So, we are also wondering which type of fisher price to use, the 0673 or the 9015.
The 0673 is the more powerful motor, and according to AM when you put it on an AM planetary it gives you 5500 rpm (
http://www.andymark.com/product-p/am-0822.htm), which is close to the CIM free speed of 5310 (according to the motor data from the KOP website).
But, on our robots we used the 9015 with the old version of the AM planetary (the blue/red one), which worked fine, and on AM's page about the new gearbox by itself (
http://www.andymark.com/amplanetary-p/am-0002.htm), it lists the 9015 as the motor input that fits. However, according to AM's page with the AM planetary with 9015 motor pre-installed (
http://www.andymark.com/product-p/am-0347.htm), the speed of that is 3200 rpm, nowhere close to the free speed of the CIM.
I'm very confused.