GT-15 (.91 ci) Gas Single with Muffler and Ignition, by OS Engines
- IG-06 electronic ignition handles 4-6 cell NiCd, NiMH or 2-cell LiPo and LiFe batteries
- Beam mounting design allows engine to fit inside cowls that are sized for 2-stroke .60-.91 and 4-stroke .90 glow engines
- Two year limited warranty
REQUIRES:
- Gasoline: Regular, no need to use high octane gasoline
- Ignition Battery: 4.8-8.4V NiCd or NiMH, 6.6V LiFe or 2S 7.4V LiPo pack, LiPo battery requires voltage regulator
- Propeller: 13x8-11, 14x8-10, 15x8
- Displacement: 0.912 cu in (14.95cc)
- Bore: 1.091" (27.7mm)
- Stroke: 0.976" (24.8mm)
- Practical RPM: 2,000-15,000 RPM
-
Weight: 22.26oz (631g) engine
6.28oz (178g) muffler
3.35oz (95g) ignition module - Width at Mounting Tabs: 2.4" (61mm)
- Width of Crankcase below Mounting Tabs: 1.7" (44mm)
- Length between Mounting Hole Centers: 0.98" (25mm)
- Crankshaft Size: UNF 5/16-24
- Muffler Mounting Angle from center of Engine: 4°
- Needle Valve Mounting Angle from center of Engine: 30°
- Length from Pump to Drive Hub: 4.2" (106.2mm)
- Length from Pump to end of Crankshaft: 5.6" (142mm)
- Length from Pump to center of Crankcase: 1.5" (39.4mm)
- Length from Drive Hub to end of Crankshaft: 1.4" (35.8mm)
- Length/center of engine/opposite side of Muffler: 4.1" (103.3mm)
- Length/center of engine to side of Cylinder Head: 0.96" (24.3mm)
- Length between Muffler Mounting Hole Centers: 1.6" (42mm)
- Length from Crankshaft Center to Muffler Outlet: 4.4" (112.3mm)
Secure Card Transactions
![]() |
Chief's Secure Ordering
Online Orders: | Our Site is Secure! |
Aircraft / Avionics Orders: | (800) 447-3408 |
Radio Control Orders: | (877) 219-4489 |
24 Hour Fax: | (541) 479-4431 |




Chief's Customer Service
Customer Service: (800) 447-3408