[scuba_sm]

I have had limited expierence with Three-pole motors.... I have played with a few DC stepper motors though, and depending on the type, they can have three contacts, could this be what you're using? There is an excellent book out called "The Robot Builder's Bonanza" and not only does it tell you how to wire up various types of motors, including that type, but it has a wealth of other information on various subjects, including drivetrain design, programming, etc. I think it well worth the investment.