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Unread 11-08-2006, 14:57
Andy A. Andy A. is offline
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Re: CIM Voltage and Motor Suggestions

The CIM motors are sealed units, meaning that the motor can has no venting and the armature (assumingly) has no fan on it like you might find on a Fisher Price motor. This means that all the heat generated by the motor has to migrate out through the motor can, either by radiation or through the bearings.

Neither is efficient or fast, and I suspect that the heat generated is going to fry the armature long before cooling the can with heat sinks and fans will do you any good. The CIM motors get pretty toasty as it is at 12 volts. As was stated, at double the power output, the motor will need to dissipate 1200 watts. To put that in perspective, an electric space heater I own has a maximum of 1500 watts.

You might consider removing the end cap and drilling out some holes in it. Then place a muffin fan behind the motor blowing into the now perforated end cap. The added airflow might help keep the motor cool while running. It will certainly help speed up cooling it in between run times. Just how much of an improvement is might make is difficult to say, but some air flow is better then none.

Modifying motor parts, especially removing metal, can be a bit hazardous to the motor's health, and I wouldn't recommend that you try it unless you are confident you can do so with out risking damage to the motor.