Originally Posted by WindupGuy:
I believe that a 1511 has a square male shaft, so you could use the proper size of clock key to wind it. ...
right you are, James. the 1511 has a 1/8" square shaft. i don't have an original Lionel key, but i have 2-3 keys that will fit. same key as both the early Girard cast iron locomotives and much later Unique Arts motors. not 100% sure about this, but i would imagine Lionel clockwork motors were all inherited from Ives.