OS Motors GT22 w/Muffler Rear Carb

Model: OS Motors OSMG1522
Dist. #: OSMG1522 SKU: OSMG1522

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Updated on Jul 3, 2025 04:51:54 PM

GT22 w/Muffler Rear Carb...

This is the OS Engines GT22 Fuel Powered Engine with Muffler
and Back Installed Carburetor.

FEATURES:
Beam mounting design permits engine to fit inside cowls that are
sized for 2-stroke .60-.91 and 4-stroke 1.20 glow engines
Customized designed rear mounted Walbro carburetor with choke rod guide
incorporated into crankcase that minimizes set-up time
IG-02 electronic ignition deals with 4-6 cell NiCd, NiMH or 2-cell LiPo
and LiFe batteries
Pitts design muffler has enhanced mounting bolt holes and webbing at
high stress points
Two year limited warranty through Pastime Solutions starting at date of
purchase

INCLUDES:
GT22 Engine with Muffler, Electronic Ignition Module, CM-6 Spark Plug
Muffler Gasket, Muffler Bolts and Instruction Manual

NEEDS:
2-cycle oil with a mix ratio of 50:1 if using Klotz design oil
(if using other brand, follow manufacturer's mix ratio or if no
recommendation, mix at 30:1)
Ignition Battery: 4-6 cell NiCd, NiMH, or 2-cell LiPo
LiPo battery requires voltage regulator
Propeller: 16x8, 16x10, 17x6, 17x8, 15x10 for break-in
Fuel safe fuel tubing and fuel filter

SPECS:
Displacement: 1.35 cu in (22 cc)
Bore: 1.26" (32mm)
Stroke: 1.08" (27.5mm)
Practical RPM Variety: 1,800 - 9,000
Output: 2.66 hp @ 9,000 RPM
Weight:
Engine: 26.86oz (761.6g)
Muffler: 4.68oz (132.6g)
Ignition Module: 3.7oz (105g)
Preliminary Needle Positions: High Speed Needle-two turns open
Low Speed Needle-one and a half turns open
Distance In Between Mounting Hole Centers Very Same Side: 0.98" (25mm)
Distance In Between Mounting Hole Centers Opposite Side: 2.2" (57mm)
Mounting Hole Diameter: 0.197" (5mm)
Length of Muffler Can: 3.9" (100mm)
Width at Mounting Tabs: 2.7" (70mm)
Width of Crankcase Below Mounting Tabs: 1.9" (49.4mm)
Height from Crankshaft Center/top of Cylinder Head: 3.7" (94mm)
Height from Crankshaft Center/Muffler Mounting Hole Centers: (48.4mm)
Length from Drive Center to Carburetor: 5.5" (139.5mm)
Length from Drive Center to Center of Crankcase: 2.7" (68.5mm)
Length from Center of Crankcase to Carburetor: 2.8" (71mm)
Crankshaft Size: 5/16-24 UNF-2A