OS GT 33 with E-5030 silencer specially developed for model making. The engine has multiple ball bearings. The electronic ignition with integrated ignition timing adjuster makes starting very easy and does not require much effort. Depending on the model size, the engine can be used for aerobatic or tug models.

The scope of delivery includes instructions, ignition, propeller mounting material, spark plug and silencer.

Technical data

• Cooling: air
• Width [mm]: 80 mm
• Shaft thread: 5/16"-24 UNF-2A
• Spacer holes lengthwise [mm]: high 54 mm
• Carburettor: WT1024
• Total weight [g]: engine 980g + silencer 140g
• Height approx. [mm]: 161mm incl. ignition plug
• Mounting hole Ø [mm]: 5,7mm
• Speed range approx.: 1800-8000 rpm
• Bore [mm]: 36mm
• Spacer hole crosswise [mm]: 70mm
• Displacement [ccm]: 33cm³
• Power kW (hp) at: 2.9(3.9) at 9,000 rpm
• Recommended propeller size: 18x8 - 20x10".
• Length to hub: 155 mm
• Stroke [mm]: 32,4 mm
• Brand name: O.S.
• Range of application: Model aircraft
• incl. silencer: Yes
• Fuel: Petrol
• Type: 2-stroke petrol
• Article number Manufacturer: OS38300
• The O.S. GT33 engine is operated with "normal" petrol mixture 1:25.

"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.