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OS Engines MAX-91HZ-PS Engine w/61B-P Carburettor

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O.S. Engines
$449.95
SKU:
OSM18620

 Product Description

OS Engines MAX-91HZ-PS Engine w/61B-P Carburettor
 
Overview

Give your RC heli aggressive power with the 91HZ-R Speed Engine from O.S. Engines; designed with the 3D pilot in mind.

Features
  • PD-08 pump works with a matched 61B-P carburetor and integral regulator to deliver a steady fuel supply at any attitude even during the most adventurous 3D manuevers
  • Short rectangular heatsink can be entirely enclosed inside cooling shroud to lower operating temperatures
  • Newly designed piston and crankshaft further reduces vibration and improves torque stability over entire RPM range
  • Thermo insulator on carburetor blocks engine heat to ensure more stable fuel/air mixture
  • Pull pull throttle setup

For the most extreme 3D manoeuvres, your RC heli needs the 91HZ-R Speed Engine from O.S. Engines. The Demand Regulator System in gives you consistent fuel delivery from full to empty. This heli engine has 165° exhaust timing for, giving you optimal horsepower and stable hovering. O.S. Engines have included a newly-designed combustion chamber, which has been shaped to match the 61F big bore carburettor and advanced exhaust cylinder timing. This carburettor is designed to give stable horsepower at 70-80% throttle; widely used in 3D flight. The engine's crankshaft counterweight also reduces vibration at high RPM. Take your 3D flying to the next level and order the 91HZ-R Speed Engine today. Please take note of the below carburettor adjustments. For the high speed needle valve, turn approximately 30° (3-4 clicks) during initial adjustments, then approximately 15° (1-2 clicks) when making final adjustments. For the medium speed needle valve, turn approximately 30° (3-4 clicks) at a time.

Specifications

  • Displacement 0.91 cu in (14.95 cc)
  • Bore 1.09 in (27.7mm)
  • Stroke 0.98 in (24.8mm)
  • Practical RPM 2,000 - 16,000
  • Power Output 3.4 hp @ 15,000 RPM
  • Weight 1.4 lb (635g)

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