O.S. Engine OSMG1847 46VX-DF ABC Compact Jet Ducted Fan  [OSMG1847]

O.S. Engine 46VX-DF ABC
Price:
NZD$589.85
Brand:
O.S. Engine
Model:
OSMG1847
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Overview and Capabilities of the 46VX-DF ABC

The O.S. Engine 46VX-DF ABC is engineered for the medium jet class in RC aviation. Compared with the 46VR-DF, this model delivers about 25% more power, giving model flyers a notable step up in sustained thrust and throttle authority.

Drum Valve Induction and Fuel Control

The 46VX-DF ABC uses a finely machined drum valve induction to improve fuel metering, resulting in cleaner throttle transitions and dependable power curves. Its precision carburettor is tuned to balance performance and economy for both forward and rear-mounted prop arrangements.

Heat Management and Structural Strength

Key components are designed to handle high RPM demands. A solid bar stock head aids heat dissipation while expanded fin area increases cooling efficiency. Heavier crankcase webbing reduces flex under load and the one-piece crankcase adds to long-term reliability.

Customisable Exhaust Fitment

The bolt-on exhaust adapter provides straightforward options for routing and muffling, allowing you to adapt the exhaust layout to the airframe and desired sound level.

Specifications

  • Displacement: 0.455 cu in (7.45 cc)
  • Bore: 0.866 in (22.0 mm)
  • Stroke: 0.772 in (19.6 mm)
  • Practical RPM: 2,500-28,000
  • Output: 2.5 hp @ 23,000 rpm
  • Weight: 16.6 oz (470 g)

This engine is targeted at skilled modellers who want a compact, higher-output powerplant for medium-sized jets, combining solid thermal control and flexible installation options.

It generally produces about 25% more power and includes updates to cooling and crankcase stiffness for better high RPM reliability.
Yes, the carburettor allows tuning to suit different operating conditions; expect to adjust needles for local fuel and weather variations.
Inspect head cooling fins, check fasteners for tightness, verify carburettor settings, and ensure no fuel leaks from fittings.

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