O.S. MAX-61SX/RX-H RING WC Engine Owner's Instruction Manual

This manual introduces the use of OS engines, including safety, basic engine structure, installation, starting, maintenance, etc.

Brand: O.S. Engines
Document type: User Manual
Language: English
Pages: 36
File format: PDF
File size: 1.1 MB
Published: 08 August, 2012
Updated: 30 September, 2023
Model: MAX-61SX
MD5 checksum: D8CE13B72276E6969CA4A5775C31F6F1
PDF: O.S. MAX-61SX/RX-H RING WC Engine Owner's Instruction Manual PDF

About this manual

This instruction manual covers the safe operation of the O.S. MAX-61SX and 61RX-H RING "WC" internal combustion engines designed for FAI World Championship Class F3C model helicopters. It includes critical safety warnings regarding fuel toxicity, flammability, and carbon monoxide exhaust, as well as instructions on mounting the engine securely to prevent distortion.

What's inside

Safety Instructions and Warnings
Introduction
Basic Engine Parts
Installation of the Carburetor
Installation of the Engine
Facts About Glow Plugs
Fuel and Carburetor Controls
Starting and Running-In
Adjustments and Subsequent Readjustments
Care and Maintenance

Specifications

Displacement	9.95 cc (0.607 cu.in.)
Bore	24.0mm (0.945 in.)
Stroke	22.0mm (0.866 in.)
Practical R.P.M.	2,000~18,000 r.p.m.
Power output	2.2 bhp / 16,000 r.p.m.
Weight (SX-H)	600g(21.2oz.)
Weight (RX-H)	597g(21.1oz.)

Frequently asked questions

What type of fuel is recommended for this engine?

The manual recommends model glowplug engine fuel of good quality, preferably containing a small percentage of nitromethane.

What is the recommended power source for heating the glow plug?

A 2-volt rechargeable lead-acid cell (at least 5Ah) is preferred over a large heavy-duty 1.5 volt dry cell.

What class of competition is this engine aimed at?

The MAX-61SX-H RING "WC" is aimed at FAI World Championship Class F3C competition.

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