Some of it has to do with the decked vs deckless cabs… a 1:1 example a lot of people can get up close and see is the two engines at Tweetsie… #12 has a deckless cab, so the fireman pretty much works from the tender deck, which is wider (longer?) to accomodate him than on a decked cab… and it can be a step UP into the cab (on either side of the boiler.) #190 is a cab with a deck, where the fireman stands on the cab floor and reaches into the tender with the scoop … in this case the floor is generally level between the engine and the tender across the deckplate. BUT There are also two styles of cab. With one, the cab walls come all the way down to the floor at deck level, and there is no step up anywhere in the cab. The other, the sides of the cab are higher than the deck, and there’s generally a “step” on each side of the boiler that the seatbox sits on, and you step UP before sitting down… and the floor is a foot or more lower than what appears to be the bottom of the cab from the outside… meaning that from the outside of the engine, the cab deck can look a great deal higher than it actually is, and way above the deck. In this photo, note the difference between the apparent bottom of the cab (white stripe) and the actual deck height (top of the steps, top of the tender frame.)
(http://naphotos.nerail.org/showpic/?photo=2008102320092031827.jpg)
That’s the size of the step up from the deck to the side floors where the seat boxes are. If the engine deck were that high, you WOULD have to stand in the tender to fire, and it’d be a long reach! This photo shows the height difference from the inside of the cab…
(http://naphotos.nerail.org/showpic/?200707292330545821.jpg)
On the other hand this engine:
(http://naphotos.nerail.org/showpic/?2004050720245822969.jpg)
Has a deck that’s the same height all the way across the floor … and the white stripe at the bottom of the cab matches both the one level floor and the tender deck. Easier? Matthew (OV)