Carf-Models Composite-ARF Extra 300L Instruction Manual page 14

Composite-ARF Extra 300L (2.12m/84")
techsupport@composite-arf.com
overlap outside the line all around. Unless you are in a warm room, we recommend that the
canopy is slightly warmed up with a hair dryer to prevent cracking - but be careful not to melt or
deform it!
With the canopy frame fitted to the fuselage, tack the canopy into position with a couple of very
small drops of 'odourless' CA, at the back lower corners and at the front centre also. You can
make some 'handles' from strong tape (see photo) to allow you to 'pull' the canopy in position
while you do this. When the canopy is tacked into the frame, and it cannot twist any more, you
can carefully remove the compete canopy frame and secure the inside edge of the clear canopy
with a small bead of 30 minute epoxy and microballoons. Alternatively you can use a specialist
canopy glue that dries clear and bonds well the the clear plastic. We have used the ZAP 'Formula
560' canopy glue with good success, and any drips of drops can be cleaned up with water before
it cures. Whichever method you chose, make sure to secure the canopy frame in it's final posi-
tion on the fuselage while the glue dries to ensure that nothing can deform.
Cowling
Attaching the 1 piece cowling is easy, as it is
already cut and trimmed at the factory. We sug-
gest that you fit this now, and make any cutouts,
cooling and access slots after you fit the motor.
The cowl is secured to the fuselage with six M3
x 12mm bolts, and six T-nuts that are glued to
the inside of the horizontal flange on the fuse-
lage. Additionally you should add 2 small pheno-
lic tongues at the back lower corners of the fuse-
lage lip to maintain alignment, and prevent any
rubbing or damage due to vibration (see photo).
Fit these in the same way as for the canopy
frame.
Sand or scrape any seams on the fuselage and
cowling that might prevent it sitting perfectly
flush. File a notch in the back flange of the cowl-
ing to allow it to fit over the flange on the fuse-
lage. Sand the inside surface of the flanges on
the fuselage. Now carefully wax all around the
mating surfaces of the fuselage and cowling in
case you should get some glue on there during
the next steps.
Tape the cowling firmly into position on the fuse-
lage. Drill 6 holes of Ø 3mm through the cowling
and flanges of the fuselage as shown. Space the
holes about 65mm (2.5") apart, and 6mm (1/4")
from the edge of the cowling.
Apply some wax or thin oil to the M3 bolts and
push them into the 3mm holes. Reach thru' the
front of the cowling and screw the T-nuts into
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