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Manuals & SupportHuge power and performance!
In order for 90-sized machines to nail huge maneuvers and hardcore, smackdown-style 3D it's all about power, and the 105HZ-R has it in abundance. Displacement has been increased by 15%, while a huge venturi rams air into the carburetor, producing massive power. Plus, it fits in a .90-sized mounting pattern!

- Featuring the displacement of a 1.05 in the mounting space of a .90.
- More displacement means more power, and these engines boost displacement by 15%!
- A huge venturi boosts output even further.
- The machined, blue anodized heatsink head is light in weight, and cools the engine efficiently.
- An extra feature on the 105HZ-R is the pressurized DRS (Demand Regulator System), which ensures consistent fuel flow regardless of the heli's attitude.
Product Specifications
Specs
Bore | 1.14 in (29 mm) |
Carb Type | O.S. 61G rotary |
Crankshaft Threads | UNF5/16-24 |
Cylinders | Single |
Displacement | 1.048 cu in (17.17 cc) |
Power Type | Glow |
HP | 3.8PS 3.75HP @ 15,000 rpm |
Plug Type | #8 glow plug |
Product Height | 3.1 in (79 mm) |
Product Length | 3.2in (82.6 mm) |
Product Width | 2.4 in (61 mm) |
Recommended Fuel | Heli blend glow fuel with 15% nitro content |
RPM Range | 2,000 - 16,500 rpm |
Stroke | 1.02 in (26 mm) |
Total Weight | 21.5 oz (608 g) |