Just a quick note: in real life there are steam locos with blind wheels too.
Our ex- standard South African Harbour shunting steam loco classes S, S1 and S2 were 0-8-0's and their two center wheels were blind.
Our ex- standard South African Harbour shunting steam loco classes S, S1 and S2 were 0-8-0's and their two center wheels were blind.