This is the O.S. Engines FS-95V Four Stroke Aircraft Engine.
FEATURES: Broad power band for a wide variety of airplanes including models
designed for .60 2-stroke and .90 4-stroke engines
Redesigned cylinder head to match angled valve layout for steady
power at all times and a perfect balance between high combustion
and efficient cooling
Redesigned "Jet Stream" muffler with unique shape for more authentic
four stroke sound
Same mounting dimensions, drive hub position and linkage position as
the O.S. FS-91 Surpass II, 61FX, 65LA, 75AX, 95AX and FS-110
INCLUDES: O.S. Engines FS-95V Four Stroke Engine with Type F Glow Plug, Muffler
Header Pipe with two Locknuts and Instruction Manual
REQUIRES: Fuel: 5-20% nitromethane aircraft blend with 18% lubricant content
Propeller: Sport & Aerobatic 13x7-9, 14x6-8
Scale 15x6-8
SPECS: Carburetor Settings-
Needle Valve: 2-1/2 - 3 turns from fully closed
Mixture Control Valve: Rotate until slotted head is flush with carb
body. After setting needle valve, rotate mixture control valve
approximately 45° clockwise to lean the mixture or 45° counter-
clockwise to richen mixture
Displacement: 0.951cu in (15.59cc)
Bore: 1.142" (29.0mm)
Stroke: 0.929" (23.8mm)
Practical RPM: 2,100 - 11,000RPM
Power Output: 1.7ps/10,000RPM
Weight: 20.88oz (592g)
Muffler Weight: 2.05oz (58g)
Crankshaft Size: 5/16-24
Height from bottom of Mounting Tab to Pushrod Cover: 3.8" (97.5mm)
Height from bottom of Crankcase to Pushrod Cover: 4.7" (119mm)
Distance from Carburetor to Drive Hub: 4.5" (115.7mm)
Distance/Mounting Hole Centers Same Side: 0.98" (25mm)
Distance/Mounting Hole Centers Opposite Side: 2" (52mm)
Mounting Hole Diameter: 0.16" (4.2mm)
Distance from Drive Hub to end of Crankshaft: 1.5" (37.4mm)
Distance from Drive Hub to center of Engine: 2.6" (66.5mm)
Width at Mounting Tabs: 2.4" (61mm)
Width Below Mounting Tabs: 1.7" (42.6mm)
Height/Mounting Tab Bottom to center of Needle Valve: 0.70" (17.8mm)