Home > Products > OS Engines > .91 SX-H Ring C Spec PS

OS Engines

Motor
- OMA-5025-375
- OMA-5020-490
- OMA-3825-750
- OMA-3820-1200

For Helicopter
- FSa-110
- FS-62V
- 91HZ-R 3D
- 91HZ-R 3C
- 91HZ-R
- 91HZ
- .91 SX-H Ring C Spec PS
- .70 SZ-H R 3D
- .50 SX-H R Hyper
- .50 SX-H R
- .37 SZ-H R
- .32 SX-H R

For Car
- MAX 21XZ-R
- GT55
- GT33
- 30VG(P) - SR
- 30VG(P)
- 21XZ-R Ver.II
- 21XZ-R
- 21VZ-RV2
- 21VZ-BV-Spec
- 21RG-X
- 19XZ-B
- 18TZ-TX
- 18TZ(P)-T
- 18CV-R
- 15CV-RX
- 15CV-R(P)-T
- 15CV-R(P)
- 15CV-R
- 12TZ(P) - T5
- 12TZ(P) - T3
- 12TR
- 12CV-RX
- 12CV-R(P)-T
- 12CV-R(P)
- 12CV-R

For Boat
- .21XZ-M
- .21XM VII

Accessories
- OS-Front Ball-Bearing for 12XZ
- OS-Cylinder & Piston Assembly for 21XZ-R
- OS-Connecting Rod for OS Speed 21VZ-B V-Spec
- GLOW PLUG NO7



.91 SX-H Ring C Spec w/Pump

All the features of .91 SX-H -- now with a pump!
This new, pumped version improves the .91 SX-H's performance with the addition of a Perry pump, which stabilizes fuel delivery regardless of fuel levels or the heli's attitude.
The new 60M carburetor has a larger bore (10.6mm) to help increase engine power.
Beside sharper looks, the round, blue-anodized head features a re-designed combustion chamber to complement the pump system, along with horizontal fins for better cooling.
Retains the high-performance advantages of the non-pumped version - including a lighter-weight piston and conrod, plus a more balanced crankshaft that significantly reduces high-rpm vibration.
Maximum displacement allowed in AMA-sanctioned FAI F3C heli events.

The pump is an exceptional benefit for 3D fliers, and is less complicated than in-flight fuel mixture control systems.

SPECIFICATIONS

Code Number : 19060
Displacement : 0.912 cu. in. (14.95cc)
Output : 3.1 ps @ 15,000 rpm
Bore : 1.09 in (27.7mm)
Practical rpm Range : 2,000-16,000
Stroke : 0.98 in (24.8mm)
Weight : 20.5 oz (581g)
Includes : #8 glow plug