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OS GT-60 Gasoline engine w/muffler

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O.S. Engines

 Product Description


For large-scale RC planes, the GT-60 from OS Engines is a superb choice; giving you the performance you need to succeed.

  • 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

An excellent gasoline engine for large RC planes, the GT-60 from OS Engines comes with a Pitts Style E-6020 muffler. You will also receive an IG-02 electronic ignition and a CM6 spark plug. Order yours now.


Please take note of the suggested propeller size and RPM data provided by OS Engines:

Propeller Size RPM
22 x 10 6,900
23 x 8 7,000
24 x 8 6,550
24 x 10 6,150


Please note that if you choose to use a different brand of oil other than Klotz, OS Engines recommends their own mix ratio, which may differ from the manufacturers'. This mix ratio is outlined below:

  • 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
What you Need
  • Propeller. Break-In 23x8, Acro/Scale 22x10-12, 23x8-10, 24x8-10
  • Unleaded regular gasoline (no need to use high octane)
  • 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 gas. After break-In, mix at 50:1 ratio
  • Electric starter. NOTE, the propeller must be brought up to at least 100RPM in order for the electronic ignition to work


  • 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, 49.38oz (1400g) Ignition module, 3.7oz (105g) Muffler6.28oz (178g)

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