Hi guys, have decided to fit a 30rpm DC motor to my rod drier as I keep burning out the syncronous motors supplied with it.
I've got hold of a 30rpm DC motor that will do the job but not sure what power source to use as the motor is rated 30Ma.
I've found power sources that are rated 2 amp, 3 amp and higher but are these too powerful to run this motor?
I live over here in the UK so all our power is 240volts by the way.
Many thanks for any help.
Philip

Here's the link to the motor I am looking at.

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There is no harm in using a power supply that has a higher amp rating. The important part is to have the right voltage. If you can adjust the voltage so much the better. Assuming it is a real DC motor, the lower the voltage the lower the RPM's.

Russ in Hollywood, FL.

Thanks Russell, that's what I hoped would be the case.
I can get hold of a variable voltage power supply but was worried the higher amps might be a problem.
Does anyone else have problems with the syncronous motors burning out?
Cheers,
Philip

In general, an AC synchronous motor won't last as long as an induction motor. As with any product different quality levels can be had. In your case, make sure it is a 240 volt/50 hertz motor. Next would be to consider its torque rating. There is a big difference between a Papst or Hurst synchronous motor than some cheap 3rd world offering. After all, did you ever see one fail in your record player?

The advantage of a synchronous motor is constant speed at low cost (but low starting torque). I would say it is the right tool for your job. On the other hand, I think a DC motor is superior for wrapping the guides.

Russ in Hollywood, FL.

Hi Russ, do you have any info or links to these suppliers?
Philip

Phillip,
I have built up and sold a lot of 30 volt dc motors and power supplies to use with a power wrapper.

If you drop me a line, on my e-mail, I will send you some sources for equipment.

Roger

hflier@comcast.net

Phillip,
Here is a picture of a recent unit that I sold that includes a variable power supply, a reversing switch on the power supply, a foot pedal to vary the voltage and a 30 volt DC motor that spins at 1000 rpm.

By using a gear motor, all of the speed reduction is done in the motor, so you don't have to run multiple pulleys and belts. Just use a pair of pulleys the same size on motor and head stock and you will be set.

[www.rodbuilding.org]

Roger

Phillip Roger help me put one together and it works great i have a unit llike the one in the link and also for my rod dryer

Bobby Stout
Bloomburg, TX

I use a DC drill motor... It was a cordless that had a gear reduction unit... works very well.