O.S. Engines 65AX - Manual (Page 9)

16
How to fasten the mounting screws.
Hardwood mounting beams
Radial motor mount (cast aluminum)
Tighten second nut
firmlydown onto first nut.
Tighten this nut first.
Steel washer
3mm steel nuts
3mm steel screw
Spring washer or
lock washer
15mm min.
15mm min. Hardwood such as
cherry or maple.
Spring washer
3.5mm
steel Allen screw
Make sure that these mounting beams are accurately
aligned and firmly integrated with the airframe,
reinforcing the adjacent structure to absorb vibration.
Use 4mm or larger steel screws, preferably Allen
type hexagon socket head cap screws, with washers
and locknuts, for bolting the engine to the bearers.
O.S. Radial Motor Mount
A special O.S. radial motor mount (Code No.71905200)
is available, as an optional extra, for use where firewall
type mounting is required.
THROTTLE LINKAGE
Before connecting the throttle to its servo, make sure that
the throttle arm and linkage safely clear any adjacent part
of the airframe structure, etc., as the throttle is opened
and closed. Connect the linkage so that the throttle is
fully closed when the transmitter throttle stick and its trim
lever are at their lowest settings and fully open when the
throttle stick is in its fully-open position. Carefully align
the appropriate holes in the throttle arm and servo horn
so that they move symmetrically and smoothly through
their full travel.
17
INSTALLING THE GLOWPLUG
Install washer on glowplug
and insert carefully into
cylinder-head, making sure
that it is not cross-threaded
before tightening firmly.
Glow plug
Washer
NEEDLE-VALVE EXTENSION
The needle-valve supplied with this engine is
designed to incorporate an extension so that,
when the engine is enclosed within the
fuselage, the needle-valve may be adjusted
from the outside. For this purpose a Needle
Valve Extension Cable Set is supplied with the
engine. If a longer extension is reguired, cut a
commercially available rod to the required
length, bend one end to an L shape, insert it
into needle's center hole and secure it by
tightening the set-screw in the needle-valve
knob with 1.5mm Allen key.
Needle Valve Extension Cable Set
1.5mm Allen key.
Set Screw
INSTALLATION OF THE
STANDARD ACCESSORIES