OS Engines FSa-56II Airplane Engine with F-4040 Silencer

OSM34330 OS Engines FSa-56II Airplane Engine with F-4040 Silencer

Note: Graves RC Coupons are not applicable with this product  

SKU: OSM34330
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Availability: In stock


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  • The popular FS56-a now features upgrades that make it even better than before!
  • Blow-by oil exits through the breather nipple on the back plate, for more stable operation.
  • Black rocker covers gives this engine a more impressive appearance.
  • The F-4040 silencer can be positioned to achieve the ideal fit.
  • Mounts with no-mod ease in the same space as the FS-56a.


Displacement 0.569 cu in (9.32 cc)
Power Type Glow
HP 1.0PS, 0.99 HP @ 10,000 RPM
Muffler Type 2-piece aluminum
Muffler Weight 1.48 oz (42 g)
Plug Type F
Product Height 3.3" (84mm) bottom of mounting tab to top of rocker cover
Product Length 5.2" (131.3mm) from carb to front of drive hub
Product Width 1.7" (44mm) between mounting hole centers
Prop Range 12x6-8 - 13x6-7
Recommended Fuel 10%-20% four cycle blend nitromethane w/18% synthetic lubricant
RPM Range 2,400 - 13,000
Stroke 0.81" (20.6mm)
Total Weight 16.3 oz (461 g)
Crankshaft Threads UNF1/4-28
Crankshaft Type Threaded
Cylinders Single
Bore 0.945" (24mm)
Carb Type O.S. 40NA rotary

Technical Specifications No
Oversized Item No
Manufacturer OS ENGINES
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