O.S. Engine OSMG1250 FT-300 Twin Cylinder Glow Motor  [OSMG1250]

Realistic Running with the O.S. Engine FT-300

Scale enthusiasts chasing authentic engine note and predictable power will find the O.S. Engine FT-300 appealing. As O.S.'s top flat twin in this size class, it brings a compact, purpose-built solution for 1/4 scale aircraft where realism and control are priorities.

Design detail and performance figures

The FT-300 highlights careful machining and clear performance targets. Its 1.488 x 2 inch displacement with a 1.323 inch bore yields a peak output of 4.0 hp at 7,000 rpm, while the practical operating band from 1,800 to 9,000 rpm suits a variety of flying styles. The 64.5 oz mass is practical for many scale airframes without unduly shifting the centre of gravity.

Why a flat twin is preferred by many builders

An opposed twin layout reduces felt vibration and improves throttle response, which helps airframes remain rigid and control linkages stay precise. The package includes a glow plug, firewall mounting hardware and a propeller locknut assembly to simplify fitting and ensure stable prop retention.

For model pilots experienced with glow power who want a more refined engine note and reduced vibration, the O.S. Engine FT-300 is a solid choice for 1/4 scale builds.