RB Concept engines, Instruction Manual

Once properly adjusted, the engine should produce a strong, high-pitched

sound at maximum speed, and a thin trail of smoke should be visible from

the exhaust tailpipe.

NOTE: The carburetor settings may change with changes in weather

conditions, fuel, glow plug or exhaust system. After changing any of

these, always richen the main needle ¼ to ½ of a turn and then re-

adjust the main needle again on the track.

NOTE: When the engine stops, the heat of the engine will go into the

carburetor and alter the idle rpm. This can translate into a bad idle

rpm, especially when you have your idle rpm a little low. This will

come back to normal when you have made at least 1 lap on the track

again so the carburetor has reached its normal working temperature.

7) Maintenance

There are some important things you should know about nitro-engines...

These high performance engines are not indestructible and can break if

not enough attention is given to the proper setting and use. No warranty

for these failures exists, and we cannot be held responsible for the use

and treatment of any engine. As you must understand these engines can

make up to 40.000 rpm, and so there are incredible loads generated by

the moving parts of the engine. That is why it is extremely important that

you check your engine on a regular basis to monitor the internal health of

your engine like the play on the crankshaft pin/connecting rod fit, and if

compression is still sufficient. Most failures happen because of poor quality

fuel, bad carburetor settings, bad air filter or excessive wear of the moving

parts.

Attention: The nitro used in the fuel for these engines can

react aggressively with the engine components, so to avoid

internal corrosion we strongly suggest not leaving any fuel

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