pic: Kit Transmission Upgrade kit

[sciencenerd]

Originally Posted by ryan_f

do you know if we're allowed to cut off that part protruding from the from of the CIM? (the threaded part that sticks out). I don't see why not since it doesn't really change the characteristics of the motor but i just want to be on the safe side

Originally Posted by FIRST manual 2006: The Robot

<R36> So that every robot’s maximum power level is the same, the motors in the kit may not be modified in any
way, except as follows:
• The mounting brackets and/or output shaft/interface of the motors may be modified to facilitate the physical connection of the motor to the robot and actuated part.
• The gearboxes for the Fisher-Price, and Globe motors are not considered “integral” and may be separated
from the motors. FIRST will not provide replacements for parts that fail due to modification.
• The electrical input leads on the motors may be trimmed to length as necessary.

(bolding added)

The intent of this rule is to make sure "every robot’s maximum power level is the same", and of course not allow any dangerous modification of the motor that may lead to safety concerns. I believe that the bolt that sticks out would fall under the category of "the mounting brackets and/or output shaft/interface of the motors", and thus may be modified. And it certainly does not change the maximum power output and isn't dangerous, so I don't know why it wouldn't be allowed.