Lathe motor stalls when *not* under load

[Pete.]

Just looking back at the pics - the belts you tightened look like they don't actually go to the spindle itself. Do they? If they don't then it isn't likely the cause.

 

[ryan2020]

It's a Colchester Master c 1930s. Pete has suggested bearings, above, which isn't something I'd relish doing...

ah its probably worse thinking about it than doing it!

 

[skotl]

Just looking back at the pics - the belts you tightened look like they don't actually go to the spindle itself. Do they? If they don't then it isn't likely the cause.

Not sure what you mean? They go onto a shaft at the back of the gearbox, then driven down to the spindle. Actually - now that I've written that, it makes a little more sense (and presumably means they aren't doing anything with the head bearings).

My feeling is that the belts were so slack that there causing the pulleys to bind - maybe down to a slight imbalance in length between the two belts?.

 

[ryan2020]

Not sure what you mean? They go onto a shaft at the back of the gearbox, then driven down to the spindle. Actually - now that I've written that, it makes a little more sense (and presumably means they aren't doing anything with the head bearings).

My feeling is that the belts were so slack that there causing the pulleys to bind - maybe down to a slight imbalance in length between the two belts?.

slack belts just susally slip

 

[Barking Mat]

Not had anything constructive to add to this thread as seems odd it stalls when not under load.

No idea.

If changing the motor and tightening the belts works, then at least you've found a solution.

All very curious.