A BASIC GUIDE TO SUCCESSFUL |
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| chapter seven | |
| Connectors | |
| Many people,
especially those coming from radio control model car
racing use the car type connectors for electric flight.
Unfortunately they are not really up to the job, their
resistance to current flow is rather high and the pins
soon become a loose fit in the sockets making the
situation worse. The AMP Mate-n-Lok plugs and sockets
look similar but are much better suited to electric
flight with loads below 25 amp if the sockets are fitted
with the upgraded (phosphor-bronze) insert. These are not
redily available now to my knowledge. The 4mm gold plated type of connector can handle 50 amps with ease, rather 'overkill' for the systems described here but they are very reliable and deservedly popular. Often sold by through your local model shop or various mail order specialists. 2mm diameter versions are also available and are suitable for SPEED 400 size motors. The 4mm connectors available from 'Kontronic' are also excellent and easier to solder on to your wires than the gold plated types. Being single connectors rather than pairs like the Mate-n-Lok type extra care is needed to avoid incorrect connection of components. Use the (usually) provided heatshrink tubing to insulate all but the working surfaces of these plugs and sockets, sockets should be fully sleeved even overlapping the open end a little. When soldering connectors to the battery good practice is to use a plug on the positive terminal and a socket on the negative terminal. Likewise a socket on the positive output from the switch or speed controller feeding a plug on the positive motor terminal. Either the negative or positive side of the connection from switch to motor may pass through a fuse. |
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