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GT60 w/o Muffler

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GT60 w/o Muffler

O.S. Engines OSMG1560 Airplane Engine Gas
Out of Stock ETA: 03/02/2021

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  • GT60 w/o Muffler

    This is the O.S. GT60 Gasoline Large Scale Airplane Engine without Muffler.


    Linerless cylinder with the cylinder head integrated with the
    cylinder, this arrangement allows for extremely precise intake/
    exhaust timing and very high scavenging efficiency resulting in
    higher output
    IG-02 electronic ignition system can be powered by 4-6 cell NiCd/
    NiMH batteries or 2-cell LiPo batteries
    Custom designed Walbro carburetor mounted to rear of engine with
    integrated choke rod guide
    Two year limited warranty through Hobby Services beginning at date
    of purchase


    O.S. GT60 Gasoline Engine, IG-02 Electronic Ignition, Instruction
    Manual, and CM6 Spark Plug


    Two-Cycle Oil: Break-In, Klotz Modelube recommended, mix at 30:1
    gas/oil mixture for 10 flights, 1.3 - 1.6 gallons (5-6 liters) of
    After Break-In: mix at 50:1 ratio, See COMMENTS below
    Propeller: 23x8 for break-in, 22x10-12, 23x8-10, 24x8-10 for
    Acro/Scale models
    Muffler: See COMMENTS below
    Electric starter NOTE, The propeller must be brought up to at least
    100RPM in order for the electronic ignition to work
    Fuel: Unleaded regular gasoline (no need to use high octane)


    Displacement: 3.656 (59.91cc)
    Bore: 1.732" (44.0mm)
    Stroke: 1.551" (39.4mm)
    RPM Range: 1,600-8,000 RPM
    Output: 6.00 hp @ 7,000 RPM
    Weight: Engine, 49.38 oz (1400 g)
    Ignition module, 3.7 oz (105 g)
    Suggested Propeller Size and RPM Data:
    22x8 7,650 RPM
    22x10 6,900 RPM
    23x8 7,000 RPM
    24x8 6,550 RPM
    24x10 6,150 RPM
    Carburetor Settings: Two turns out on high and low speed needles from
    fully closed position, then start engine and follow break-in
    instructions in manual

    Distance/Vertical Mounting Hole Centers: 2.6" (66mm)
    Distance/Horizontal Mounting Hole Centers: 3.1" (78mm)
    Height of Mounting Tabs: 3.4" (85.6mm)
    Height Lower Mounting Tab/Top of Cylinder Head: 6.9" (175mm)
    Height Lower Mounting Tab/Crankshaft Center: 1.7" (42.8mm)
    Height Crankshaft Center/Top of Cylinder Head: 5.2" (132.2mm)
    Cylinder Head Width: 6.6" (168mm)
    Width at Mounting Tabs: 3.8" (97.6mm)
    Center of Muffler Mounting Holes: 1.6" (40mm)
    Distance/Crankshaft Center to Muffler Hole Center: 2.7" (69.5mm)
    Length from Carburetor to Backplate: 1.5" (38.8mm)


    If using a different brand of oil other than Klotz, OS recommends
    their own mix ratio which may differ from the manufacturers'
    For 40:1, and 50:1 oils, OS recommends a 30:1 gas/oil mixture
    25:1 is 5oz of pre-mixed 2-cycle oil or 151 ml per gallon of fuel
    30:1 is 4.3oz of pre-mixed 2-cycle oil or 126 ml per gallon of fuel
    40:1 is 3.2oz of pre-mix 2-cycle oil or 95 ml per gallon of fuel
    50:1 is 2.6oz of pre-mix 2-cycle oil or 76 mll per gallon of fuel

    The following mufflers are ideal for different applications;
    J'TEC Large Wraparound Pitts Muffler for inverted
    mounting applications.
    Bisson Wraparound, and Inverted mufflers will also fit

  • O.S. Engines GT60 w/o Muffler Parts List (0 items)

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