Search found 639 matches

by DianneB
Tue Oct 09, 2018 12:11 pm
Forum: Live Steam
Topic: Union nuts & cones?
Replies: 15
Views: 1156

Re: Union nuts & cones?

Builder01 wrote:
Tue Oct 09, 2018 11:03 am
As it turns out, I have a "how to" page on my website dedicated to making union cones and nuts.
EXCELLENT! Exactly what I was looking for! Now bookmarked :mrgreen:
by DianneB
Tue Oct 09, 2018 9:38 am
Forum: Live Steam
Topic: Union nuts & cones?
Replies: 15
Views: 1156

Union nuts & cones?

I haven't been able to find drawings for making small steam unions for various size tubes and pipes and have some to make over the winter. I looked on the IBLS web site and didn't see anything. Has anyone seen drawings posted? It looks like a simple task but a few things jump out at me: Drilling & t...
by DianneB
Sun Oct 07, 2018 7:18 am
Forum: Live Steam
Topic: Tap/Drill Chart
Replies: 11
Views: 865

Tap/Drill Chart

Does anybody have a chart with tap, drill, and thread data that covers most commonly used model screw and pipe sizes? Where did you get it?

I have various charts hanging in the shop but still run into screws or pipes that aren't on my charts, some British and some oddball!
by DianneB
Thu Oct 04, 2018 10:14 pm
Forum: Live Steam
Topic: dual crosshead pump plumbing?
Replies: 8
Views: 735

Re: dual crosshead pump plumbing?

Talk to Jesse Banning (http://www.banninglocomotiveworks.com/home.html) He has made some changes that work wonders.
by DianneB
Sat Sep 29, 2018 7:31 am
Forum: Live Steam
Topic: Unusual boiler design
Replies: 6
Views: 918

Re: Unusual boiler design

Kimball McGinley wrote:
Fri Sep 28, 2018 2:04 pm
Why do the plates extend out like that? Reminds me of fins on a radiator; can you trim them back closer to the barrel diameter?
I could but then it wouldn't look like Trevithick's 1803 locomotive
by DianneB
Fri Sep 28, 2018 11:42 am
Forum: Live Steam
Topic: Recommendations for a hand pump?
Replies: 11
Views: 1025

Re: Recommendations for a hand pump?

A hand pump is definitely a good idea. I have seen axle pumps fail and (unless you have a filter in your injector line) injectors sometimes pick up a bit of dirt or develop an air leak in the suction line. If you test the hand pump at the beginning of the season, its chance of failing is minuscule. ...
by DianneB
Fri Sep 28, 2018 6:38 am
Forum: Live Steam
Topic: Unusual boiler design
Replies: 6
Views: 918

Unusual boiler design

A few years ago I started building a model of Trevithick's 1803 engine in 1" scale. I had some 4" copper pipe and 1/4" copper sheet so I used these for the boiler barrel and end plates. Boiler 1.jpg Needless to say, it passed hydrostatic tests easily but when tested for steam capacity, it was sadly ...
by DianneB
Wed Sep 26, 2018 8:12 pm
Forum: Live Steam
Topic: Printer patterns
Replies: 7
Views: 811

Re: Printer patterns

I did a group of 9 castings a couple of years ago made from 3D prints. Using investment casting, "lost wax", they can be made directly from the 3D print without moulding - it lowers the cost considerably if you don't mind printing the number of parts you need.
by DianneB
Mon Sep 24, 2018 5:39 am
Forum: Live Steam
Topic: L.E. American & Feedwater?
Replies: 22
Views: 1679

Re: L.E. American & Feedwater?

It is recommended that 2 x o.d. of ball is used to provide reasonable flow conditions around the ball. I too think 2x ball diameter is excessive. At that size, horizontal movement of the ball can become a problem. The criteria I used to verify the existing check valve was to determine the cross-sec...
by DianneB
Sun Sep 23, 2018 8:17 am
Forum: Live Steam
Topic: L.E. American & Feedwater?
Replies: 22
Views: 1679

Re: L.E. American & Feedwater?

I always look forward to your advice Bill! a hard seat with the ball lapped to fit the seat and a lift of no more than 10% of the ball diameter is all that you need. a good way to do this is to glue a ball to a piece of brass tubing and use some lapping compound to mate the two together 10% is the n...
by DianneB
Sun Sep 23, 2018 5:31 am
Forum: Live Steam
Topic: L.E. American & Feedwater?
Replies: 22
Views: 1679

Re: L.E. American & Feedwater?

Thanks for the comment Harold. I have considered that possibility. RET: There is a boiler check in the discharge line so I presume it would seal first because it has a limited ball lift. There are two crosshead pumps operating 90 degrees apart and all checks are vertical. I had considered adding an ...
by DianneB
Sat Sep 22, 2018 7:54 am
Forum: Live Steam
Topic: L.E. American & Feedwater?
Replies: 22
Views: 1679

Re: L.E. American & Feedwater?

I took detailed measurements of the existing pumps and think the basic problem lies with the check valves. The checks use a 0.1875 SS ball in a 0.240 dia hole. They have a square seat opening into a 0.156 passages. But there is nothing to limit the ball from following the flow - total lift 0.229 - a...