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O.S. MAX-91HZ-R Heli Engine

Model No.: OS-18640

Price: US$399.00

Availability: This product is currently SOLD OUT
Order quantity:
Out of Stock


O.S. MAX-91HZ-R 3D Ringed 61B-PII w/Pump 2-Stroke Engine for 3D Helicopter


Conversion Set consists of Carburetor integrated with regulator, Back plate fitted with a pressure nipple and check valve.

- This is a main fuel tank pressurized regulator system integrated version of the 91HZ.
- Newly designed 61E Carburetor integrated with a regulator surely regulates pressurized fuel.  As with other 91HZ engines,
   it features twin needles which can adjust hovering and high speed flight independently.
- Regulator is located at a place where heat does not suffer and access is easier.
- The system ensures stable fuel supply irrespective of rapid model attitude and G changes.
- The system does not use muffler pressurized fuel system which requires needle adjustment according to the change of
   muffler pressure. 

With back-to-back FAI world championships in 2005 and 2007, the 91SZ-H was a winner by anyone's standards. Now there's the 91HZ – a 91SZ-H redesigned with the help and advice of the world's top pilots. It offers the tuning ease and performance consistency of the multi-time world champion and design innovations that promote improved cooling, a tighter compression seal – and tuning ease!


Package Included:
O.S. Max  91 HZ-R Helicopter Engine
Instruction Manual

Displacement : 14.95cc (0.912cu.in)
Bore : 27.7mm (1.091in)
Stroke : 24.8mm (0.976in)
Weight : 625g (22.05oz)
Output : 3.4ps/15,000r.p.m.


Code No. 18640

This product was added to our catalog on Tuesday, 23. March 2010.
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