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OS GT15 HZ II Petrol with Powerboost Pipe Combo # OS38157 529,90 €

Tue, 15 Sep 2026 09:22:21 +0200

The O.S. GT 15 HZ II 15cc petrol engine is designed for helicopters of the 700 class. Thanks to the new enlarged cooling head and additional cooling ribs on the crankcase, the engine runs cooler by approx. 12 ° C and can be adjusted much better than the previous version. Likewise, the cylinder head has been revised, which is good for the running behavior.

Specification

Diameter of fixing hole [mm]:	4.2
Bore [mm]:	27.7
Width [mm]:	61
rpm range, approx.:	2000 -16000
All-up weight [g]:	1038
Height approx. [mm]:	109,6
Stroke [mm]:	24,8
Cylinder capacity [ccm]:	14,95
Cooling system:	Air
Length to hub:	90,2
Output [W]:	2.76
Output [kW / PS] at [rpm]:	14000
Carburetor :	WT-1067
Shaft thread:	UNF5/16-24

The O.S. GT 15 HZ II fits into the models:

Align 700N
Goblin 700

OS Power Boost Pipe 55 III # OS72149000 119,90 €

Mon, 01 Dec 2025 09:39:02 +0100

High-performance silencers use for: Align 55H Engine, OS MAX 50, OS MAX 55 HZ

OS Power Boost Pipe 105 # OS72146000 209,90 €

Tue, 15 Sep 2026 09:22:21 +0200

High-performance silencers for OS MAX 105 HZ / HZ-R motors.

OS Max 55HZ HYPER # OS15630 294,90 €

Mon, 01 Dec 2025 09:39:02 +0100

OS Max 55HZ HYPER

8.93 cm³ capacity
High-performance helicopter motor for helicopters in the 50 class.

Technical information

Distance of screw hole / longitudinal [mm]:	17,5
Distance of screw hole / crosswise [mm]:	44
Item Number Manufacturer:	15630
Model:	2-Takt Nitro
Diameter of fixing hole [mm]:	3,2
Bore [mm]:	23
Width [mm]:	52
rpm range, approx.:	2000~20000
All-up weight [g]:	408
Height approx. [mm]:	91
Stroke [mm]:	21,5
Cylinder capacity [ccm]:	8,93
Cooling system:	Air
Length to hub:	76,6
Output [W]:	1,57 (2,13)
Output [kW / PS] at [rpm]:	17000
Carburetor :	40L
Shaft thread:	UNF1/4-28