OS Engines FS-64V Four Stroke Aircraft Engine, .64 Size, with F4051 Silencer, OS

The OS Engine OS FS-64V 4-stroke engine sets a new standard for basic 4-cycle engines. It is designed for sport or scale models and comes with an F-4051 exhaust and an F-type spark plug.

Features

• Newly designed cylinder head is adopted along with the increased displacement
• Internal capacity of the combustion chamber has been expanded to achieve a more 4-stroke exhaust sound and power feel
• Comes with an F-4051 silencer
• Drive washer has been changed to a machined aluminium keyway type
• Additional standard equipment is a set of lock nuts that prevent the propeller from coming off

Product Information

By increasing the stroke, not only propellers of 12x7-8 and 13x6 sizes, but also propellers with large loads (13x7-8, 14x6) can fly lightly without losing power.

A newly designed cylinder head was adopted along with the increased displacement. The internal capacity of the combustion chamber has been expanded to achieve a more 4-stroke exhaust sound and power feel. 

The F-4051 silencer, which is a unique design of the V series, has revised the internal dimensions and improved the exhaust efficiency while maintaining the comfortable 4-cycle sound. 

The drive washer has been changed to a machined aluminium keyway type. A lock nut that prevents the propeller from popping out, which has a proven track record as a safety measure, is standard equipment.

Specs

Displacement 10.46cc

Bore 25mm

Stroke 21.3mm

Output 1.14ps/11,000r.p.m.

Practical RPM range 2,400?11,000r.p.m.

Propeller size for sport/Stunt 12×6-8 or 13×6-7

for Scale 14×6

Weight 442g (engine), 44g (silencer)