Looks like DCM-104 is a 550 frame Mabuchi motor, similar in case style to the FP and Mabuchi motors we have used in FRC, but with different ratings.
DCM-104: Free speed = 9000 RPM at 6 Volts, Full load current = 1.3 Ampere
See
this link for distributor's data, price is $3.50 each.
Based on the rules at the link Greg posted, it appears that vehicle controllers are standardized and include the batteries and motor controllers. Details of their operation are apparently provided only to each team's teacher/sponsor.
So I guess it will be hard to help Greg figure out how to used the DCM-104 in his daughter's competition unless one of the sponsor/teachers posts some more information.
__________________
Richard Wallace
Mentor since 2011 for FRC 3620 Average Joes (St. Joseph, Michigan)
Mentor 2002-10 for FRC 931 Perpetual Chaos (St. Louis, Missouri)
since 2003
I believe in intuition and inspiration. Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution. It is, strictly speaking, a real factor in scientific research.
(Cosmic Religion : With Other Opinions and Aphorisms (1931) by Albert Einstein, p. 97)