AMD5S - 5cc four stroke single cylinder engine

AMD5S – 5cc four stroke single cylinder engine


The AMD5S is a single cylinder four-stroke internal combustion engine.  The design has single- and double overhead camshaft variants and both air- and water-cooled versions.  It is designed to be machined from the solid, with no castings required.  The engine was conceived as a basis for a four-cylinder version, the AMD20IL4, with which it has many common parts and design features.


  • Single- and double overhead camshaft variants, with timing belt
  • Air- and water-cooled variants
  • Designed for petrol or glow-fuel
  • Bore – 19mm
  • Stroke – 18mm
  • Compression ratio – 10:1
  • Gear-type oil pump
  • Gear-type water pump (water cooled version only, obviously)
  • No castings required, machined from solid.


Not yet available.


Not yet available.

Purchase Drawings

I plan to make drawings and illustrated construction notes available for sale in due course.  Please contact me to register your interest.