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FS155-A P Ring 70R F6020

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FS155-A P Ring 70R F6020

O.S. Engines OSMG0998 Airplane Engine Nitro
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  • FS155-A P Ring 70R F6020

    This is the FS155-a P Four Cycle Engine with Pump System from O.S. Engines.


    Ideal for 120 size scale and sport models and aerobatic models
    requiring stable power and linear throttle response
    PD-08 pump and 70R carburetor integrated with regulator ensures
    stable fuel delivery regardless of model attitude and fuel level
    F-6020 three piece design muffler with center heatsink
    New internal lubricating system eliminates breather tubing from the
    Two year limited warranty through Hobby Services beginning at date of


    FS155-a P Four Cycle Engine with PD-08 Pump System, 70R Carburetor
    F-6020 Muffler, Header Pipe, type F Glow Plug, Needle Valve
    Extension Cable, Instruction Manual


    Fuel: Glow fuel with 5-20% nitro content and no less than 18%
    lubricant content
    Propeller: 16x8-12 or 17x8-12
    Glow Starter
    Field equipment


    Displacement: 1.548 cu in (25.36cc)
    Bore: 1.323" (33.6mm)
    Stroke: 1.126" (28.6mm)
    Practical RPM: 2,000 - 10,000 RPM
    Power Output: 2.6 PS, 2.56 HP @ 10,000 RPM
    Engine Weight: 28.40 oz (805g)
    Muffler Weight: 3.35oz (95g)
    Carburetor Settings-
    Needle Valve: 2-1/2 - 3 turns from fully closed
    Mixture Control Valve: Factory set, make only small adjustments if
    needed, after adjusting needle valve as described in manual, turn
    30° to lean idle mixture or 90° counterclockwise to richen mixture
    then back again 45° clockwise

    Width at Mounting Tabs: 2.6" 67mm)
    Crankcase Width below Mounting Tabs: 1.8" (47mm)
    Length from Drive Washer to rear of Carburetor: 5" (127.5mm)
    Height from Mounting Tab to Pushrod Cover: 4.5" (114mm)
    Height from bottom of Crankcase to Pushrod Cover: 5.4" (138.6mm)
    Distance between Mounting Hole Centers Same Side: 0.98" (25mm)
    Distance between Mounting Hole Centers Opposite Side: 2.3" (58mm)
    Distance/front Mounting Hole Center to Drive Washer: 2.5" (64.5mm)
    Distance/ Center of Engine to Drive Washer: 3.03" (77mm)
    Crankshaft Size: 5/16-24

  • O.S. Engines FS155-A P Ring 70R F6020 Parts List (1 items)

  • O.S. Engines FS155-A P Ring 70R F6020 Hop-Ups & Optional Accessories (0 items)

  • Manuals and Support

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