O.S. Engines 32SX-MX - Manual (Page 11)

PROPELLER
Use well balanced propellers only. As the ideal
diameter, pitch and shape vary according to the size,
weight and type of model, final selection can be made
after practical experiment. As a starting point,
suggested propeller diameter is 42-45mm with a
pitch/dia ratio of 1.0-1.1 for Vee type hulls.
Never touch, or allow any object to come
into contact with, the rotating propeller and
do not crouch over the engine when it is
running.
REMINDER!
GLOWPLUG BATTERY
The power source for heating the glowplug may be
either a large, heavy-duty 1.5-volt cell, or a 2-volt
rechargeable lead-acid cell with extended leads (or a
resistance) to reduce the applied voltage to
approximately 1.5-v.
BATTERY LEADS
LONG SOCKET WRENCH
These are used to conduct current from the battery to
the glowplug. For convenience, special leads with a
suitable clip to fit the glowplug terminal, are
commercially available.
Recommended for easy removal and replacement of
the deeply recessed glowplug, the O.S. Long Socket
Wrench incorporates a special grip.(See Parts List)
FUEL BOTTLE OR PUMP
For filling the fuel tank, a simple, polyethylene
"squeeze" bottle, with a suitable spout, is required.
Alternatively, one of the purpose-made manual or
electric fuel pomps may be used to transfer fuel
directly from your fuel container to the fuel tank.
FUEL CAN FILTER
SILICONE FUEL LINE
Fit a filter to the outlet tube of your refueling container
to prevent entry of foreign matter into the fuel tank.
O.S. 'Super-Filters' (large and small) are available as
optional extras.
This is required for the connection between the fuel
tank and engine, also for the water-cooling system.
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