Reversing a single phase motor.

[ukracer]

I have a single phase motor running a sanding belt.
The belt does not stay on running clockwise. Looking at the pulleyside of motor.



It stays on manually turning anti click wise.
I want reverse the motor but i am not sure its as simple as reversing live and neutral.

 

[BrokenBiker]

You have to reverse the start windings as far as I know.

Can you not just put a bit of a crown on the idle wheel?

 

[ukracer]

You have to reverse the start windings as far as I know.

Can you not just put a bit of a crown on the idle wheel?

The idle wheel is adjustable. But it still wont stay on.

 

[roofman]

Google Image Result for https://www.electro-tech-online.com/attachments/44d2e4f1-c73b-456c-81c2-2500c01f9ac8-jpeg.112452/

 

[Cato]

Unless I'm missing something (entirely possible) it won't stay on running anti-clockwise at working speed either. Turning by hand there won't be any side thrust from the drive grooves, but that'll come in at working RPM.

 

[supraweld]

Sounds dumb but are the pulleys correctly aligned? Use a straight edge against both pulleys

 

[Agroshield]

Jury rig it to run the other way by rotating the motor 180 degrees in plan. Test whether the belt stays on. If no different to existing, the problem is not the rotation direction.

As shown, it might be good to run so you are pushing the piece to be linished towards the wall to resist the belt drag.

If it runs the other way, the belt will try to suck the piece (and potentially you and your long hair and your kipper tie) towards the wall and into the machine.

 

[Turbo]

The way the grooves are angled on the drive tyre of the motor will nauurally make the belt come off.