@harmonyards posted:Phil, you must be talking about the dry pipe, ....when the H10’s were originally built, the throttles were in the smoke box, necessitating the need for the dry pipe to be external,....by the 1920’s these locomotives were already being heavily modified, with throttles moved exterior, thus the dry pipes were moved to the inside of the smoke box these locomotives went through some crazy changes throughout their careers,....longer cabs, different stokers, etc.......it wasn’t just the B&A that moved them, the Central proper was moving them pretty early on,....they didn’t remove them, they’re just moved inside the smoke box ,...
Pat
Thanks Pat, I knew it was something like what you stated