Motor test stand. 4 screws drilled in appropriate distance
into a base plate - done.
and this is how it works. Once adjusted it should serve all
Biller locos.
Another version. The motor block is held by the rear
angular devise - used to hold both sides together - and a self-made
spring supported bolt attached from the front. The completed motor can
be rotated as necessary. Works only with the old rear slanted
clockworks.