citizen kane
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This might work, not sure how the Bantam motor is wired though.
I run my cold saw via a step up transformer and VFD.
My Pedrazzoli Mec Brown 75 has a 2 speed 3 phase 440v motor wired like this
View attachment 101044
As you can see, both the star and delta points are already available but both are designed to run from 440v. When low is selected T1, T2 and T3 are the phases and all the delta point are linked together, in high the delta points are wired in.
I used a 1kva step-up transformer and a 440v VFD
View attachment 101045
You can then use the 2 speed switch as normal or I rewired mine so that the switch now talks to the VFD and selects from 2 speeds that I can control via the VFD output frequency.
View attachment 101046