Dynaflite DYFA3045 - Manual (Page 31)

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1. Mount the engine mount to the firewall
with four 8-32 x 1" [25mm] SHCS, #8 lock
washers and #8 flat washers and adjust it to fit
your engine. Position the engine on the mount
so the propeller (or a flat piece of wood with a
hole drilled in it) will be 1/2" to 3/4" [13 to
19mm] from the front of the fuselage.
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2. Use a Great Planes Dead Center ™ Hole
Locator (GPMR8130-shown in the photo) or
your own preferred method to mark the
locations of the holes for mounting the engine.
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3. Remove the engine and the engine mount
from the firewall. Drill #36 (or 7/64" [2.8mm])
holes through the mount at the marks, then tap
6-32 threads into the holes. Mount the engine
mount to the fuse, but center the mount on the
screws (the mount may have some side-to-side
play) before fully tightening them. Mount the
engine to the mount with 6-32 x 1" [25mm]
screws and #6 lock washers and flat washers.
Now that the engine is mounted, go ahead and
hook up the throttle and do the rest of the
hookups while the engine compartment is open
and easily accessible.
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4. Refer to the side view of the fuselage plan
and glue pieces of 1/8" x 1/2" balsa (left over
from making the fuselage sides) to the top of
both sides of the opening in the fuselage top for
the servo screws.
Refer to these photos while hooking up
the throttle.
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5. Plan the throttle hookup. The throttle servo
may be mounted on either side of the
fuselage–whichever aligns best with the
carburetor arm on the engine. Use a 3/16" [4.8mm]
brass tube sharpened on the end or an extended
3/16" [4.8mm] drill to drill a hole through the
firewall for the throttle pushrod tube.
❏
6. Use one of the leftover 5-1/2" [140mm]
pushrod tubes for the throttle. Slide the tube
into place. Hook up the throttle using a 2-56 x
MOUNT THE ENGINE
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