O.S. Engine OSMG1447 46LA-S Control-Line Tuned Unit  [OSMG1447]

O.S. Engine 46LA-S
Price:
NZD$0.00
Brand:
O.S. Engine
Model:
OSMG1447
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Control-Line Reliability from the O.S. Engine OSMG1447 46LA-S

Pilots in the circle will notice the dependable behaviour of the O.S. Engine OSMG1447 46LA-S. It packs O.S. engineering into a compact package designed for repeatable runs and practical maintenance between sorties.

Venturi Setup for Consistent RPM

The venturi arrangement on the O.S. Engine 46LA-S smooths out throttle response so speed stays even during routines. The rear-mounted needle valve reduces the chance of damage on impact and keeps adjustments easy when you are tuning at the flying field.

Stiff Build and Improved Thermal Management

Built to withstand repeated use, the 46LA-S uses a nylon backplate mount and ratchet spring to lock settings against vibration. The reinforced one-piece crankcase and enlarged squared head fins help move heat away from the combustion area to maintain reliable running under load.

Specifications

  • Displacement: 0.467 cu in (7.64 cc)
  • Bore: 0.906 in (23.0 mm)
  • Stroke: 0.724 in (18.4 mm)
  • Practical RPM: 2,000-16,000
  • Output: 1.2 hp @ 15,000 rpm
  • Weight: 9.29 oz (263.5 g)
  • Recommended Props: 11x6, 11x7, 12x5, 12x6

The O.S. Engine 46LA-S is a sensible pick for flyers wanting steady throttle control and a tough build that copes with frequent use.

Is the 46LA-S easy to tune for control-line patterns?

Yes, the venturi design gives predictable behaviour. Start with a rich setting, then lean the mixture while noting response during loops and turns.

Which mounting tips help reduce vibration issues?

Use firm, even mounting with the correct backplate torque and check the ratchet spring regularly. Proper engine alignment and vibration damping at the mount points will keep settings stable.

What should I check before my first flight with this engine?

Confirm prop balance and fit, verify needle setting and throttle linkage, and run a short ground check to ensure smooth idle and transition to higher rpm.

Are there simple upgrades to improve longevity?

Routine after-run care, using quality fuel and keeping fins clear of debris are effective. Upgrading to a well matched prop and keeping the backplate secure will also reduce wear.

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