Bridgeport J Step Pulley Spindle Motor

[Gavin BellParticipant @gavinbell14486]

Hi,

I'm nearing completion of mechanical restoration of an old J with stepped pulley. It has the very old original table feed motor.

My Harrison M300 is powered by a Drives Direct D type step-up 240 to 415V inverter and I have wired so that all the original lathe controls and switches are ultilised.

Of course, now I realise I probably have to shell out another £500 for another inverter to run the Spindle motor on the Bridgeport (2 speed with reverse – 5 switch positions) as I don't believe it to be dual voltage. The feed motor is dual voltage so can be powered by a simple inverter for £100. (I must say, given the age and weight of the table feed motor, I'm likely to change that to a modern unit at some time….it must be bending the table…)

I've searched and read dozens of threads on similar topic but am left looking for a financially less hurtful solution, which may come from :

1. replace spindle motor with a dual voltage item that can run 240v 3 phase and use a low cost inverter
2. use a rotary converter and power the whole machine with that, as if hooked into a mains 3 phase supply
3. Try something like a Clarke static converter

My preference is probably 1.

I don't mind stripping a motor to extend the shaft if required if a suitable motor type could be identified.

Thanks in advance for any pointers

Regards

Gavin

[Gavin BellParticipant @gavinbell14486]

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