Two electrical questions

[®smpr_fi_mac®]

Thanks, folks. That helps.

[TDKPE]

What I'm looking for is an adapter that will convert 110V AC to 90V DC.

I don't know much about DC motors, but that motor requires both armature power at 90VDC, and field power at 50/100VDC.  Sounds like a real DC motor controller is required, but that's about all I know.  I've managed to stay away from DC for pretty much ever, other than once specifying an 8-motor DC drive system for a big portal crane many many moons ago, in the early days of VFD's, as I didn't have enough confidence in them way back then but big DC systems were super common.  But I digress.  

[®smpr_fi_mac®]

Hmmm.

So maybe a pair of adapters? One for 90V and another for either 50V or 100V? If that's so, I'd lean to 100V to lower amperage requirements.

[TDKPE]

Not what you asked, which I don't think I can answer reliably anyway, but that sounds like a lot of work for a 1/4 hp, 56C frame, 1800 rpm motor, which is super common in a single-phase flavor.  Not even a "Z" on the end, so the shaft is standard. Even more common without the C-face, but you may need it. I don't know.

Just sayin'.

[®smpr_fi_mac®]

I do need the C designation but am not wedded to *this* motor. I may just hunt for a proper AC motor.

[Roly]

You can look up all the specs  as this is a Baldor motor #CD3425.    I don't know what you are connecting it to but it has a 5/8" dia shaft, very hefty for a 1/4 hp.
 As others have said trying to convert the AC to DC and probably have a limited speed control for it will all cost more than a 1/4 hp split phase motor.  I think they said it is used in printing and textiles industries.   A very expensive motor.   Roly

[TDKPE]

As others have said trying to convert the AC to DC and probably have a limited speed control for it will all cost more than a 1/4 hp split phase motor.  I think they said it is used in printing and textiles industries.   A very expensive motor.

For that matter, spend the coin on a small VFD and buy or find a small three-phase motor with the same 56C frame.  Small three-phase motors have no value except to hobbyists.

Maybe recover some cost selling the DC motor, but I have no feel whatsoever what the market will bear.

[Stwood_]

Doesn't sound like a good, easy option with that 12V

I'd pick up a cheap 3phase. I have a buzz box I'd give you to convert it.

[®smpr_fi_mac®]

Alright, scored a proper, 120V VAC motor for $40. Game on!

[Stwood_]

Alright, scored a proper, 120V VAC motor for $40.  Game on!

Sweet!!!
Now, that requires a picture of said motor when you receive it!