With the FS-SURPASS series, OS has developed a new generation of four-stroke single-cylinder engines. Especially in terms of performance, they considerably surpass the previous OS four-stroke engines of the same displacement size.
19.96 cm³ displacement. Quadruple ball bearings with fuel pump.

Technical data

• Longitudinal clearance holes [mm]: 25mm
• Spacer holes crosswise [mm]: 58mm
• Article number Manufacturer: OS35540
• Type: 4-stroke Nitro
• mounting hole Ø [mm]: 5mm
• Bore [mm]: 30,4mm
• Width [mm]: 67mm
• Speed range approx.: 2.000-12.000 rpm
• Recommended propeller: 15x8 - 16x10
• Total weight [g]: 920g
• Height approx. [mm]: 138mm
• Stroke [mm]: 27,5mm
• Displacement [ccm]: 19,96ccm
• Length to hub: 135mm
• Power kW [hp] 1.539 (2.1) at 12,000 rpm
• Carburettor: 60C
• Shaft thread: 5/16"-24 UNF

"O. S. ENGINES", based in Osaka/Japan, is one of the world's most renowned model engine manufacturers and has been in existence since 1936 (!). Consistent further development and state-of-the-art production processes have enabled us to achieve a high level of technical development. This is the reason why "O. S."- Engines - advanced and competitively proven 2-/4-stroke engines
Engines for all areas of model making - so popular with renowned experts, too.
Double ball bearing motor with high performance and durability, suitable for all types of aircraft, especially aerobatics and scale models.