Longs 3 axis CNC kits - are they suitable for Bridgeport Series 1 conversion?

[routerdriver]

I don't know what torque you need to move the Bridgeport but

looking at the kit you linked to

the motors 8mH inductance is too high when using the 60V power supply supplied

you either need to have a motor inductance about 3.5mH to use the 60V supply or
stepper drivers that will work with a 90V power supply if you use the 8mH motors

I would use another breakout board that does not have opto-isolators on the outputs connected to the stepper drivers

connecting the KITs BOB to stepper drivers with opto-isolated inputs will degrade the sharp edges of the step pulses

John

I am obliged for this answer as I have a Longs 3 axis kit for my tiny hobby router.I was hugely pleased just to get it moving and anticipate a series of upgrades.I liked the idea of opto-isolators as it appeared to make it less likely that the magic smoke would escape;I had no idea there was a performance penalty.Can anybody suggest what might be an improvement?I am currently using on old Dell with a parallel port and wouldn't mind a more modern type of connection.I hope the OP won't mind me asking as I believe he might also benefit from an answer.