I have a HO Class A Climax from Nakamura Seimitsu…
The open frame motor is dead.
its pretty small too, 10mmx28mm with a shaft extending out another 8mm the dia. of the shaft is 2mm
It fits inside the boiler horizontally. there is room in there for a slightly wider motor, but not much, maybe a 12 or 13mm might fit.
I called NWSL in Seatle and they have a possible replacement. But I thought I should ask on here too if there was another known source for motors.
Thanks
Kevin