To add to above i have always had electrical supply problems and now in process of changing the motor as first port of call. Original non dual voltage and always had doubts on it.
Cant get a twin pulley 28 bore 100m until Thursday and 4 extra days downtime. Now putting motor and backing stand off plate back on, found out and whipped my pulley off the 1hp Brook Crompton motor on ML7 i used to use then bore it out 28mm then fit on new motor to bore out and slot lathes original fitment.

Only then will i know whether the larger 100 case will fit in, originals on M300 a 90 case with 24 shaft.

I will be the only person that has ran same machine with a 5.5hp Rotary convertor 400v, 1ph 35Amp draw 240V 7.5kw digital inverters 400v and run 10A 220V 3ph for comparison as a VFD.
No interest in speed changes got a gearbox for that, its more to do with a question i have constantly asked for the last 8 years regarding the torque loss running 220v, we shall find out.