Thank you for choosing our superb new THOR 45 CDI petrol engine. The THOR
45 CDI engine is a single cylinder, two-stroke petrol engine incorporating
an easy-to-adjust Walbro carburettor with integrated pump, fully-electronic
ignition system and a high-quality, dual-ring piston for exceptional power
and ease of use. The THOR 45 CDI engine also features heavy-duty aluminum
engine mounts, a high-volume silencer and a velocity stack. We are confident
that this precision product will provide you with many hours of reliable, high-
performance flying.
This engine is intended for model aircraft use only. Do not use it in any other
application.
This is an air-cooled engine, so you must provide adequate cooling for the
engine and the exhaust.
Use a good-quality propeller and spinner. Always make sure to balance both
the propeller and the spinner before mounting them onto the engine.
When drilling the propeller to fit the propeller bolt, make sure that the hole
is centered and take care not to weaken the propeller by drilling holes in the
strengthening webs when you drill the four radial bolt holes.
Make sure that the propeller bolts are tightened securely and check them
for proper tightness regularly.
The ignition module should be mounted to avoid vibration, heat and fuel
oil.
You must use a kill switch (not supplied) between the ignition battery and
the ignition module.
To avoid radio "noise" caused by metal-to-metal contact, connect the throttle
cable to the throttle arm using a heavy-duty nylon clevis.
To prevent unwanted RF interference, always keep any part of the radio con-
trol system (servos, receiver, flight battery, aerial, etc) 300mm (12") away from
the ignition module. Perform a range check with the engine running. We find
the use of PCM receivers to be more reliable and therefore recommended.
Always use a Chicken Stick or wear a heavy-duty leather glove to start the
engine.
Ensure that the spark plug is in good condition, is set to the correct gap (see
specifications above), and is tightened completely.
Ensure that the spark plug cap is firmly seated on the spark plug.
Do not wear loose clothing or allow anything to be drawn into the spinning
propeller while the engine is running.
If you need to carry your model while the engine is running, be conscious of
the spinning propeller. Keep the airplane pointed away from you and others
at all times.
Do not attempt to make carburettor adjustments while the engine is
running. Always shut down the engine first.
Keep all spectators at a safe distance while the engine is running.
Never stand directly in the arc of the spinning propeller.
Make sure your aircraft is firmly secured when you start the engine. It's
advised to have a helper hold the aircraft while you start and run up the
engine.
INTRODUCTION
BECOMING FAMILIAR WITH YOUR ENGINE
We strongly recommend reading through these operating instructions in
their entirety to familiarise yourself with the features and operation of your
new engine. Whether this is your first petrol engine or if you've run them in
the past, following these operating instructions closely will reward you with
a great running and trouble-free engine.
1
WARNINGS AND PRECAUTIONS, CONTINUED
Displacement .......................... 45cc (2.745in
3
)
Bore: ...................................... 43mm (1.693")
Stroke: ................................... 31mm (1.221")
Practical RPM: ........................ 1,600 - 7,800
Maximum Power Output: ........ 4.2hp
Weight w/Muffler: .................... 1650g (58.2oz)
Ignition Type: ...................... DC-CDI (Fully Electronic)
Ignition Power Source: ....... 6V DC (5 Cell NiCd/NiMh)
Spark Plug Gap: ................. 0.7mm (0.028")
Static Ignition Timing: ......... 12°-14° BTDC
Fuel Required: .................... 89-91 Unleaded w/2-St. Oil
Fuel/Oil Ratio: ..................... 25:1 to 40:1
Oil Type: .............................. 2 Stroke Synthetic
(Castrol TTS or similar)
This engine is not a toy. It is a precision-built machine whose power is capable
of causing serious injury to yourself and others if abused or misused, or
if you fail to observe proper safety precautions while using it.
Mount the engine securely in the aircraft or on a suitable engine test stand
to run the engine. Follow the mounting instructions in your kit's instruction
manual for individual mounting recommendations. Do not clamp the engine
in a vice to test-run it.
WARNINGS AND PRECAUTIONS
Due to running manufacturing
changes and improvements, your
engine may differ slightly from
that shown.
THOR 45 CDI PETROL ENGINE
OPERATING INSTRUCTIONS
THOR 45 CDI ENGINE SPECIFICATIONS
