Motors! motors? and more motors!!!!!

[B BParticipant @bb42502]

Most of us modlers use motors to drive our models. Well when it comes to electric motors there is a very big selction of these on the market. But which one is right for your model.

Not being an expert, I personally have to rely on what is written on the box and make sense of that. How many of us have installed a motor/s into our ship and find out that we can sail from only a few minutes and then the batteries are flat, while other boaters can sail all day on one set of batteries. I have been in that quandery before and I have seen this at our club as well.

 

I have rewired a few motors with good success. Some motors were current guzzelers with very high speeds and drained current from the batteries at high rates. On opening the motors we find different thicknesses of wire wrapped onto the armatures. Look at it this way, imagine the wire being like a hose pipe. The bigger the pipe the more water can pass through it in large volumes at high pressure. The thin hosepipe can only put out a little amount of water even if there is a high pressure

The wire is exactly the same, you can have a high current (amps) but only so much can pass through the wire. A thick wire means less resistance therfore a large amount of current can pass throught the wire where as a thin wire puts up a resistance and only allows a little amount of current to pass through it.

When rewiring motors with thinner wires two things will happen the spedd of the motr is reduced and the current drawn from the batteries will also be reduced. this means that you will be on the water for a much longer time.

 Remember a motor under strain will also draw large volumes of current. this can be because of trying to turn large props or there is resistance from tight seals on the proppler shaft which have not been lubricated etc etc. Reduction gears or pulleys can also be used if you are turning large or high pitch props.

 There is a very good website on the Mabuchi motors which explains everything about the motors from the break down of the motors to very technical information. I hope that this will help all model boaters out there.

Any other advice is welcome

 

The website is;  http://www.mabuchi-motor.co.jp_US/technic

Edited By B B on 19/09/2010 08:42:37

Edited By B B on 19/09/2010 08:49:08

[B BParticipant @bb42502]

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