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

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Expected Availability: Early January

List Price:  $599.99
Price:  $379.99 & FREE SHIPPING
You Save:  $220 (37%)
Updated on Dec 15, 2017 11:34:03 PM

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

Perfect for larger 2-stroke .61-.91 class models, and 4-stroke .91
    class models
Starts easily using a radiance driver and glow plug-eliminates ignition
    module and minimizes weight
61H carburetor with PD-08 pump system
Shell type roller bearings
2 year limited service warranty through Pastime Services beginning at date
    of purchase

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

Fuel: Gasoline and 2-cycle oil in a 50:1 mixture
Prop depending upon airplane: Sport,13x8-11
Acro, 14x8-10
Scale, 15x6-8
Radiance starter & field equipment

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)
Distance between Mounting Hole Centers Exact Same Side: 0.98" (25mm)
Distance between Mounting Hole Centers Opposite Side: 2.04" (52mm)
Width at Mounting Tabs: (61mm)
Width of Crankcase below Mounting Tabs: 1.7" (44mm)
Width from Crankcase Center to Tire Outlet: 4.4" (112.3mm)
Height/bottom of Mounting 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 Modification;
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
    gradually 15° per 2nd as RPM increases
Open needle valve 90° even more from point where max RPM is gotten
Fly model until running in is finished (10 tanks of fuel)
After running in is finished, set idle around 3000RPM
Stop engine, close mixture control valve 15°, note idling RPM
90° opened position from where max idling RPM is gotten is
    optimum mixture control valve position
    Mixture Control Valve Position;
Never aim to change until needle valve adjustment is carried out
Open mixture control valve one turn (360°), open & close a couple of
    times to be sure there is no resistance during throttle movement
Close mixture control valve 30°
Turn throttle until resistance is felt when opening throttle
    from closed position
Open mixture control valve around 90° from this point-this
    is the preliminary mixture control valve position
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