Hi RAAArtGunner,
The principle is very simple, a brass tube, soldered onto the brushtab.
As the brushtabs of Speed motors are held in position by plastic, it's essential to work quick, in order to avoid overheating the plastic, which in turn would cause the brushes to move out of position, ruining your motor...
I use a pair of roundnose pliers to bend the tab according the radius of the tube used (usually Ø 4mm thin walled brass) and pre- tin both tab and pipe with a 80-100W soldering iron.
I adapted a wooden washpeg to hold the brass tube in position, so I can solder the two together quickly withouh having to resort to using pliers, which would draw heat from the iron.
The pipe in the picture is too long, shorten it prior to soldering it in place.
I use the same washpeg to hold both cooling pipe and motor wire in place to be able to solder the wire in place without the brass pipe falling off again.
Regards, Jan.