O.S. FR5-300 Sirius

Brand: OS Engines

Part Number: L-OS37000

£2,227.19 Web Price RRP £2,559.99

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This incredible 50cc, five cylinder radial engine closely follows full-size practice in its design and construction, including the use of a geared double-track cam ring to operate its valve gear.

The Sirius features pushrod driven overhead valves, four ball bearings & two needle bearings, ringed pistons, a special inlet manifold assembly to balance the mixture distribution to the inlet pipes from the carburettor and a special propeller locknut assembly as standard.

Supplied complete with a radial mount, the FR5-300 Sirius is ideal for large scale models and is designed to be used with 18\" x 12~14\" to 22\" x 8\" propellers.

See the engine accessories at the end of this section for the optional front or rear exhaust collector rings specifically designed for this engine.

Propeller Range: 18x12 18x14 20x8 20x10 22x8
Weight: 2670g
Displacement: 9.95cc x5
Bore: 24.0mm
Stroke: 22.0mm
Power Output: TBA
Practical RPM: 1800-8500
  • Brand: OS Engines
  • Part No: L-OS37000
  • Format: Multi Cylinder

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