OS Max 105HZ-R # OS18750

These are the engines that precision aerobatic and 3D heli pilots have been waiting for! In order for 90-sized machines to nail huge maneuvers and hardcore, smackdown-style 3D it's all about power, and both the 105HZ-R have it in abundance. Displacement has been increased by 15%, while a huge venturi rams air into the carburetor, producing massive power. Plus, they fit 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 DRS (Demand Regulator System), which ensures consistent fuel flow regardless of the heli's attitude.

Description
17.17 cc displacement
Twin-ballraced high-performance helicopter motor. For uniform fuel supply, a regulator is flanged to the carburettor.

Specification
Cooling system: Air
Width [mm]: 61 mm
Shaft thread: UNF 5/16-24
Distance of screw hole / longitudinal [mm]: 25 mm
Carburetor : 61G
All-up weight [g]: 608 g
Height approx. [mm]: 100,5 mm
Diameter of fixing hole [mm]: 4,2 mm
rpm range, approx.: 2000 - 16500 U/min
Bore [mm]: 29 mm
Distance of screw hole / crosswise [mm]: 52 mm
Cylinder capacity [ccm]: 17,17 cm³
Output : 3,8 HP @ 15000 RPM
Length to hub: 82,6 mm
Stroke [mm]: 26 mm

O.S.
Field of application: Helicopter
incl. silencer: No
Fuel: Nitro
Model: 2-Stroke Nitro
Item Number Manufacturer: 18750 / OSMG1961