O.S. 38000 GT55 Gasoline Engine 54.9cc/3.352ci
This is the O.S. GT55 Gasoline Engine with Electronic Ignition.
Features
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O.S. 38000 GT55 Gasoline Engine 54.9cc/3.352ci
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IG-01 Capacitive Discharge
Ignition uses a microcomputer programmed for optimum spark advance through
the use of magnetic sensors on the crankcase and prop drive, the IG-01 also
detects and compensates for wet plugs to ensure consistent quick starts,
also requires minimum current in stand-by mode and features a low voltage
warning (intermittent engine operation)
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Front mounted carburetor stays
cooler for less heat percolation and more consistent performance, simple and
direct throttle and choke linkages
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Unique one-piece crankcase
eliminates gaskets and enhances strength and precision
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Front induction rotary valve
crankshaft design for positive opening and closing of valve for optimum
timing, no oil seal required which eliminates RPM loss due to additional
friction
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Massive front and rear
crankshaft bearings for longer life and maximum power output
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Thin high-performance piston
ring and high-strength aluminum alloy piston for reduced break-in and high
compression from the very first run
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Two year limited warranty
beginning at date of purchase
Specifications
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Displacement: 54.9cc (3.35 ci)
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Bore: 1.62" (41.2mm)
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Stroke: 1.62" (41.2mm)
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Practical RPM: 1,800 - 8,000
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Weight: Engine 1,580g
(3.48lbs)
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Igniter 140g (4.9oz)
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Carburetor Settings: Two turns
out on high and low speed needles from fully closed position, then start
engine and follow break-in instructions on pages 24-25 in manual
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Distance/center of Mounting
Standoff Holes Top to Bottom: 2.6" (66mm)
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Distance/center of Mounting
Standoff Holes Side to Side: 3.1" (78mm)
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Distance/center/Mounting
Standoff Holes/Crankshaft Center:1.3" (33mm)
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Height/bottom of Mount to Top
of Cylinder Head: 7.1" (180.4mm)
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Height/center of Crankshaft to
Top of Cylinder Head: 5.5" (139.2mm)
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Width at Cylinder Head: 2.9"
(75mm)
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Center of Crankshaft to Center
of Exhaust Outlet: 2.9" (74.6mm)
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Length from Mount to End of
Drive Spacer: 5.9" (150mm)
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Length from Mount to Crankcase
Center: 1.5" (37.5mm)
Package Contents
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O.S. GT55 Gasoline Engine with Electronic Ignition, Carburetor, CM-6
Spark Plug, four Mounting Standoffs, Prop Washer with four 5x40mm
Socket Head Cap Screws and Instruction Manual
Requirements
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Propeller: 22x8 for break-in
22x10, 23x8, 23x10, 24x8, 24x10 for sport/acro/scale use
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Two-Cycle Oil: Klotz Modelube
recommended, mix at 50:1 ratio
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Muffler: See COMMENTS below
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Fuel: Unleaded regular
gasoline (no need to use high octane)
Comments
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The J'TEC Large Wraparound
Pitts Muffler, JTCG7950 will fit this engine for inverted mounting
applications.
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The Slimline #2123 and #2123S
mufflers and the Bisson #9250 (wraparound) and #9251 (inverted) mufflers
will also fit but are not carried by us.
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