Search found 2743 matches

by Fender
Mon Sep 30, 2019 3:37 pm
Forum: Live Steam
Topic: 730 Old Boiler Dissection
Replies: 75
Views: 18877

Re: 730 Old Boiler Dissection

One thing that struck me about this boiler design is that the builder looks to have built the crown sheet flat on top, with very sharp radius corners. My two boilers, a code boiler in 1950, the other, a riveted boiler from early 1900’s both have round crown sheets - no flat top surfaces, and very s...
by Fender
Sat Sep 28, 2019 9:04 pm
Forum: Live Steam
Topic: 730 Old Boiler Dissection
Replies: 75
Views: 18877

Re: 730 Old Boiler Dissection

As far as condemning limits, I seem to remember that a loss of 40% of the original thickness indicates that replacement is warranted. I suppose you’d need to consider the original factor of safety too. Maybe Marty can correct me on this?
by Fender
Sat Sep 28, 2019 7:17 pm
Forum: Live Steam
Topic: 730 Old Boiler Dissection
Replies: 75
Views: 18877

Re: 730 Old Boiler Dissection

Carl, The tester I bought came with “testing standard”, which is a coin-shaped piece of steel of known thickness (I believe it is 4 mm). In operation, you adjust the device so that it registers 4 mm on the display when using the tester on the standard. The way the tester works is that it measures th...
by Fender
Fri Sep 27, 2019 9:49 am
Forum: Live Steam
Topic: 730 Old Boiler Dissection
Replies: 75
Views: 18877

Re: 730 Old Boiler Dissection

The thickness of the crown sheet may be unseen, but is not difficult to monitor. An ultrasonic thickness tester is not expensive, and can be used to identify problems that are not revealed by a hydrotest. (This would be done in addition to, not instead of, other inspections.)
by Fender
Wed Sep 25, 2019 2:17 pm
Forum: Live Steam
Topic: 7" schedule 40 tube
Replies: 19
Views: 5870

Re: 7" schedule 40 tube

I’ve contacted Tioga, and they do currently have this pipe (7.625 o.d. schedule 40 SA106 B) in stock. It runs about $52/foot, with a $250 minimum order. There is also a cutting charge and freight from PA to destination.
by Fender
Wed Sep 25, 2019 12:58 pm
Forum: Live Steam
Topic: Nelson's tube expander
Replies: 8
Views: 2583

Re: Nelson's tube expander

Another situation where this type expander can be used to advantage is in a short firebox, where there isn’t much room between the tube sheet and the rear of the firebox. A conventional tube roller uses a tapered mandrel that sticks out several inches before the tube is expanded. On a small firebox,...
by Fender
Tue Sep 24, 2019 10:34 am
Forum: Live Steam
Topic: Nelson's tube expander
Replies: 8
Views: 2583

Re: Nelson's tube expander

In some fireboxes where there isn’t much space around the tubes due to the side sheets or crown sheet being close to the tubes, this may be the only style expander that will fit. One caution is to avoid expanding the tube too “deeply” where there is no tube sheet behind it, or the tube will bulge, o...
by Fender
Mon Sep 23, 2019 12:36 pm
Forum: Live Steam
Topic: Uintah #20 0-6-2t
Replies: 15
Views: 5212

Re: Uintah #20 0-6-2t

I remember reading about when Uintah was ordering locomotives from Baldwin, they specified the maximum grade for the line as being 7%. This was needed because the crown sheet was sloped to match the grade. The Baldwin designers concluded that this had to be a mistake, and requested clarification. It...
by Fender
Fri Sep 20, 2019 9:53 pm
Forum: Live Steam
Topic: 7" schedule 40 tube
Replies: 19
Views: 5870

Re: 7" schedule 40 tube

No, steamingdon indicated that the 7” pipe may be obtainable from Tioga, who are in Philadelphia. Seven-inch pipe is 7.625” outside diameter. DOM tubing from Speedy metals is 7.50” o.d. and does not have the same certification (SA106 B) as the pipe. Which is not to say that a boiler cannot be built ...
by Fender
Fri Sep 20, 2019 9:41 pm
Forum: Live Steam
Topic: Uintah #20 0-6-2t
Replies: 15
Views: 5212

Re: Uintah #20 0-6-2t

The steamlocomotive.com site also listed Degolyer as a reference. I believe there were only two of these built, both in 1905.
by Fender
Thu Sep 19, 2019 5:40 pm
Forum: Live Steam
Topic: Uintah #20 0-6-2t
Replies: 15
Views: 5212

Re: Uintah #20 0-6-2t

The website steamlocomotive.com is a good starting point for these engines. It has driver diameter (34”), driver wheelbase (7.25’), cylinder bore & stroke (13” x 18”) and other details.
by Fender
Thu Sep 19, 2019 12:49 pm
Forum: Live Steam
Topic: 7" schedule 40 tube
Replies: 19
Views: 5870

Re: 7" schedule 40 tube

I have sent an email to Southland requesting pricing and availability of this pipe, since they are in Alabama, which is not to far from me. Tioga is in Philadelphia, I believe.
The only other option I have found is 7.5” DOM tubing from Speedy Metals.