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  Electric Motors, Engines & Accessories > Engines R/C Gasoline > Engines R/C Gasoline - 0.0-2.00 Bookmark this Page

O.S. - OSMG1915 OSM38150 38150 531028022492 4531028022492
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Accessories Needed

Replacement & Optional Parts

Easy RC: Engines

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O.S. GT15HZ Gas Helicopter w/o Muffler
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O.S. GT15HZ Gas Helicopter w/o Muffler
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On-line Videos: Video 1 (34.9 MB) Video 2 (YOUTUBE)
Instruction Manuals: Manual 1 (4.5 MB)
Tower Catalog Page: 198

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Tech Notes
      This is the O.S. Engines GT15HZ Gasoline Powered Helicopter Engine
                              without Muffler.

FEATURES: Ideal for sport, 3D and scale pilots Fits most .90 size helis with minor modifications O.S. Walbro developed pumper carburetor for consistent performance regardless of attitude, altitude, or fuel level IG-05 ignition module designed specifically for helis and is compatible with a wide range of battery chemistries including NiCd NiMH, LiPo and Life packs Two year limited warranty through Hobby Services beginning at date of purchase

INCLUDES: O.S. Engines GT15HZ Engine with CM-6 Spark Plug, IG-05 Ignition Module, two Servo Throttle Arms, and Instruction Manual

REQUIRES: Gasoline: Regular unleaded 2-Stroke Engine Oil Ignition Battery: 4.8-8.4V NiCd, NiMH, 6.6V LiFe or 7.4V LiPo pack, at least 1500mAh Muffler: Depending on application

SPECS: Displacement: 0.912 cu in (14.95cc) Bore: 1.091" (27.7mm) Stroke: 0.976" (24.8mm) Practical RPM: 2,000 - 16,000 Output: 2.76hp @ 14,000 RPM Weight: Engine, 26.4oz (748g) IG-05 Ignition Module, 3.2oz (92g) Power Boost Pipe, 7oz (198g) E-4051 Muffler5oz (144g) Carburetor Adjustments; If engine responds sluggishly to increased RPM, turn slow needle right 5 and advance throttle stick gradually If engine hesitates before picking up speed, turn slow needle left 10 to richen mixture Gasoline/Oil Mix: 25:1 Distance/Mounting Hole Centers Same Side: 1.02" (26mm) Distance/Mounting Hole Centers Opposite Side: 2.1" (53mm) Height/Mounting Tab Bottom to top of Cylinder Head: 3.5" (88mm) Height/Crankcase Bottom to top of Cylinder Head: 4.3" (109mm) Width at Mounting Tabs: 2.4" (61mm) Width of Crankcase below Mounting Tabs: 1.7" (42.5mm) Distance between Exhaust Mounting Hole Centers: 1.6" (42mm) Length from Center of Engine to Front Bearing: 2" (52mm) Length from Backplate to Front Bearing: 3.14" (80mm) Length from Center of Engine to end of Crankshaft 3.5" (88mm) Length from Backplate to end of Crankshaft: 4.75" (121mm)

jxs 01/16/13 ir/jxs

– If you need more information, use these O.S. resources –
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Phone: 217-398-8970
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Accessories Needed
This is the O.S. Engines GT15HZ Gas Powered Heli Engine. FEATURES: Fits most .90 size helis, IG-05 module designed for helis, pumper carb for consistent performance, CM-6 spark plug REQUIRES: Unleaded gasoline, 2-stroke engine oil, ignition battery

Accessories for the O.S. GT15HZ Gas Helicopter w/o Muffler

Primary Accessories     Optional Accessories
  Special Stock Number Product Description Parts Saver Eligible Tower's
Low Price
Click to Order Quantity Needed In Cart? Stock
 LXS626 Klotz Gas RC Modelube 16 oz
Qty Discount Available
8.19   In Stock
Subtotal for this Group of Accessories: 8.19  

Primary Accessories     Optional Accessories

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