12 golf buggy motor

[Gregory]

I have a 12 v Dc golf buggy motor.
I have fitted the motor to my milling machine as a table feed .
I am going to fit a rotary switch to the motor , being a 3 position switch to change the polarity from forward and reverse
Ie + And - to off then - to + changing direction . I will also install a variable pot give feed control.
Is there any thing I should any thing I should be a wear of that I am doing wrong. What size pot should I use

 

[Nigel Goodwin]

You use whatever pot the speed controller requires?, presumably you have the speed controller as well as the motor?.

 

[alec_t]

You wouldn't normally control a motor as powerful as a golf buggy one by simply putting a variable resistance in series with it, if that was your intention. PWM would be the normal method.

 

[MaxHeadRoom78]

What is the current rating of the motor?
There are many PWM based controllers on ebay cheap, if needed
You will need a beefy 12v supply however.
Most use a ex T.M. motor as there are plenty of mains fed drives available for these.
Max.

 

[dr pepper]

Make yourself a little chip guard if you think they might get into the motor.
+ be aware that the motor may not be continuously rated, so might not like making a 20 minute cut, but thats going to be unlikely.
Did you connect the motor with a flexible coupling?

 

[MaxHeadRoom78]

One other caution is ensure that it is not a wound field series motor, must be shunt for that application, if P.M. field, then no problem.
Max.
.

 

[Gregory]

How do you tell the difference between a field series motor and a shunt Motor.

 

[Gregory]

This is the motor and information .
There is no flex coupling as I have made it direct drive from the reduction boxI have supplied a photo of the power supply v 240 ac to 12v Dc The motor maybe 180 w

 

[MaxHeadRoom78]

Short the motor leads and see if it is harder to spin, if so it is a P.M. motor and therfore , no problem.
At 160RPM it must have a gear box?
Max.

 

[dr pepper]

If spanners etc stick to the motor its permanent magnet.
Coupling looks acceptable.
You need some kind of pwm speed controller, maybe this:
**broken link removed**
Whatever you go for massivly overate it, stuff these days is under rated.

 

[alec_t]

The motor plate says "TYPE PM5 .......", so I'd guess it's a PM motor.

 

[MaxHeadRoom78]

If spanners etc stick to the motor its permanent magnet.
.

Non of the P.M. T.M. motor I have exhibit that, the field is shunted by the metal frame.
Max.