Top Flite TOPA0220 - Manual (Page 41)

MOUNT THE ENGINE
❏ 1. Install the engine mount on the firewall, if it is
not already in place. Position your engine on the
engine mount with the spinner backplate in position
firmly against the engine drive washer. The rear of
the spinner backplate should be 4" [102mm] from the
firewall. Clamp the engine in position and mark the
locations of the mounting bolts.
Hint: The Great Planes Dead Center ™ tool makes
marking the mounting holes fast, easy and accurate.
❏ 2. Drill tap holes in the mount for the included 6-32
mounting bolts. Tap the holes with a 6-32 tap. Mount the
engine to the mount with four 6-32 x 1" socket head cap
screws, #6 lock washers and #6 flat washers.
INSTALL THE ENGINE COWL
❏ 1. Cut the molded right and left ABS cowl halves
along the cutlines. Hobbico (HCAR0667) or Kyosho ®
(KYOR1010) curved plastic cutting scissors work
well for this. True any jagged edges with a bar sander
and 80-grit sandpaper.
❏ 2. Thoroughly sand the inside and the outside of
the joining edges of both cowl halves with 150 to
240-grit sandpaper. Basically, you should sand
everywhere you want glue and filler to adhere,
including a 1" [25.4mm] wide strip along the inside
joining edges of both cowl halves.
❏ 3. Join the cowl halves and hold them together
with masking tape. Trial fit the cowl on the front of the
fuselage. Put your spinner backplate on your engine.
Align the front of the cowl with the spinner backplate.
The cowl should fit the front of the fuselage without
being loose. If it is loose, remove the cowl and trim
the edges where the left and right sides join together.
Trial fit the cowl in place again and continue trimming
until it fits properly. Use a pencil to lightly mark the
location of the rear of the cowl on the fuselage.
Remove the cowl and note the amount of overlap on
the fuselage, it should be at least 1/4" [6.4mm].
❏
4. Glue the cowl halves together with thin CA or
epoxy and the included 1" [25.4mm] wide fiberglass
tape. Glue the tape along the joining seams on the
inside of the cowl. Thoroughly sand these areas first
for a good bond. If you use thin CA, make sure you
do this in a well ventilated area and avoid inhaling
the fumes. Avoid using accelerator as it may soften
the plastic.
❏ 5. Using the amount of overlap as a guide, mark
four locations on the cowl sides for the cowl
mounting holes. Place the holes so that the screws
will go into the center of the 1/4" [6.4mm] firewall.
Drill 1/16" [1.6mm] holes in the cowl at the hole
locations. Position the cowl on the fuselage and mark
the location of the four holes on the fuselage.
Remove the cowl and insure that the holes will go
into the center of the firewall. Adjust the holes in the
cowl as needed.
opening in the top sheeting for the servo being
careful not to go beyond where the fuselage side
will be. Mount the servo, using the screws,
grommets and eyelets supplied with the servo, to
basswood blocks (not included) that are glued to
the bottom sheeting. Install screw lock connectors
on the servo arm. Fit, adjust and install pushrods
to the retract units.
❏ R14. Go back to page 41 step F4 and install the
tail wheel.
-41-