Okay, but what about using my Boss DC servo motors with the Centroid drive?
If you are doing your own installation, and you have the inclination and ability to adapt the old motor cables or make new motor cables, then it may make sense. If you are hiring me to do the installation, you will spend more on the additional labor to adapt to the old motors than you would spend on new motors. Note that if you do keep the old motors, you may need to install new position encoders. Early Boss servo systems often used 250-line (1000-count) encoders. For optimum performance you should use at least 1000-line (4000-count) encoders. Centroid motors come standard with 2000-line (8000-count) encoders. Also, some older motors will have TTL (single-ended) encoders. You need encoders with a differential line driver output (they should have 8 wires).