In model boats, there are several sources of radio frequency interference. the most important one is the rfi generated by the main electric propulsion motor(s). a secondary, less important, source is the movement of metal surfaces (especially dissimilar metals) across each other.. Hi brian suppression capacitors need to be as near to the scource of interference as possible. if you put them six inches away (as suggested in your post) the wire between the motor and the capacitor will try to act as an ariel and radiate the rubbish generated by the brushes in the motor. short wires and good connections is the order of the day. Motor suppressors and condensors for electric motor use.
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Borders model boat club wiring model boats the motor must be installed in the model so that it lines up with the propeller shaft, and ideally if later on there is a radio interference problem, an additional ceramic capacitor should be fitted. Electrickery . motors used in model boats are called dc motors, i.e. the motor rotates when a direct current is applied. you don't need to know the "why's and wherefore's", just take my word for it. batteries supply direct current and so are the most suitable power source.. Capacitors are usually the most effective way to suppress motor noise, and as such we recommend you always solder at least one capacitor across your motor terminals. typically you will want to use anywhere from one to three 0.1
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