3W-684i B4


Article nr.: 10.003.100 (Zug/Tractor) | 10.003.101 (Druck/Pusher)
Price: 7.315,00 VAT included

Cylinder capacity 684.00 ccm
Power 59.00 HP / 44.13 KW
Bore diameter 66.00 mm
Stroke 50.00 mm
Rpm range 1.200 – 6.500 U/min-1
Weight incl. ignition 16.000 kg incl. ignition
Crankshaft 6 ball bearing
Oil/gasoline ratio 1:50 / 2% Mix
Ignition 6.0 – 8.4 V DC
3W-684i B4
SKU: 10.003.100 (Zug/Tractor) | 10.003.101 (Druck/Pusher) Categories: ,

High-performance 4-cylinder engine

A powerful, 6-bearing crankshaft and large ball and needle bearings guarantee a long service life. The engine was basically developed for industrial applications. Both the aircraft and the electronics are protected in the long term thanks to the minimization of vibrations.
The rear crankshaft drive enables the installation of additional devices such as a starter or genera-tor. Decompression valves installed as standard make starting the engine easier. A 1/2″ square in the propeller’s drive plate enables the engine to be started externally.
The microprocessor-controlled ignition enables simple engine control. The programmed ignition curve is exactly matched to the engines and guarantees good running characteristics in all rotation-al-speed ranges. The standard ignition can be operated with a voltage of 6 V up to 8.4 V (2-cell LiPo).


  • Engage the engine
  • Maintenance & Overhaul
  • Motor test
  • Engine cleaning
  • Installation of the engine in aircraft
  • Year inspection

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