O.S. Engine OS-18510 - 91RZ-H DH Ring Engine with 60M-C Carburetor (Precision Series)  [OS-18510]

O.S #18510 - OS 91RZ-H DH Ring Engine w/60M-C Carb.
Price:
£189.26
Brand:
O.S. Engine
Model:
OS-18510
Please kindly input your name and email address, we will inform you once we have the restocking.
Or you may find similar product under the
category
Write a review

Engine Performance for Advanced Flying

Designed with experienced model pilots in mind, the O.S. Engine OS-18510 provides controllable power while keeping a neat profile for scale canopies. It is well suited to flight regimes that require smooth throttle modulation and reliable behaviour.

Precision Parts for Consistent Runs

The O.S. Engine OS-18510 incorporates a diecast cylinder head and a ringed piston to improve longevity and stable operation. The 60M-C carburetor with three needle adjustments lets you refine the mid-range characteristics to suit your rotor system and fuel choice.

Key Performance Data

Specifications

  • Displacement: 0.912 cu in (14.95 cc)
  • Bore: 1.091" (27.7mm)
  • Stroke: 0.976" (24.8mm)
  • Practical RPM: 2000-16,000
  • Power Output: 3.3 ps @ 15,000 RPM
  • Weight: 22.0oz (623g)
  • Crankshaft Size: 5/16-24

The O.S. Engine OS-18510 is a capable and tunable unit for pilots who want dependable, adjustable performance in a compact form factor.

Will this engine fit most scale helicopter mount patterns?

It is designed for compact installations common in scale canopies, but always verify firewall spacing and crankshaft size against your airframe.

How often should the carburetor be serviced?

Check and clean the carburetor periodically, especially after dirty fuel or prolonged storage, to preserve consistent jetting and response.

What checks are important after a hard flight or rough landing?

Inspect the mount points, carburetor linkage, glow plug and surrounding hardware for signs of shock or loosening, and correct as needed.

Are there recommended practises for breaking in the engine?

Follow a controlled running-in process with progressive throttle cycles, monitor temperature and adjust needles gradually to establish a stable operating pattern.

Copyright © 2008-2026 rcjaz.co.uk All rights reserved