Lathe Reverse

[blackburn mark]

The wiring depends on what kind of single phase motor it is.
You will likely find there are 2 coils (your main run winding, then a smaller start winding) with all wires brought out to the terminals.

IIRC to change direction, you need to switch the position of the start winding/capacitor, however it's been a good few years since I've looked at a suitable diagram to be 100% sure about that.

I "think" I may have cracked the logic of what I am seeing.....



Having not taken note of the drum switch position, it is possible that in both forward and reverse working conditions, the only change had been the capacitor (its hard to describe the logic, its been a bit of a Rubik's cube)

I'm stuck at work for three days now so I cant test yet.... I think you guys talking of a capacitor switch were on the right track.

Cheers for the help guys, you may have saved me from surrendering the cash and lumping for an inverter and three phase motor.

I might finally get some use out of my thread cutting gearbox now (its metric so I cant easily disengage without losing position - I can just reverse out)