O.S. Engines FS-40S - Manual (Page 9)

INSTALLATION
How to fasten the mounting screws.
Hardwood mounting beams
O.S. radial motor mount
(cast aluminum)
Tighten second nut firmly
down onto first nut.
Tighten this nut first.
Steel washer
3.5mm steel nuts
for FS-40S
Spring washer or
lock washer
Hardwood such as
cherry or maple.
Spring washer
3.5mm steel Allen screw
for FS-40S
Front view
CORRECT
Side view
Top surfaces are in
the same plane. Re-align the surfaces
as necessary
INCORRECT
Top surfaces are not
in the same plane.
Opposite beam
Top surfaces
are not in the
same plane.
Engine does
not rest firmly.
Rigid hardwood
(e.g. maple)
At least
15mm(19/32") for FS-40S
At least 12mm
(1/2") for FS-26S
Installation in the model
A typical method of beam
mounting is shown below,left. O.S. radial motor mount
(Available as an optional extra part.
See parts list)
Make sure that the mounting beams are parallel
and that their top surfaces are in the same plane.
3mm steel nuts
for FS-26S
3mm steel screw
for FS-26S
3.5mm steel screw
for FS-40S
3mm steel Allen screw
for FS-26S
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