Re: Is it possible to change the BP motor to eliminate shifting?

Yes, you can use a VFD, to control the speed of the motor. However,
you will lose tons of torque (cutting power) at lower RPM's by not
using the backgear (low gear range). This would render the Bridgeport
nearly useless while using larger diameter cutters at low RPM.

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Keith Clark" <mail@t...> wrote:
>
> Is it possible to change the 2 HP motor on my (Series 1 originally
> Boss controlled) Bridgeport spindle during conversion to control
> spindle speed, to a motor that could have the entire speed range
> needed and thus obviate the need for the gear shift?
>
> Thanks,
> Keith