O.S. Engine OSMG0830 FS-30S Surpass Lightweight Airplane Powerplant  [OSMG0830]

O.S. Engine FS-30S Surpass
Price:
NZD$358.37
Brand:
O.S. Engine
Model:
OSMG0830
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Power Upgrade for Small Airframes with the FS-30S Surpass

Model pilots who want more grunt without major airframe work will find the O.S. Engine FS-30S Surpass a tidy solution. It fits .26-size mountings and its 4-stroke design yields roughly 20% more power than the FS-26 while delivering reduced noise and better fuel use.

Performance Highlights of the FS-30S

Fitted to aircraft like the Great Planes Piper J-3 Cub .20 or a T-Craft, the FS-30S Surpass allows larger diameter and higher pitch props for stronger climb and a more convincing engine sound. The engine features a ringed piston and a rear updraft carburettor for solid compression and response, and the crank is supported by dual ball bearings with a helix gear-driven cam for reliable timing.

Specifications

  • Displacement: 0.299 cu in (5 cc)
  • Bore: 0.767 in (19.5 mm)
  • Stroke: 0.648 in (16.4 mm)
  • Practical RPM: 2,500-13,000
  • Output: 0.5 hp @ 10,000 rpm
  • Weight: 9.2 oz (261 g) w/o muffler; 9.8 oz (278 g) w/muffler
  • Includes: Muffler, glow plug
  • Recommended Props: 9x6, 9x7, 10x4, 10x6

The O.S. Engine FS-30S Surpass is well suited to flyers looking to upgrade smaller models for improved climb and cruise. Its compact package and increased output make it suitable for sport flying and modest aerobatics.

Can I use this engine in a veteran trainer airframe?

Yes, provided the trainer uses .26-size mounts. The physical footprint is similar to prior models, so swap-in is usually straightforward.

What changes in throttle feel should I expect?

You will notice stronger mid and top end due to the higher output and ability to handle larger props. Throttle response is generally smoother because of the improved internals.

Is this engine ideal for sport aerobatics?

Yes, for light to moderate aerobatic routines the extra power and torque are beneficial, though serious 3D requires larger displacement engines.

How should I approach break-in runs?

Use a rich setting and gentle runs for the first few tanks, checking for stable running and making small needle adjustments as needed before moving to normal lean settings.

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