O.S. Engines FL-70 - Manual (Page 7)

12
12X7, 12.5X6, 13X6
12.5X6, 13X6-7
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
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.
Trainer & Scale
Sport & Aerobatic
SILICONE FUEL LINE
Heatproof silicone tubing of
approx. 5mm o.d. and 2.5mm
i.d. is required for the
connection between the fuel
tank and engine.
props than those shown in the table may be
used, but remember that the propeller noise
will increase if blade tip is raised, due to higher
rpm or if a larger-diameter/lower-pitched prop
is used.
Since the FL-70 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
13
8mm
TOOLS
HEX WRENCH
SCREWDRIVER
Necessary for engine installation.
1.5mm, 2mm, 2.5mm, 3mm
Necessary for carburetor adjustments.
No.1, No.2, etc
Phillips Screwdriver
No.1, No.2, etc.
Socket Wrenches
5.5mm, 7mm, 8mm
LONG SOCKET WRENCH WITH PLUG GRIP
Recommended for easy removal and
replacement of the angled and recessed
glowplug, the O.S.Long Socket Wrench
incorporates a special grip.
End Wrenches
8mm, 13mm, 14mm, etc.
Needle Nose Pliers