Originally Posted by
FaanP
Thus, if I understand correctly I can leave my spur gears as and chop and change my pinions how I feel like?
Unless things have changed recently, module gearing maintains a constant diameter, what has caught me out is the diameter split in mm between the two gears (both pinion and spur) diameters, hence I couldnt use a mugen clutch on a team magic.
http://en.wikipedia.org/wiki/Gear#The_module_system