Table of Contents
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It is of vital importance, before attempting to
operate your engine, to read the general
'SAFETY INSTRUCTIONS AND WARNINGS'
section on pages 2-6 of this booklet and to strictly
adhere to the advice contained therein.
Also, please study the entire contents of this
instruction manual, so as to familiarize yourself
with the controls and other features of the
engine.
Keep these instructions in a safe place so that
you may readily refer to them whenever
necessary.
It is suggested that any instructions supplied
with the aircraft, radio control equipment, etc.,
are accessible for checking at the same time.
ROTARY ENGINE 49PI
Due to updating and improvement, latest products may
occasionally differ from those shown in the photos.
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Table of Contents
Related Manuals for O.S. engine 49PI
Summary of Contents for O.S. engine 49PI
- Page 1 ROTARY ENGINE 49PI It is of vital importance, before attempting to operate your engine, to read the general 'SAFETY INSTRUCTIONS AND WARNINGS' section on pages 2-6 of this booklet and to strictly adhere to the advice contained therein. Also, please study the entire contents of this...
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Page 2: Table Of Contents
CONTENTS PRE-FLIGHT CHECKING SAFETY INSTRUCTIONS AND SUBSEQUENT READJUSTMENT WARNINGS ABOUT YOUR O.S. ENGINE ENGINE CARE AND MAINTENANCE INTRODUCTION GENUINE O.S. PARTS & ACCESSORIES BASIC ENGINE PARTS ENGINE THREE VIEW DRAWINGS GLOWPLUG ENGINE EXPLODED VIEWS MOUNTING THE ENGINE ENGINE PARTS LIST... -
Page 3: Safety Instructions And Warnings About Your O.s. Engine
As owner, you, alone, are responsible for the safe operation of your engine, so act with discretion and care at all times. If at some future date, your O.S. engine is acquired by another person, we would respectfully request that these instructions are also passed on to its new owner. - Page 4 WARNINGS • Never touch, or allow any object to come • Model engine fuel is also highly flammable. Keep it away from open flame, into contact with, the rotating excessive heat, sources of sparks, or propeller and do not crouch anything else which might ignite over the engine when it is it.
- Page 5 NOTES • • This engine was designed for model If you remove the glowplug from the engine aircraft. Do not attempt to use it for any and check its condition by connecting the other purpose. battery leads to it, do not hold the plug with bare fingers.Use an appropriate tool or a •...
- Page 6 NOTES • • Always check the tightness of the propeller Discard any propeller which has become nut and retighten it, if necessary, before split, cracked, nicked or otherwise rendered restarting the engine, particularly in the unsafe. Never attempt to repair such a case of four-stroke-cycle engines.
- Page 7 NOTES • • Adjust the throttle linkage so that the engine For their safety, keep all onlookers stops when the throttle stick and trim lever (especially small children) well back (at on the transmitter are fully retarded. least 20 feet or 6 meters) when preparing Alternatively, the engine may be stopped by your model for flight.
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Page 8: Introduction
within a housing having an epitrochoidal bore - THE NSU/WANKEL SYSTEM i.e. wide-waisted figure-of-eight Now available in a new and improved shape.Planetary rotation is controlled by an PI(peripheral inlet) model, its outstanding eccentric shaft, an internally-toothed gear and features remain its high specific power output, a fixed pinion mounted centrally on the rear its almost total freedom from vibration, its cover plate. -
Page 9: Basic Engine Parts
Installing the glowplug BASIC ENGINE PARTS Carefully insert plug, with Rotor Housing washer, fingertight only, Engine Mount before final tightening with Front Housing correct size plug Glow plug wrench. Washer Glowplug Drive Hub Carburettor Complete Spinner Nut... -
Page 10: Glowplug
Glowplug life GLOWPLUG Particularly in the case of very high performance engines, glowplugs must be regarded as expendable A specially designed O.S. Type RE glowplug is However, plug life can be extended and engine fitted to this engine Carefully fit plug finger- performance maintained by careful use, i.e.: tight, before final tightening with the correct •... -
Page 11: Mounting The Engine
MOUNTING THE ENGINE Firmly bolt the engine's radial mounting flange Position the fuel tank so that when full, the fuel to the model or to a rigid test stand, using self- level is approximately in line with the fuel jet. locking nuts or secondary nuts locked to the Keep the fuel line short, i.e. -
Page 12: Before Starting 11
PROPELLER BEFORE STARTING The suitability of the prop depends on the size and weight of the model and type of flying. Determine the Tools, accessories, etc. best size and type after the engine has been run in. The following items are necessary for operating Check the balance of the propeller before fitting it to the engine. - Page 13 Glowplug battery Battery leads Battery leads The power source for heating the glowplug may be These are used to conduct current either a large heavy-duty 1.5volt dry cell, or preferably, from the battery to the glowplug. a 2-volt rechargeable lead-acid cell (accumulator). Basically, two leads, with clips, are required, but, for greater conve- If a 2-volt cell is employed,...
- Page 14 Fuel can filter Fuel Can Filter Fit a filter to the outlet tube of your refuelling container to prevent entry of foreign matter into the fuel tank. Silicone tubing This is required for the connection between the fuel tank and engine. Plug wrench Used for tightening glowplug.
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Page 15: Starting
STARTING Now close the throttle to between one-quarter Fill the fuel tank and open the needle-valve 2-3 and one-third open, connect glowplug lead and turns from the closed position. apply electric starter. Prime the engine fairly liberally with fuel through the carburettor. Turn the propeller After starting, allow the engine to warm up for through one complete revolution and prime 5~6 seconds, then remove the plug lead, open... -
Page 16: Running-In("Breaking-In")
RUNNING-IN ("Breaking-in") For running-in, fit the engine with a well-bal- The break-in should be split up into periods of anced propeller intended for actual flight. Use not more than 5 minutes, allowing the engine a fuel mixture as specified. Running-in proce- to cool between spells of running. -
Page 17: Pre-Flight Checking
SUBSEQUENT READJUSTMENT PRE-FLIGHT CHECKING Once the engine has been run-in and the con- Prior to releasing your model for take-off, care- trols properly set up, it should be unnecessary fully check that the engine continues to run to alter the mixture settings; except to make steadily in all flight attitudes: this includes hold- minor adjustments to the Needle-Valve occa- ing the model with the nose pointing vertically... -
Page 18: Engine Care And Maintenance
ENGINE CARE AND MAINTENANCE At the end of each operating session, drain out any fuel that may remain in the fuel tank. Next, energize the glowplug and try to restart the engine to burn off any fuel that may remain inside the engine. -
Page 19: Genuine O.s. Parts & Accessories
O.S. GENUINE PARTS & ACCESSORIES LONG PROPELLER NUT SETS EXHAUST PIPE SPINNER NUT ASSEMBLY ( 73101000 ) 1/4"-28 ( L ) ( 41651010 ) ( 23024009 ) LONG SOCKET WRENCH NON-BUBBLE WEIGHT SUPER FI LTER WITH PLUG GRIP ( 71531000 ) ( 72403050 ) ( 71521000 ) -
Page 20: Engine Three View Drawings
THREE VIEW DRAWING Dimensions(mm) SPECIFICATIONS 4.97 cc ( 0.303cu.in. ) Displacement Bore Stroke 2,500 18,000 r.p.m. Practical R.P.M. 1.27bhp / 17,000 r.p.m. Power output 335g (11 .8oz. ) Weight... -
Page 21: Engine Exploded Views
EXPLODED VIEW N.+3.5 5 C.M2.6 8.6 C.M2.6 8 M.+3 24 M.+3 24 C.M2.6 5 C.M3 10 M.+3 23(9pcs.) Type of screw C … Cap Screw F … Flat Head Screw N … Round Head Screw S … Set Screw... -
Page 22: Engine Parts List
Rotor Gear Retaining Screw 41616000 41820001 41624000 41807004 Seal Spring(6pcs.) Rear Cover Retaining Screw(6pcs.) Thrust Washer (2pcs.) 41633000 Engine Mount 41827002 Rear Bearing Engine Retaining Screw(3pcs.) 41634000 41815009 Carburettor Type 49PI-RN 41618020 Specifications are subject to alteration for improvement without notice. -
Page 23: Carburetor Exploded View & Parts List
CARBURETOR EXPLODED VIEW & PARTS LIST Description Code No. N.+3 6 Throttle Lever 41618400 22081313 Throttle Lever Retaining Screw 22081200 Carburettor Rotor N.+3.5 5 22081811 Throttle Stop Screw 41618110 Carburettor Body Needle Valve Assembly 41618900 Nozzle Assembly -1 41618910 -2 41618920 Needle Valve Holder Assembly -3 23011308 Ratchet Spring... - Page 24 6-15 3-Chome Imagawa Higashisumiyoshi-ku Osaka 546-0003, Japan TEL. (06) 6702-0225 FAX. (06) 6704-2722 URL : http://www.os-engines.co.jp Copyright 2001 by O.S.Engines Mfg. Co., Ltd. All rights reserved. Printed in Japan. 110100...