OS Engines Max 120AX with Silencer

OS Engines

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The distinctive shape is hard to ignore, and with peak power of 3.1PS at 9000RPM, you can be sure that this engine loves big propellers! OS recognised that engines of this size are often used in scale models and have developed a silencer system that allows adaption to some of the 'tightest' installations. The carburettor features a neat needle valve that protects fingers while adjusting, yet is simple & accessible.

  • Delivers 20% more power than a .91, and with new CCD technology will bolt right where the .91 used to be.
  • At 650g, the 120AX is a very minimal weight increase over a .91.
  • The new angular head design not only looks great, it significantly increases surface area for better heat transfer.

Technical Specifications:

Displacement: 20cc

Bore: 30.4mm

Stroke: 27.5mm

Pratical RPM: 1,800-9,500

Output: 3.1hp @ 9,000 RPM

Weight: 650g

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