In Stock

105HZ-R DRS 1.05 Helicopter Engine
Item No.
OS Engines -
OSMG1961
$624.99
In Stock

105HZ-R DRS 1.05 Helicopter Engine
Item No.
OS Engines -
OSMG1961
$624.99
- Same mounting dimensions as a .90 cu in engine
- Machined blue anodized aluminum heatsink cylinder head
- Velocity stack increases airflow and enhances engine performance
- Pressurized DRS (Demand Regulator System) ensures consistent fuel flow regardless of the helicopter attitude
- Backplate accepts the Futaba BPS-1 RPM sensor for the GY701 and CGY750 gyros
- Ideal bore and stroke ratio for lowest vibration
105HZ-R DRS 1.05 Helicopter Engine
Item No.
OS Engines -
OSMG1961
Product
$624.99
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Estimated Total:
$624.99
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Product Details
In The Box
- (1) 105HZ-R DRS 1.05 cu in Helicopter Engine with 61G Carburetor
- (1) #8 Glow Plug
- (1) Air Funnel
- (1) Check Valve
- (1) 0.1mm Head Gasket
- (1) 0.2mm Head Gasket (installed)
- (1) Product manual
Needed to Complete
- Fuel: Heli blend with 15% nitro content
- Glow starter and field equipment
Quick Links
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
Manufacturer # | 18750 |
Displacement | 1.048 cu in (17.17 cc) |
Product Length | 3.2in (82.6 mm) |
Bore | 1.14 in (29 mm) |
Power Type | Glow |
Stroke | 1.02 in (26 mm) |
Plug Type | #8 glow plug |
Total Weight | 21.5 oz (608 g) |
Product Width | 2.4 in (61 mm) |
Cylinders | Single |
RPM Range | 2,000 - 16,500 rpm |
Product Height | 3.1 in (79 mm) |
Crankshaft Threads | UNF5/16-24 |