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Little Engines American Boiler

Posted: Sun Apr 14, 2019 8:20 am
by Fender
Here are some photos of a steel boiler I am building for a friend. It has ten type K copper tubes 5/8” od and about 14” long. I did most of the fabrication, and had it TIG welded. It’s the first boiler I have made.

Re: Little Engines American Boiler

Posted: Sun Apr 14, 2019 1:04 pm
by NP317
Nice! Better welding than I could do.
~RN

Re: Little Engines American Boiler

Posted: Sun Apr 14, 2019 3:30 pm
by Fender
NP317 wrote:
Sun Apr 14, 2019 1:04 pm
Nice! Better welding than I could do.
~RN
Me too! So I hired a pro to do the welding!

Re: Little Engines American Boiler

Posted: Sun Apr 14, 2019 3:35 pm
by Fender
Here’s the other end, and the firebox.

Re: Little Engines American Boiler

Posted: Mon Apr 15, 2019 2:42 pm
by Fender
Here’s the setup for reaming the front tube sheet for the copper tubes. If the boiler was mich longer I would have needed s taller drill press! The firebox needed to be reamed before it was installed in the boiler, but after all the welding was done on the firebox itself. Rolling the tubes on the front tubesheet was easy, but was a real challenge on the rear, because of the small firebox.

Re: Little Engines American Boiler

Posted: Tue Apr 16, 2019 10:07 am
by Jacob's dad
It looks great Dan! We're looking forward to see the engine on the tracks!

Re: Little Engines American Boiler

Posted: Tue Apr 16, 2019 11:16 am
by gwrdriver
Interesting project, what grate area did you end up with?

Re: Little Engines American Boiler

Posted: Tue Apr 16, 2019 12:29 pm
by Fender
Hi,
The grates ended up being about 3.5”W X 4.9”L.
A bit smaller than with the copper boiler, but I think it will work fine, with the arch design I copied from Charlie Pipes. Charlie said his American doesn’t steam well without the arch, but he was able to run up the grade at Canton, St. Paul & Pacific with plenty of steam.

Re: Little Engines American Boiler

Posted: Tue Apr 16, 2019 2:55 pm
by gwrdriver
Thanks . . . I like that logo on your shirt.

Re: Little Engines American Boiler

Posted: Tue Apr 16, 2019 5:27 pm
by Fender
Ha! That’s actually Charlie wearing the MSLS shirt!

Re: Little Engines American Boiler

Posted: Wed Apr 17, 2019 7:22 am
by Pontiacguy1
Charlie got himself a shirt made that actually says something like: "Don't tell my wife what I paid for this" or "don't let my wife sell these things for what she thinks I paid for them", something like that. Pretty funny stuff.

Re: Little Engines American Boiler

Posted: Wed Apr 17, 2019 11:12 am
by jessebanning
The boilers we build for the American are all steel. They have 31 - .375" OD seemless tubes. All TIG welded together. The Boiler is 5.5625" OD throughout. There are two flue configuration options, the .375" OD flue (31) or .500" flue (20).

We ran our American for 5 hours straight pulling 5-6 Adults. We burn coal and NEVER had any flues clog up. The boiler makes plenty of steam all day long.