Radio Control Engines
| Everything you need to know about Choosing, Running and Maintaining RC Engines |
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Nitro Engines for RC Cars, Airplanes and Boats |
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Starting and Running a Gas RC EngineStarting:There are several methods of starting gas motors that work very well but here is a method that's good for new motors when you don't know exactly what it will take to get them running.Throttle set to 1/4. Choke closed. Ignition on. Flip the motor tell it fires (or in the case of a spring start motor, use the spring) and stops. Throttle to 1/8th Choke open. Ignition on. Flip tell it runs, or in the case of a spring start motor, use the spring. On the larger gas motor's, electric starters are really not necessary. Running range check:This is something you must do. This step is a must, do not fly the plane with out doing this.With the motor not running and the antenna down on the radio, do a range check, i.e. walk away from the plane tell the surfaces start to jitter, in the case of PCM, keep moving the sticks tell the movement of the surfaces becomes jerky. At this point, walk back to the plane enough to get a solid signal then walk around the plane keeping the same distance. Note the min distance and if there where any places as you walked around the plane where the signal faded. Next, start the motor and do the range check again, with a helper holding the plane, walk out and around the plane. Do this several times at different throttle settings including full throttle. It is likely that you will not have as much range as before, what you need to do is determine how much range you lost. 10% is considered ok, 15% borderline. If you have lost more than that, you should not fly the plane tell you have gone through the system and found the cause of the interference. Break In:Running in a gas motor is not like running in a glow or nitro engine.Due to the difference in design and running requirements, a gas motor should be run in in the air. In most cases, you should do your running range checks, motor off, motor on, and insure the needle settings are close enough to fly, erring on the rich side, then fly the plane in a gentle fashion for several flights. Gentle being no extended full throttle usage, no extreme maneuvers. After three flights of at least 10 minutes, you are free to fly as you please but remember, the nicer you are to the motor when it's new, the better it will run in the long run. The fuel you use can be the same as the fuel you plan to fly with, there is no need to use a different oil or a different ratio. If you just have to run it in on the ground, you should use a propeller several sizes to small, i.e., if your motor normally turns a 26-10, use a 22-10 on the ground and make sure not to exceed red line by going to full throttle. This will keep the load low and the internal temps down. |
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