!["Increased]("https://www.horizonhobby.com/on/demandware.static/-/Sites-horizon-master/default/PDPImages/OSMG901_PP_01.jpg")
Increased Stoke
By increasing the stroke, not only propellers of 12×7-8 and 13×6 sizes, but also propellers with large loads (13×7-8, 14×6) can be used without any loss of power.
!["Cylinder]("https://www.horizonhobby.com/on/demandware.static/-/Sites-horizon-master/default/PDPImages/OSMG901_PP_02.jpg")
Cylinder Design
A newly designed cylinder head is adopted along with the increased displacement. The internal capacity of the combustion chamber has been expanded to achieve more realistic 4-stroke exhaust sound and more power.
!["F-4051]("https://www.horizonhobby.com/on/demandware.static/-/Sites-horizon-master/default/PDPImages/OSMG901_PP_03.jpg")
F-4051 Silencer
The F-4051 silencer, which is a unique design of the FS-V series, has revised the internal dimensions and improved the exhaust efficiency while maintaining the comfortable 4-stroke sound.
!["Drive]("https://www.horizonhobby.com/on/demandware.static/-/Sites-horizon-master/default/PDPImages/OSMG901_PP_04.jpg")
Drive Washer
The drive washer has been changed to a machined aluminum with a woodruff key. Additional standard equipment is set if lock nuts that prevents the propeller from coming off.
