Motor Installation: Da-100L Or 3W-110Ib2 An Similar Boxer Motors; Installing The Plywood Bulkhead In The Fuselage - Carf-Models SIAI Marchetti SF-260 Construction Manual

CARF-Models
3.2.2. Motor Installation: DA-100L or 3W-110iB2 and similar Boxer Motors
For true power flying and towing larger sailplanes, there is only one alternative to the 4-
stroke, the gasoline fueled, 2-stroke Boxer! The motors are light, easily maintained, powerful
and, once tuned, need little further attention. As an example, we have documented the
installation of the 3W-110iB2. The installation guide is being prepared and will be
released shortly as an addendum.

3.2.3. Installing the Plywood Bulkhead in the Fuselage

The bulkhead is positioned 7.5cm below the "windowsill" of the windshield, oriented level in
all axis. In conjunction with fuselage air intake, we recommend fitting a screen filter over the
carb intake. A simple solution is to attach the screen directly (flat) over the opening in the
SIAI Marchetti SF-260
motor dome bulkhead. Ideally, the Moki air filter
would be used. Its size, however, presents
clearance issues with the nose gear retraction.
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After mounting the motor, we
recommend that the large plywood
bulkhead (for securing the tank and
other items) be installed in the proper
position. Beforehand, the location for
the throttle servo and the (optional)
choke servo must be marked and cut
out.
The frame for the fuel tank (in parts
pack) is to be glued to the bulkhead.
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