mounting holes across the firewall. Where the lines
intersect is the center of the engine mount. At the point the
lines intersect draw a vertical line. From the point the lines
intersect draw a horizontal line 1/4" [6mm] above and below
the center as shown in the photograph. These points are
where you will drill two holes for the fuel line to pass through
the firewall.
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