O.S. Engine OSMG0352 BGX-1 3500 RN High-Output 35cc Model Engine  [OSMG0352]

O.S. Engine BGX-1 3500 RN
Price:
£335.78
Brand:
O.S. Engine
Model:
OSMG0352
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High-performance 35 cc option from O.S. Engine OSMG0352 BGX-1 3500 RN

Large-scale RC pilots looking for robust propulsion will appreciate the O.S. Engine OSMG0352 BGX-1 3500 RN for its combination of displacement and refined running. The layout aims to keep vibrations low while maintaining useful power for serious flying.

Mechanical design for consistent power delivery

With ball-bearing support and careful component tolerances, this engine is built to provide reliable spool-up and longevity. The published output is 4.1 hp at 10,000 rpm, giving authority for verticals and sustained speed runs.

Stability through vibration control

Vibration mitigation is central to the design, helping preserve airframe alignment and instrument accuracy. The included radial mount matches the SuperTigre S-3000K mounting pattern to simplify fitting into many large-scale builds.

Prop selection for different flight roles

The BGX-1 3500 RN accepts a range of propellers from 18x8 up to 20x10, allowing pilots to set their aircraft up for sport flying, aerobatics or longer-duration flights by choosing the appropriate prop size.

Specifications

  • Displacement: 2.13 cu in (35 cc)
  • Bore: 1.47 in (37.3 mm)
  • Stroke: 1.26 in (32 mm)
  • Practical RPM: 1,500-10,000
  • Output: 4.1 hp @ 10,000 rpm
  • Weight: 47.3 oz (w/o mount or muffler) (1,340 g)
  • Includes: Muffler, radial mount, safety prop nut assembly
  • Requires: Glow plug, fuel, propeller
  • Recommended Props: 18x8, 18x9, 18x10, 18x11, 18x12, 20x8, 20x9, 20x10

The BGX-1 3500 RN is aimed at builders and pilots who need a tunable, low-vibration engine capable of delivering the thrust demanded by large-scale models.

After break-in, recheck mounting hardware, retorque muffler screws and inspect for fuel leaks; perform regular checks of the glow plug and bearings.
Yes, its output and low vibration suit aerobatic loads, but always confirm engine alignment and fuel delivery system capacity for aggressive routines.
Choose a prop with larger diameter and moderate pitch, such as a 20x9 or 20x10, to improve climb performance while monitoring RPM and CHT.
You can fit alternative mufflers that suit the engine's output, but ensure mounting and backpressure remain compatible and check for ground clearance changes.

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