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  Electric Motors, Engines & Accessories > Engines R/C Gasoline > Engines R/C Gasoline - 2.01-3.00 Bookmark this Page

O.S. - OSMG1533 OSM38300 38300 531028021648 4531028021648
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O.S. GT33 Gasoline Engine
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O.S. GT33 Gasoline Engine
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On-line Videos: Video 1 (24 MB) Video 2 (YOUTUBE)
Instruction Manuals: Manual 1 (4.7 MB)
Tower Catalog Page: 199

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Tech Notes
  This is the GT33 Gasoline Aircraft Engine with Muffler and Rear Carburetor
                              from O.S. Engines.

FEATURES: Electronic ignition accepts LiFe, LiPo, NiCd and NiMH power and also offers low voltage warning Rear mounted Walbro carburetor-NOTE the choke valve rod shown on page 12 of the manual is not included Pitts style E-5030 aluminum muffler black in color, 5dB lower in noise than the competition Two year limited warranty through Hobby Services beginning at date of purchase

INCLUDES: GT33 Gasoline Aircraft Engine with Muffler, Carburetor, CM-6 Spark Plug and Instruction Manual

REQUIRES: 2-cycle oil, see SPECS Ignition Battery: 4.8-6.0V NiCd or NiMH, 6.6V LiFe or 7.4V LiPo pack LiPo battery requires voltage regulator Propeller: 18x10-12, 19x10, 20x8-10, use 18x8 prop for break-in Mounting standoffs, length depends on aircraft Gasoline safe fuel tubing and fuel filter

SPECS: Displacement: 2.013 cu in (32.98cc) Bore: 1.417" (36mm) Stroke: 1.276 (32.4mm) Crankshaft thread size: 5/16-24 Total Weight: 2.7lbs (1230g) Engine, 34.72oz (984g) Muffler, 5.65oz (160.5g) Ignition: 3.70oz (105.0g) RPM Range: 1,800 - 8,000 Output: 3.9 PS, 3.85 HP/9,000rpm Gasoline/Oil Mixture: 30:1 - 50:1 25:1 fuel/oil mixture if brand of oil states 50:1 mix Replacement Spark Plug: NGK CM-6 or Denso U20M-U Height, Crankshaft Center to Exhaust Outlet: 6.1" (156.1mm) Height, Crankshaft Center to Muffler Body: 4.1" (105.4mm) Height, Crankshaft Center to Muffler Mounting Holes: 2.1" (54.4mm) Height, Crankshaft Center to top of Cylinder Head: 4.3" (109.2mm) Length, end of Crankshaft to Carb: 7.7" (196.6mm) Length, end of Crankshaft to Backplate: 6.2" (158.9mm) Length, end of Crankshaft to Center of Engine: 4.9" (125mm) Length, Prop Washer to Center of Engine: 3.3" (84.5mm) Length, Prop Washer to Carburetor: 6.1" (156.2mm) Length, Prop Washer to Backplate: 4.7" (118.5mm) Width, Muffler Body: 4.5" (114mm) Width, Crankshaft Center to Exhaust Outlet: 1.2" (31.5mm) Cylinder Head Diameter, front to back: 2.5" (62.8mm) Cylinder Head Diameter, side to side: 2.6" (66mm) Mounting Hole Centers top to bottom: 2.1" (54mm) Mounting Hole Centers side to side: 3" (76mm)

jxs 04/28/11 ir/jxs updt jxs 11/11/11

– If you need more information, use these O.S. resources –
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Phone: 217-398-8970
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Accessories Needed

Accessories for the O.S. GT33 Gasoline Engine

Primary Accessories     Optional Accessories
  Special Stock Number Product Description Parts Saver Eligible Tower's
Low Price
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 LXRZ80 Great Planes Gasoline Fuel Tubing 3'
Qty Discount Available
4.49   In Stock
 LXS626 Klotz Gas RC Modelube 16 oz
Qty Discount Available
8.19   In Stock
Subtotal for this Group of Accessories: 12.68  
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Primary Accessories     Optional Accessories

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