On 2010-12-17, Lewis Hartswick wrote:
Ignoramus6780 wrote:

2) In back gear, forward means reverse and reverse means forward, and
I need to find a way to fix that. Right now rigid tapping in back gear
is ridiculous: The spindle runs CCW and goes down, then reverses and
goes up while spinning CW. I, obviously, need the opposite, unless I
use a left handed tap.

On our Bridgeports, the direction of rotation is not linked
to the mechanical, IN or OUT of back gear. so you can always
run the spindle in any direction regardless of "speed range".
I guess the power downfeed would be a problem though. :-)
...lew...

On Series II Interact 2, back gear reverses the rotation.

This would not be a problem, ordinarily, as I could command the mill
to run "in reverse" when drilling, milling etc and it would be
great. However, when rigid tapping, the control wants to run the
spindle "forward", which in back gear actually means reverse. This is
the problem with rigid tapping.

i