Model Shipways 28 - Manual (Page 6)

Crankcase; camshaft box; distributor:
Assemble the engine around the crankshaft mount(GR9-01).
This will ensure that the parts line up properly. Be careful not
to get any glue inside the crankshaft mounting tube.
Begin by attaching the distributor(GR9-09) to the crankshaft
mounting tube(GR9-01) so that the tube end is flush with the
gear side of the distributor. Slip one of the crankcase
covers(GR9-07) onto the tube so that the detail side faces the
distributor and line it up so that the nine rings on the distributor
point between pairs of bolt heads. Next, slip on the
crankcase(GR9-08) and the other crankcase cover. Glue the
crankcase to the rear cover so that the drilled tabs on the dis-
tributor will line up between each pair of cylinders(Fig.1/13).
Before you glue on the front crankcase cover, align its bolt
heads to match up with the ones on the rear cover.
Add the camshaft box(GR9-06) on the front of the crankcase,
aligning the pegs dead center on each piston, slide the timing
gear cover(GR9-05) onto the tube and then glue these parts
together. Next, slip the nine cylinders(GR9-10) over the pistons
and glue them in place, paying attention to the orientation of
the spark plug ports. From the pilot’s point of view, they are at
the outer end of the cylinders, in the plane of the engine, facing
to the right. Glue in the spark plugs(GR9-13).
Attach the cylinder heads(GR9-11) to the cylinders so that the
peg on each lines up with its twin on the camshaft box. Make
any needed adjustments to fit the exhaust valve lifters(GR9-12)
between the pegs. Paint, weather, and highlight the motor,
should you wish to do so.
Complete this step by attaching the ignition wires(WP———
-) from the distributor to the spark plugs, referring to Figures
1/11-1/13. Cut nine 55mm lengths of wire. Thread each wire
through one of the nine tabs on the distributor so that equal
lengths emerge from each side. Twist the wire twice around
itself at the ring, then run one end to each of the spark plugs at
that cylinder and attach as in Figure 1/13. Trim off any excess
wire.
Propeller group:
Referring to actual-size Plan D04 in the instruction booklet,
laminate the three propeller layers(GR9-03), using the provided
bolt-and-nut jig(J001) to properly align the parts. Once the glue
is dry, remove the bolt and file and sand the propeller to its
refined shape. The front of the laminated propeller is stepped to
guide you in filing the correct shape. The back is then shaped
to follow the front. Begin with the overall lengthwise curve,
then proceed to the cross-sectional shaping. Note that the front
surface is slightly convex and the back surface is concave. Take
your time and check the cross sections on the plan often. When
you are satisfied with the result, apply at one thin coat of var-
nish or shellac. After the first coat is dry, lightly sand it with
#400 paper to remove any grain raised by the varnish, then
apply a gold-mahogany stain. When dry, follow this with a sec-
ond coat of varnish or shellac. You can add a third coat of var-
nish, without sanding first, if that looks better to you.
Paint, if desired, the front(GR9-02) and rear(GR9-04) pro-
peller flanges before fitting them to the propeller. Referring to
Figure 1/7, line up the molded-on front and rear bolt heads/nuts
before gluing the flanges to the propeller. Dry fit this assembly
onto the crankshaft mount. If necessary, file the end of the
brass tube so that the propeller assembly snugs up to the timing
gear cover, then, glue it in place.
6 6
PARTS LIST FOR STAGE 1:
GR9-01 Crankshaft mount 1 4mm diameter x 5mm brass tube
GR9-06 Camshaft box 1 Britannia casting
GR9-07 Crankcase covers 2 Britannia castings
GR9-08 Crankcase 1 Britannia casting
GR9-09 Distributor 1 Britannia casting
GR9-02 Front propeller flange 1 Britannia casting
GR9-04 Rear propeller flange 1 Britannia casting
GR9-03 Propeller (laminated) 3 Parts of laser-cut basswood 1/8” thick
J001 Propeller jig 1 1/4” X 20 bolt and nut
GR9-05 Timing gear cover 1 Britannia casting
GR9-10 Cylinders 9 Britannia castings
GR9-11 Cylinder heads 9 Britannia castings
GR9-12 Exhaust valve lifters 9 Britannia castings
GR9-13 Spark plugs 18 Britannia castings
WP—— Ignition wires 9 32-gauge black iron wires
S Stta ag ge e 1 1:: B Bu uiilld diin ng g tth he e E En ng giin ne e S Stta ag ge e 1 1:: B Bu uiilld diin ng g tth he e E En ng giin ne e