motor free amps at voltages less than 12

[windtakers]

Here's some rough data. (Obtained with help from Richard.)

We measured free amps for one CIM motor and one FP -9015 motor, as follows:

CIM at 12V: 3 Amperes free
CIM at 6V: 2 Amperes free

9015 at 12V: 1.1 Ampere free
9015 at 6V: 0.4 Ampere free

These tests should be repeated under better controlled conditions, with several motors, some run-in time for each motor, and better instruments. Our instruments were a 0-50 Ampere old-school Simpson ammeter and a Cen-Tech (Fluke 87 knock-off) DMM. Our power supply was a 12V DeWalt drill battery, controlled by the DeWalt drill electronic trigger circuit. Will try to post some pictures later.