Product Details
Key Features
- Ideal for use in any 50 class helicopter
- Head design offers improved combustion efficiency for stable hovering and aerobatic flight
- Large 0.39″ (10mm) diameter carburetor intake for greater running stability
- Two year limited warranty
In The Box
- One O.S. Max .50 SX-H Helicopter Engine with Hyper Cooling Head
- 60LH carburetor
- decal sheet
- #8 glow plug
- instruction manual
Needed to Complete
- 10% to 30% nitro Fuel with at least 18% lubricant (Helicopter Mix)
- Starting equipment
Product Specifications
| Manufacturer # | 15550 |
| Crankshaft Threads | UNF1/4-28 |
| Bore | 0.866 in (22mm) |
| Crankshaft Type | Threaded |
| Power Type | Glow |
| Plug Type | O.S. #8 |
| Stroke | 0.847 in (21.51 mm) |
| Displacement | 0.49 cu in (8.17 cc) |
| Product Length | 3.4″ (85.7mm) from backplate to front bearing |
| Product Weight | 14.33oz (405.4g) |
| Cylinders | Single |
| Product Width | 2.0 in (52 mm) at mounting tabs |
| Engine (Only) Weight | 14.33 oz (406 g) |
| Product Height | 3.6 in (92.3 mm) bottom of crankcase to top of cylinder head |
| RPM Range | 2,000 – 20,000 rpm |








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