Also keep in mind you don't want to design for stall torque. Most things don't like to operate at their limits, case in point the CIM motor... it becomes more a electro->thermal energy conversion device as opposed to an electro->mechanical energy conversion device as its torque output approaches stall.
Remember, this heating is nothing to fool around with: A CIM motor at stall eats approximately 133A... since we run CIMs at 12VDC that would make the motor a 1,596watt space heater... thats a more heat than even your biggest plug-in portable space heaters.
I posted the CIM pdf a little while ago, i'm sure you'll find the torque curves and points of interest charts useful:
http://rapidshare.com/files/51500157/CIM.pdf
I also have the big (3") CIM empirical data graphs and tables somewhere....... just have to figure out where I left them
Also, if you are still having trouble understanding torques, I have a physics refrence (ebook) i can direct you to.
Have fun...
-q