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Model: OS Motors OSMG1513
Dist. #: OSMG1513   SKU: OSMG1513

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Expected Availability: Late May

List Price:  $599.99
Price:  $379.99 & FREE SHIPPING
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Updated on Mar 16, 2018 11:40:06 PM

GGT15 Gasoline w/E4040...
This is the Fuel Powered GGT15 Engine w/E4040 Muffler from O.S. Engines.

Perfect for bigger 2-stroke .61-.91 class models, and 4-stroke .91
    class models
Begins easily utilizing a radiance driver and radiance plug-eliminates ignition
    module and lowers weight
61H carburetor with PD-08 pump system
Shell type roller bearings
2 year restricted service warranty through Pastime Provider starting at date
    of purchase

GGT15 Engine w/E4040 Muffler, #G5 Radiance Plug and Directions

Fuel: Fuel and 2-cycle oil in a 50:1 mix
Prop depending on aircraft: Sport,13x8-11
Acro, 14x8-10
Scale, 15x6-8
Radiance starter & field devices

Displacement: 0.912 cu in (14.95cc)
Bore: 1.091" (27.7mm)
Stroke: 0.976" (24.8mm)
Practical RPM Variety: 2,000-11,000
Output: 2.35 ps/2.32 hp @ 15,000 RPM
Weight: Engine, 21.5oz (610g)
Muffler, 6.28oz (178g)
Range between Mounting Hole Centers Exact Same Side: 0.98" (25mm)
Range between Mounting Hole Centers Opposite Side: 2.04" (52mm)
Width at Installing Tabs: (61mm)
Width of Crankcase listed below Installing Tabs: 1.7" (44mm)
Width from Crankcase Center to Exhaust Outlet: 4.4" (112.3mm)
Height/bottom of Installing Tabs to Muffler Bottom: 1.5" (37.6mm)
Length/Crankcase Center to Own Washer: 2.6" (66.8mm)
Length/Crankcase Center to end of Crankshaft: 4.03" (102.6mm)
Length from Pump to end of Crankshaft: 5.6" (142mm)
Crankshaft Size: UNF 5/16-24
Rearward Needle Valve Angle Relative to Engine: 30°
    Needle Valve Adjustment;
Slowly open throttle completely when engine is started.
Close needle valve 30-45° increasing RPM
When RPM begins reducing, close needle valve 60-90°, then open
    slowly 15° per second as RPM increases
Open needle valve 90° further from point where max RPM is gotten
Fly design until running in is finished (10 tanks of fuel)
After running in is finished, set idle around 3000RPM
Stop engine, close mix control valve 15°, note idling RPM
90° opened position from where max idling RPM is gotten is
    maximum mix control valve position
    Mixture Control Valve Position;
Never ever attempt to adjust until needle valve modification is performed
Open mix control valve one turn (360°), open & close a few
    times to be sure there is no resistance during throttle motion
Close mix control valve 30°
Rotate throttle until resistance is felt when opening throttle
    from closed position
Open mix control valve approximately 90° from this point-this
    is the preliminary mix control valve position
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