Torque and speed

In stepconfig which setting increase or decrease torque on a stepper motor.
Which control speed.

I have my set up and parallel port card working and the motors move.
I cannot seem to get good torque and speed at the same time.I did
at one setting have very good torque and could lift the 10 lb Z axis. The
speed was very slow. When I ran test this axis the movement was about 1 "
and the test was set to move 15" ??. I am getting close to having a working
machine. All of the help from this forum has gotten me this far . Thanks

Thank You

Stepper motors have their maximum torque at zero speed (the "hold torque"), and lose torque with speed. This is not something you can set, but a physical property of steppers.

A higher voltage power supply will help you get more torque at higher speeds: the higher the voltage, the faster the motor's inductance is overcome, and the higher the current that can be "pushed" into the motor at higher speeds.

When it comes to stepconfig, I'm guessing that there is an acceleration setting somewhere. This is related to motor torque, and you need to set this setting low enough that the trajectory planner doesn't try to force the motor to accelerate faster than its torque allows.

You might want to look here...

www.geckodrive.com/support/step-motor-basics.html

After you find your max acceleration and velocity by testing be sure to back off those settings for safety.

Rick G