REV Engines REV 55 User Manual

Safety Precautions

This engine is for experienced flyers only and could cause serious harm if used incorrectly. Always use care when running
large gas engines.
Read this manual in its entirety before commencing use of this engine.
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This engine is specifically designed for use on a radio controlled model plane. If it is used for any other purpose, we cannot be
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held responsible for its reliability or safety.
Check the propeller prior to each use and replace if damaged.
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Always mix fuel in a well ventilated space.
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Never operate this motor or fly alone
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Keep clear of the prop while motor is running.
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Engine can draw any loose items into propeller. Do not run engine near loose debris, dust, loose clothing or long hair
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Any one in the immediate area should wear safety specs while motor is running
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Never stand in front or to the side of propeller while motor is running. Always stand behind
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Always install ignition kill switch for emergency use
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Check propeller is secure before each start
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Ensure idle stop screw is adjusted to allow engine to stop when carburetor is fully closed
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Ensure spinner cone does not touch the propeller
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Never operate engine indoors or in a confined space
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Keep immediate area clear of spectators
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Gasoline is extremely flammable. Always allow engine to cool before refueling and keep fuel away from other ignition sources
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Always perform Radio range check before flying with engine running. If glitches are noticed, do not fly. Check spark plug lead
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for holes or nicks and check there is no vibrating metal to metal connections

Mounting the engine

Make certain the engine is mounted on aircraft grade plywood firewall with a thickness of at least 6mm and is firmly bolted
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using all four mounts. Large flat washers are recommended on the back side to prevent crushing of plywood.
We recommend blue Loctite on all bolt connections to prevent any bolts coming loose during flight. Regularly check all
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connections to insure their integrity.
Be careful using shims or spacers behind mounting brackets and always make sure the firewall connections are flat so as to
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not put a twisting load on the crankcase.
Ensure the carburetor has plenty of clearance, allowing plenty of airflow to achieve good aspiration
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This carburetor is spring loaded to idle/cut off in case of throttle linkage or servo failure. As a personal preference this can
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be disengaged if desired but it is not recommended for safety reasons
Soft mounts may be used but beware that excessive movement can cause problems with throttle linkages and cowl
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penetrations
The throttle arm should be fitted with a ball link to pushrod to prevent any vibration. Do not use any metal to metal
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connections that may vibrate and cause radio interference (RF noises).
The choke can be operated manually or by mini servo.
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As this engine has a pumped carburetor the position and height of the fuel tank can be freely selected. The tank will
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need to be vented but no back pressure is required from the exhaust system.
Make sure engine and firewall are secured.
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Make sure you measure, align and drill the firewall with the correct bolt pattern. Misalignment of the bolt pattern will
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put undue stress on the mounting tabs which may cause them to crack during normal operation.

Setting up ignition

When setting up the ignition system, do not use light gauge wire for supply to ignition module.
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The ignition runs on a standard 4.8-6V battery pack. We recommend using a 900mah pack as a minimum. Higher
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voltage packs (such as 7.4V LiPo) can be used ONLY with a reliable voltage regulator of 6V or lower.
We recommend using a high quality heavy duty radio switch for ignition.
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Congratulations on your purchase of REV Gasoline Engine
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