−6−
INSTALLATION OF THE ENGINE
Rigid hardwood
(e.g. maple)
At least 15mm(1/2")
At least
15mm(1/2")
A typical method of beam
mounting is shown below, left.
Installation in the model
Front view
Side view
Top surfaces are not in the
same plane.
Opposite beam
Top surfaces are not in the
same plane.
Re-align the surfaces as necessary
Engine does not rest firmly.
CORRECT
INCORRECT
Top surfaces are in the same plane.
Use mounting screws of a diameter (between 5mm appropriate to engine size.
Hardwood mounting beams
Radial motor mount
(cast aluminum)
How to fasten the mounting screws.
Before connecting the throttle-lever / servo linkage, make
sure that no part of the linkage interferes with the internal
structure of the aircraft or wiring, etc., when the throttle is
fully open or fully closed.
Set the throttle lever linkage so that the throttle rotor is (a)
fully open when the transmitter throttle stick is fully
advanced and (b) fully closed when the throttle stick is fully
retarded. Adjustment of the throttle rotor opening at the
idling position can then be made with the throttle trim lever
on the transmitter. (Select throttle-lever and servo-horn
hole positions that will avoid excessive pushrod travel
causing the throttle to bind at either end.)
THROTTLE LINKAGE
When adjusting the throttle lever angle, relative to the
rotor,hold the rotor at about half-way between the open
and closed positions while loosening and tightening the
fixing screw, otherwise the rotor, rotor guide
screw,throttle stop screw or carburettor body may
become burred and damaged.
Note:
•
•
Tighten second nut firmly
down onto first nut.
Tighten this nut first.
Steel washer
5mm steel screw
Spring washer
or lock washer
Hardwood such as
cherry or maple.
Spring washer
5mm steel Allen
screw
5mm steel nut
Make sure that the mounting beams are parallel and that their
top surfaces are in the same plane.
NOTE: Be sure to secure large enough air intake and
outlet area for cooling the engine in order not to overheat
the engine.
−7−
INSTALLATION OF SILENCER(MUFFLER)
To fit the standard silencer
M5x15
M5x20
Fix the exhaust adaptor plate to the engine with the two M5
x15 Allen screws supplied.
1.
Now fit the silencer to the exhaust adaptor with M5x20
Allen screws, also provided.
2.
In order to prevent the leakage of exhaust oil from
between the engine and adaptor, and between the
adaptor and silencer, apply a suitable silicone sealant to
the joint faces during assembly.
NOTE:
The angled exhaust outlet is agjustable and can be rotated to
any desired position in the following manner.
Loosen locknut and assembly screw.
Set the exhaust outlet at the required angle by rotating the
rear part of the silencer.
Re-tighten the assembly screw, followed by the locknut.
1.
2.
3.
Lock nut
Exhaust Outlet
Turn to required position
Exhaust adaptor
Assembly screw
For installation in the model a 450-550cc tank is Suggested.
These will allow 10-12 minute flights.
Locate the fuel tank so that the top of the tank is 5-10mm
(1/4-3/8") above the level of the needle-valve.
Be sure to use a pressurized fuel system by connecting the
muffler pressure nipple to the vent-pipe of the fuel tank.
FUEL TANK LOCATION
Attention to tank height
•
FUel level
10mm
GLOWPLUGS
Since the compatibility of glowplug and fuel may have a
marked effect on performance and reliability, it would be
worthwhile to try different heat range glowplugs.
Recommended O.S. plugs are Nos. 8, A5 and A3.
Carefully install the plug finger-tight, before final tightening
with the correct size plug wrench.