10
Mount a Glow Engine
If installing a brushless motor, skip to
Assemble the EP
Motor Mount Box
on page 12.
The engine illustrated in the instruction manual is mounted
inverted. This is the easiest, most-convenient and most-
streamlined way to mount the engine, but the exhaust is
aimed directly at the wing. This presents no problems, but
you should have plenty of paper towels and cleaner on-hand
to wipe off exhaust residue after each fl ight. The engine could
also be mounted upright, but much of the cowl will have to
be cut away for the engine, and exhaust will still be deposited
on the fuselage.
❏
1. If mounting your engine inverted as shown, drill a 3/16"
[4.8mm] hole through the fi rewall at the “+” mark in the left
side of the fuselage (the same side of the fuselage as the
throttle arm on the carburetor on the engine). If mounting your
engine upright, drill the hole through the “+” mark through
the fi rewall on the right side of the fuselage.
❏
2. Temporarily fasten the engine mount halves to the
fi rewall with four M3 x 25 Phillips machine-thread screws,
M3 lock washes and fl at washers, but do not fully tighten
the screws yet.
❏
3. Place your engine on the mount. Adjust the width of
the mount halves to fi t your engine, then temporarily tighten
the screws.
❏
4. Slide the engine forward or back so the drive washer
(or the back plate of your spinner) will be 4-1/2" [115mm]
from the fi rewall
.
❏
5. Use a Great Planes
Dead-Center
Hole Locator or similar
tool to mark the engine mount screw holes onto the engine
mount. Remove the engine mount from the fi rewall.
❏
6. Decide what size screws you want to use to hold your
engine to the mount. M3 x 12 Phillips machine-thread screws
are supplied, but will require a M3 tap. If you already have
a 4-40 tap, then 4-40 x 5/8" screws (not supplied) may be
used instead. If using the supplied M3 x 12 screws, drill
2.4mm [.096" (#41)] holes through the marks made in the
mount for the mounting screws. If using 4-40 screws, drill
#43 or 3/32" holes through the marks made in the mount for
the mounting screws.
