• What stands for : i of engine identification?
• What stands for: i B2 in the engine identification ?
• What stands for : iB4 in the engine identification ?
• What stands for : i R2 in the engine identification ?
• What stands for : Xi in the engine identification ?
• What stands for : CS ?
• What stands for TS?
• How long is the Warranty Period ?
• Is it necessary to install a fuel filter between tank and carburettor?
• I would like to send my ignition / engine for repair. What to do?
• What is the percentage of oil mix to be used with the engines?
• How to start correctly the engine ?
• Does a voltage regulator has to be used for the ignition?
• What capacity of battery has to be used for the ignition?

It means a new type of cylinder with modified transfer ports and modified timing.

iB2 means: new cylinder technology, Boxer engine , 2 Cylinders

iB4 means : new cylinder technology, Boxer engine, 4-Cylinder.

iR2 means : new cylinder technology, Inline engine, 2- Cylinder

Xi means a further development of the i –cylinder version. This type of cylinder is equipped with 6 transfer ports and in some versions with Bypasses into the exhaust port.

CS is the abbreviation for : Competition Serie which means a tuned engine. Parts are selected and fine tuned. Transfer ports, exhaust port and compression are modified giving more torque and more power out put. The higher torque is shifted in the lower RPM – range, so that the engine will develop good torque and power in this range. This is useful for 3D and torque roll maneuvers.

TS is the abbreviation for Twin Spark. This means the engine is equipped with a 2-cylinder ignition ( 1-cylinder engine ) or 2x 2-cylinder ignitions ( 2-cylinder engine). The 2 spark plugs per cylinder let the engine run soft in idle and increase the torque which means more power.

Warranty for engine and ignition : 3years , if 3W-original equipment is used.

We don’t recommend to install a fuel filter between carburettor and fuel tank. The carburettor itself is equipped with an inner  filter. In most cases a felt fuel filter in used in the tank station. This helps to clean the fuel.

Please get the service order printed out. Fill out the service order and send the engine and /or ignition to us including the service form to the following adress:

3W-Modellmotoren GmbH

Lise-Meitner-Str. 33

D - 63457 Hanau

Germany

Service oders / forms click here

For 3W-engines it is recommended to use 2% ( 1:50) fully synthetic 2-stroke oil.

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-           Close choke

-           Switch on ignition

-           Set throttle slightly over idle

-           Start engine until it starts and stopps.

-           Open choke

-           Start engine. When the engine/ carburettor is correctly tuned it will start after the 5^th flip.

-           Warm up the engine but never with full throttle!

-           Start flying.

3W-IIS ignitions does not need a voltage regulator. This unit is already part of the electronic and adjusted the voltage to the required value. Lipo Batteries with 2 cells can be used without problems.

Electric power consumption of 3W-Ignitions :

-           1-Cylinder Ignition : 0,8A at 6000 RPM

-           2-Cylinder Ignition : 0,9A at 6000 RPM

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