August has arrived and with it is a new update on 1385’s boiler as it progresses toward becoming a finished vessel.
The fire door ring has been fitted to the firebox and backhead sheets and will be welded in place. The firemans’ shovel will pass through this opening many, many times feeding the fire that will keep 1385 running.
Looking at the other end of the firebox we can see where the rear tubesheet braces will be installed. Those are the wider-spaced holes below the field of closely spaced 2” tube holes. The braces are necessary because the holes in the tubesheet are above the top of the throat sheet so the braces are welded to the inside of the belly of the boiler. The braces are shaped like an elongated and squished “Z” so they can enter the hole in the tubesheet at a right angle and also lay flat on the boiler shell belly as they are welded in place.
The shot of the top of the boiler shows that just a ‘few’ stays need finish welding. You can also see that the steam dome base has been finished. The holes that do not have stays inserted are going to be some of the flexible stays and are awaiting the installation of the sleeves on the outside of the shell before the bolt itself can be applied and welded in place.
We do not have an anticipated return-to-service date for the 1385 but every weld is one step closer. Stay tuned to this webpage or our official Facebook and Instagram pages to keep up with most up-to-date information on 1385’s progress.
We appreciate the public’s enthusiasm to see the 1385’s progress first-hand; however, the contractor shops where the #1385 work is taking place are not open to the public. Anyone showing up at our contractor’s locations requesting to see the locomotive will be turned away. Please help #1385 return to operation as expeditiously as possible by respecting our contractors’ wishes.
Chicago & North Western #1385’s boiler continues to see steady progress. Since the last update, the boiler has been moved across the Continental Fabricators shop floor and is now on the positioner. With the boiler now on the positioner, it can be rotated to allow workers to put it into the best position for welding and assembly in areas that would otherwise be difficult to access.
C&NW #1385’s boiler on the positioner at Continental Fabricators. The positioner allows the boiler to be rotated. June 11, 2019. Photo courtesy Continental Fabricators.
C&NW #1385 left side wrapper sheet. Continental Fabricators. June 11, 2019. Photo courtesy Continental Fabricators.
C&NW #1385 right side wrapper sheet. Continental Fabricators. June 11, 2019. Photo courtesy Continental Fabricators.
Installation of the crown stays is also in process. Crown stays are the staybolts that connect the wrapper sheets – which wrap around the firebox – to the crown sheet (i.e. the top of the firebox). The crown sheet is directly above the fire and is the hottest part of the firebox.
The crown stays (shown in green) support the crown sheet at the top of the firebox, preventing it from bowing inward from the immense pressures.
Work on Mid-Continent Railway Museum’s Chicago & North Western #1385 locomotive during the month of May has consisted of stay installation, stay installation, and more stay installation. With over 900 staybolts to be applied, this process represents one of the more time-intensive portions of the new boiler production. Each weld must be made with great care and precision to avoid leaks and ensure proper strength when the boiler is under operating pressure.
Continental Fabricator’s Tom G. peered into the belly of the beast on May 29th to take these photos of stay installation progress on the inside of 1385’s firebox.
View of the interior of the 1385’s firebox on the fireman’s side. May 29, 2019. Photo courtesy Continental Fabricators.
View of the interior of the 1385’s firebox looking toward the front of the boiler. May 29, 2019. Photo courtesy Continental Fabricators.
View of the interior of the 1385’s firebox on the engineer’s side. May 29, 2019. Photo courtesy Continental Fabricators.
Tom G. of Continental Fabricators kindly supplied Mid-Continent Railway Museum with this photo of C&NW 1385’s boiler. The photo was taken on April 17, 2019, and shows the boiler barrel in position as it is readied to be joined to the firebox. Work on the boiler is taking place at the Continental Fabricator’s shop in St. Louis, Missouri. When completed, the boiler will be delivered to Wisconsin and be set on the C&NW 1385’s overhauled frame.