Engine Cowling - Carf-Models SIAI Marchetti SF-260 Construction Manual

CARF-Models

3.4. Engine Cowling

The cowling is a two part affair, split horizontally into an upper and lower section. The
mounting holes are pre-drilled and require no further work. This type of cowling makes
getting at the motor easy without having to remove the prop and spinner. It also makes
motor installation and alignment easier.
First trim out the drive opening just large
enough to allow passage of the drive washer.
Mark out an approx. 75mm circle, centered
around the prop shaft, remove cowl and trim
out the the opening to the line. Use masking
tape over the area to be trimmed to prevent
the painted surface from chipping.
And this is the way it should look!
SIAI Marchetti SF-260 www.carf-models.com
The horizontal separation line is also on the
centerline of the opening for the propeller
drive washer/shaft.
A good way to get a clean opening, is to use
a sandpaper roll – somewhat slow, but
accurate and easy on the paint. Or, if you've
a steady hand, a rotary grinder will make
short work of it.
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