This is a modification of Mr. Baddeley's R2-D2 Dome Motor Bracket to allow for a Pololu xxxxx and includes mount holes for the included Stamped Aluminum L-Bracket Pair for 37D mm Metal Gearmotors.
Pololu 30:1 Metal Gearmotor 37Dx68L mm with 64 CPR Encoder:
Pololu Stamped Aluminum L-Bracket Pair for 37D mm Metal Gearmotors (may already be included with the motor):
In simulating the motor in Fusion 360, it appears that the Pololu is much shorter than the original motor used by Mr. Baddeley. This modification to the Motor Brackets makes them taller, to bring the Pololu motor to the proper height, while keeping the original mount point for the slip ring holder where it should be.
Mr. Baddeley's latest designs can be found here:
I'll include pictures once printed, it's in the print queue for now.