Company Introduction

With more than 30 years of experience in developing, manufacturing and testing 2-stroke engines, 3W has designed and patented the newest generation of gas engines for the Unmanned Aerial Vehicle (UAV) industry.

3W-International GmbH signed exclusive contracts for the following:

  • Production, research and development of heavy fuel and gasoline engines
  • Purchase of 3W patents in Germany and USA. Registration numbers of both patent offices have been received in August 2008
  • Worldwide sales & marketing for the complete line of heavy fuel and gasoline engines
  • Offering engine designs and adaptations for existing standard engines, upon customer request

3W-Modellmotoren GmbH has patents of their heavy fuel system in Germany and the USA.


  • 1985 Market launch of the first 2-stroke 3W-60 gasoline engines specially designed for airplane models.
  • 1986 Development and production of the 3W-40 and 3W-80B2 opposed-twin engines.
  • 1989 Development and production of the 3W-70B2 as well as the first 4-cylinder 3W-240B4 and 3W-160B4.
  • 1991 Development and production the 2-cylinder 3W-120R2 in-line engine as well as the 3-cylinder 3W-120R3 in-line engine.
  • 1995 Grant of a patent for the first 3-cylinder radial engine, with integrated planetary reduction gear.
  • 1997 A generation of engines with new pistons and cylinder technology begins with the i-series.
  • 2000 3W develops a 4-cylinder flat engine with 546 ccm/33.32 cu in on behalf of a customer.
  • 2002 Patent application for a new muffler system in Europe and the US. Development and production of the 4-cylinder 3W-212iB4 flat engine.
  • 2003 Completion construction design for the 5-cylinder radial engine 3W-256STR.
  • 2004 Meanwhile 3W produces engines between 24 and 684 cubic centimetres.
    The range of engines encompasses twenty-two different displacements in forty-seven different designs.
  • 2007 Development and production of the new 3W-210 Xib2.
  • 2008 Development and production of the 3W-110iR2 in-line engine.
  • 2009 Development of the kerosene/heavy-fuel engines (HFE)* with carburettor.
  • Since 2010 Intensive further development of HFE engines.
  • 2013 Development and production of engines with reed-assembly control.

Précis: 3W is the only engine manufacturer having produced 1- and 4-cylinder 2-stroke flat engines for over 30 years.

Your added value

  • High quality R&D and production made in Germany
  • Reduced fuel consumption
  • Reduced noise level
  • Reliable, dependable and cost effective engines
  • Inhouse engine-tests before delivery
  • Highly qualified workforce
  • Exceptional customer support
  • Requests for non-standards welcome

* For more information about our engines, please click here.

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