GT55 Gas Engine 54.9cc/3.352ci

This is the O.S. GT55 Gasoline Engine with Electronic Ignition.

FEATURES: 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)
Front mounted WLA-2 carburetor stays cooler for less heat
percolation and more consistent performance, simple and direct
throttle and choke linkages
Unique one-piece crankcase eliminates gaskets and enhances strength
and precision
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
Massive front and rear crankshaft bearings for longer life and
maximum power output
Thin high-performance piston ring and high-strength aluminum alloy
piston for reduced break-in and high compression from the very
first run
Two year limited warranty through manufacturer beginning at date of
purchase

INCLUDES: 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, Exhaust Gasket and Instruction Manual

REQUIRES: Propeller: 22x8 for break-in
22x10, 23x8, 23x10, 24x8, 24x10 for sport/acro/scale use
Two-Cycle Oil: Klotz Modelube recommended, mix at 50:1 ratio
Fuel: Unleaded regular gasoline (no need to use high octane)

SPECS: Displacement: 54.9cc (3.35 ci)
Bore: 1.62" (41.2mm)
Stroke: 1.62" (41.2mm)
Practical RPM: 1,800 - 8,000
Weight: Engine 1,580g (3.48lbs)
Igniter 140g (4.9oz)
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

Distance/center of Mounting Standoff Holes Top to Bottom: 2.6" (66mm)
Distance/center of Mounting Standoff Holes Side to Side: 3.1" (78mm)
Distance/center/Mounting Standoff Holes/Crankshaft Center:1.3" (33mm)
Height/bottom of Mount to Top of Cylinder Head: 7.1" (180.4mm)
Height/center of Crankshaft to Top of Cylinder Head: 5.5" (139.2mm)
Width at Cylinder Head: 2.9" (75mm)
Center of Crankshaft to Center of Exhaust Outlet: 2.9" (74.6mm)
Length from Mount to End of Drive Spacer: 5.9" (150mm)
Length from Mount to Crankcase Center: 1.5" (37.5mm)


BOX DIMENSIONS: 10.00" W. X 7.00" H. X 11.75" L.
BOX WEIGHT: 5.51 LBS.