Motor mounting face to centre of output shaft approx 32mm.
4 X 41mm pcd holes around output shaft.
3 X 41mm PCD 4mm holes for mounting on motor.
Unused worm drive is 30.5mm long and has a diameter of 14mm.
Internal diameter is 1/4" with pin.
Perfect teeth on gearwheels.
www.pbase.com/brixton_morris/electric_motors