Os-engines 55AX User Manual download pdf (Page 6)

10

BASIC ENGINE PARTS

Cylinder head

Carburetor Type 40J

Crankshaft

Propeller nut

Propeller washer

Drive Hub

Crankcase

Cover Plate

Glowplug

Beam Mount

11

Tools, accessories, etc. The following items

are necessary for operating the engine.

BEFORE STARTING

The choice of propeller depends on the design

and weight of the aircraft and the type of flying

in which you will be engaged.

Determine the best size and type after

practical experimentation. As a starting point,

refer to the props listed in the accompanying

table. Slightly larger, or even slightly smaller,

Propellers

12x7-8, 13x6-7

Sport

props than those shown in the table may be

used, but remember that speed the propeller

noise will increase if blade tip is raised, due to

higher rpm or if a larger-diameter/lower-pitched

prop is used.

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!

Warning:

Make sure that the propeller is well

balanced. An unbalanced propeller and/or

spinner can cause serious vibration which

may weaken parts of the airframe or affect

the safety of the radio-controlled system.

DO NOT forget the WARNINGS and NOTES

on propeller and spinner safety given on

front pages.

Since the 55AX is intended to be

started with an electric starter, the

addition of a spinner assembly for

centering the starter sleeve is desirable. Use a

heavy-duty, well balanced spinner either of

metal or plastic.

Spinner

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