24
Photo # 44
o
6) When satisfied with the alignment, install
the servo arm set screw and remove the masking
tape from the ailerons.
PARTS REQUIRED
COWL INSTALLATION
INSTALLING THE COWL VENTS
o
{1} Molded Fiberglass Cowling
o
{2} Plastic Molded Cowl Vent Sets
o
{4} 2mm x 6mm Wood Screws
o
1) Using a Dremel Tool with a cutting disc
attachment, carefully cut out the six separate sec-
tions of the cowling that accept the molded cowl
vents. Carefully cut out each section along the
molded scribe lines in the cowl. Three sections
are located on each half of the cowl.
o
2) Using a modeling knife, cut out each of
the six molded cowl vent sections. Leave about
1/8” of plastic around each section.
The vents will be glued from the inside of
the cowl. Leaving a 1/8” lip around each
section provides a good gluing surface.
o
3) Using a modeling knife, carefully cut out
the rear section of each vent. See photo # 45
below.
This is time consuming, however it will re-
sult in much better cooling of your engine
and is highly recommended.
Photo # 45
o
4) Using 220 grit sandpaper, roughen the fi-
berglass inside the cowl where the vents will be
glued in place. Also roughen the 1/8” lips around
each of the vents.
o
5) Trial fit each of the vents into the cowl.
The vents are installed from the inside of the cowl
and the holes in the rear of the vents should face
the rear of the cowl. Make any adjustments nec-
essary to achieve a good fit.
o
6) When satisfied with the fit, mix up a gen-
erous amount of Kwik Bond 5 Minute Epoxy.
Carefully apply a thin layer to the lips surrounding
each vent. Working one at a time, apply the ep-
oxy and install the vents. Use masking tape to
hold the vents in place until the epoxy cures. See
photo # 46 below.
Photo # 46
INSTALLING THE COWL
o
7) Remove the carburetor and muffler from
the engine. Use plastic or masking tape to cover
the carburetor, muffler and glow plug openings in
the engine to prevent dust from entering.
o
8) Trial fit the cowl onto the fuselage. When
aligned properly the back edge of the cowl should
be flush with the font of the cowl ring on the fuse-
lage. You may have to lightly sand the corners of
the plywood engine mounting box to allow the
cowl to slide on without binding. Locate and mark
the area of the cowl that needs to be removed for
engine cylinder head clearance using a pen.
o
9) Remove the cowl and make the cut out
using a Dremel Tool with a sanding drum attach-
ment. Cut out a small amount at a time and trial
fit the cowl after each cut. Repeat until you are
satisfied with the cut out.
o
10) When satisfied with the fit of the cowl
slide it onto the fuselage and hold it in place with
masking tape.
CONTROL
HORN
CLEVIS
PUSHROD
WIRE
SNAP
KEEPER
COWL
VENT
CUT OUT
