GT33 Gasoline Engine

Second in the line of O.S. gasoline engines — but second to none in quality and performance!

When it comes to gasoline aircraft engines, the GT33 is in a class of its own. It has the muscle to swing larger props, and it stands out for many other reasons, too. The GT33 runs more quietly than comparable engines while exceeding their output, and it starts easily with electronic ignition that accepts many battery types. Once again O.S. has produced a gasoline powerhouse for the serious pilot!


Crankshaft ignition module Piston
With other engines you have to purchase a Pitts-style muffler separately — but the GT33 comes with an E-5030 muffler that resists distortion, resulting in 5dB less noise than similar engines. The space-saving design reduces the need to cut the cowl in order to fit in scale applications.
ignition module
Enjoy quick, confident starts with the included ignition module — which accepts batteries of all types, including LiFe and LiPo chemistries.
Piston
Mounting the Walbro carb at the rear allows for easy installation and easy needle access. The backplate mount is designed to reduce vibration, and the carb features a factory-supplied choke linkage, which needs to be set up by the modeler.
 crankshaft/bearings, liner, piston/pin and rod
Crankshaft/bearings, piston liner and piston/pin and rod for the GT33.
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  • Specifications
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Stock Number: OSMG1533
Displacement: 2.013 cu in (32.98 cc)
Bore: 1.417 in (36.0 mm)
Stroke: 1.276 in (32.4 mm)
Practical rpm: 1,800-8,000
Output: 3.85 hp @ 9,000 rpm
Engine: 34.72 oz (984 g)
Silencer: 5.65 (160 g)
Igniter: 3.70 oz (105 g)
Includes: engine, E-5030 muffler, ignition module, CM-6 spark plug, exhaust gasket
Requires: gasoline, 2-cycle oil
Suggested Props: 18x10-12, 19x10, 20x8-10, 18x8
Suggested Break-In Prop: 18x8
Ignition Battery: 4.8-6.0V NiCd or NiMH, 6.6V LiFe or 7.4V LiPo pack
Gasoline/Oil Mix: 30:1-50:1

Primary Accessories

Stock Number Mfr Number Product Description Quantity Needed
 GPMQ4135   GPMQ4135  Great Planes Gasoline Fuel Tubing 3' 1
 KSFP0310   KL-310  Klotz Gasoline RC Modelube 16 oz 1
 TOPQ5220   TOPQ5220  Top Flite 18x8 Power Point Propeller 1

Field Equipment

Stock Number Mfr Number Product Description Quantity Needed
        

Optional Accessories

Stock Number Mfr Number Product Description Quantity Needed
 HCAM6402   HCAM6402  Hobbico LifeSource LiFe 6.6V 200mAh 1C Receiver U 1
 HCAM6410   HCAM6410  Hobbico LiFeSource LiFe 6.6V 1300mAh 1C Receiver U 1
 HCAM6415   HCAM6415  Hobbico LiFeSource LiFe 6.6V 1100mAh 10C Receiver U 1
 HCAM6425   HCAM6425  Hobbico LiFeSource LiFe 6.6V 1800mAh 10C Receiver U 1
 HCAM6435   HCAM6435  Hobbico LiFeSource LiFe 6.6V 2100mAh 10C Receiver U 1
 HCAM6445   HCAM6445  Hobbico LiFeSource LiFe 6.6V 3200mAh 10C Receiver U 1
 HCAM6520   HCAM6520  Hobbico LiFeSource LiFe 6.6V 1900mAh 3C Tx/Rx U 4PK 1
 HCAM6525   HCAM6525  Hobbico LiFeSource LiFe 9.9V 1500mAh 1C Transmitter U 1
 HCAP3335   HCAP3335  Hobbico Safety Stick Engine Starter 1
 SULP1703   S603  Sullivan Dynatron Super Power Starter 1
 TOPQ5222   TOPQ5222  Top Flite 18x10 Power Point Propeller 1
 TOPQ5224   TOPQ5224  Top Flite 18x12 Power Point Propeller 1
 TOPQ5235   TOPQ5235  Top Flite 20x8 Power Point Propeller 1
 TOPQ5240   TOPQ5240  Top Flite 20x10 Power Point Propeller 1
 XOAQ1910   PJA19X10  Xoar Props 19x10 PJA Series Beechwood Propeller 1