OS FS 91 Single Cylinder

OS FS 91 Single Cylinder Engine
We are pleased to offer a wide variety of conversion parts and accessories for the OS FS 91 Single Cylinder Engine.
O.S. developed the Surpass Series of 4-stroke engines for discerning fliers who demand more power. Able to swing larger props and supply more usable horsepower, Surpass 4-strokes provide the best performance for your plane, regardless of scale or flying style.
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Specifications:
Displacement: 14.95cc/.912cu.in.
Practical rpm: 2,000 - 12,000
Recommended Prop Sizes: 13x9,14x7,15x6,16x6
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About the Brand:
OS Engines offers a diverse range of products tailored to meet the needs of hobbyists and professionals. Each OS engine is built with advanced technology, ensuring optimal fuel efficiency, extended durability, and smooth operation in even the most demanding conditions.
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Engine Servicing
We can also offer our inhouse services in fitting these parts to your engine (Please visit our engine servicing page here for more info)
All Conversion Parts
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OS FS Single Cylinder 4 Stroke Engine Sensor Bracket and Magnet Ring Conversion Kit (Available in 3 sizes)
Regular price £54.95 GBPRegular priceUnit price / per
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1/4-32" Spark Plug
Regular price £17.82 GBPRegular priceUnit price / per -
RCEXL Opto Gas Engines Kill Switch (Use Futaba Plug)
Regular price £17.82 GBPRegular priceUnit price / per -
Power Switch With LED
Regular price £5.94 GBPRegular priceUnit price / per -
Iridium 1/4-32" Spark Plug
Regular price £26.14 GBPRegular priceUnit price / per -
Piston Stop 1/4-32"
Regular price £13.18 GBPRegular priceUnit price / per -
RCEXL Single Twin L-V 3W Radial Ignition Timing Device / Testing Kit
Regular price £9.50 GBPRegular priceUnit price / per -
Hex Glow Plug Thread Spark Plug by RCEXL
Regular price £16.98 GBPRegular priceUnit price / per -
RCEXL Single Cylinder Ignition 90 Degree 1/4-32" ME-8 5/16" (8mm Hex) Spark Plug Cap
Regular price £80.78 GBPRegular priceUnit price / per
Recommended Propellers for This Engine:
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Falcon Two Blade Sports Beechwood Propeller (Petrol) (9'-31')
Regular price From £5.59 GBPRegular priceUnit price / per -
Xoar Two Blade Scimitar Beechwood Painted Propeller (Petrol)
Regular price From £11.10 GBPRegular priceUnit price / per -
Falcon Two Blade Sports Carbon Fiber Propeller (Petrol) (16'-29')
Regular price From £63.99 GBPRegular priceUnit price / per -
Falcon Two Blade WWII Beechwood Propeller (Petrol)
Regular price From £27.46 GBPRegular priceUnit price / per -
Falcon Two Blade Classic Civilian Beechwood Propeller (Petrol)
Regular price From £27.46 GBPRegular priceUnit price / per

OS FS 91 Single Cylinder
Something Not Right?
If you have any questions on this engine or queries about engine conversions and upgrades in general, please contact us and we'll get in touch promptly!