As part of this rebuild, I need to replace the motor. It is a 90v dc treadmill motor. I spent a
significant period of time building and rebuild (3 times) the dc controller. It works like a charm now. Super easy controls, very accurate speed control, voltage and amperage displays, as well as rpm display. But the motor is pulling 30amps with neglable and questionable torque. Mark Silva (from the ‘other’ place) gave me a great deal of help to get where I am, including designing and building me a custom controller circuit.
Ive been looking around for a 90v DC motor around 1-1.5hp but notta comes up, ever...
I may have to resort to an eBay motor.
For those here that are savvy with this sort of thing, what do you think of
this? Edit: many times during this journey I have considered junking the whole system and going to a VFD. I do have an untested 1hp 3ph motor, I think 230v. But, I like this system now, I spent quite a bit of money on it, it works, so I think for the time being I will stick with DC. Even if it is getting harder and more expensive to find motors. I'd like to hope that getting a proper tfec motor will last longer than the more readily available treadmill motors...