SIG Antoinette 1909, Manual, Page: 19 / 30

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Tip: Put the bottom mounting screw in first! The big gear on the front of the motor partly blocks access to the bottom
mounting screw. So while you still have the motor assembly in your hands, put a screw through the bottom hole of the
plywood motor mount, angling it past the gear. You can flex the plywood mount just enough to get the screw all the way in
the hole, with the head tucked up underneath the gear. Then, hold the motor assembly up to the front of the fuselage while
you thread the bottom screw into F1. Once you have it in, you can put in the other two mounting screws.
Scale Dummy Engine
81.
The scale-like dummy V-8 engine provided with your kit adds a nice look to the finished airplane. The engine is molded
from .010 thick plastic in 3 separate pieces - 1 Crankcase, 1 set of 4 Cylinders for the right bank, and 1 set of 4 Cylinders
for the right bank. Making the engine is not difficult, provided attention is paid to these instructions. Our finished, fully
detailed and painted dummy engine typically weighs just 3 grams!
82a.
Trim out the molded plastic Crankcase, leaving a 1/16" flange on all four sides.
Note: A sharp pair of miniature scissors works great for cutting these light weight plastic dummy engine parts.
b.
Glue the Crankcase in place on the
laser-cut 1/32" balsa Dummy Engine
Base. The back end of the crankcase
(the end with the sharper corners) goes
right along the back edge of the Dummy
Engine Base.
c.
Mark and then, cut off the front end of
the Crankcase vertically, 2-9/16" from
the back end.
d.
Trim out the bottom 1/4" of the back end of the crankcase so that it will clear the
battery pack.
83a.
Bend ENGINE HOOK #1 and ENGINE HOOK #2 out of .020" dia. music wire,
according to the full-size patterns on the plan. Note: Since neither of these hooks
will be seen, they don’t need to be pretty, just functional. If yours don’t match the
plan exactly, don’t worry about it, as long as they do the job.
b.
Glue ENGINE HOOK #1 in place in the Dummy Engine Base. Two small holes
are already laser-cut into the base for the wire hook. Make sure you have the
hook facing the right direction.
c.
Glue ENGINE HOOK #2 in place near the bottom of former F2. Two small holes
are already laser-cut into the former for the wire hook. Make sure you have the
hook facing the right direction.
d.
A small rubber band (not provided) looped between the two engine hooks holds
the dummy engine assembly in place during flight.
84a.
Trim out the molded plastic Cylinders, leaving a small flange all the way around
the perimeter.
b.
Draw a line exactly thru the middle of
the each cylinder bank, and then, cut
them in two.
c.
Hold the cylinder sections in alignment
and tack glue them together with a tiny
drop of Thin CA, placed right on top of
each cylinder. The Thin CA will flow
along the flanges, instantly gluing the
parts together.