How can I speed up travel on this Boxford router? What new stepper motors to get?

[Nicholas Collier]

Do you mean increase the supply voltage to the drivers so that the drivers send a higher voltage to the motors? I assumed that they were regulated internally so that a change in supply voltage does not effect the output voltage.

Here is the data sheet for the drivers
http://pdf.datasheetcatalog.com/data...onics/2666.pdf

Does your idea work because the drive is a constant current drive, which needs to supply a higher voltage the faster the motor turns, because the motor impeadace increases with frequency, so at some point the supply to to motor will reach the supply voltage of the driver and therefore not be able to get any higher. So increasing the driver supply voltage will give more headroom on upper frequency limit?