Search found 470 matches

by Builder01
Sat Nov 10, 2018 3:23 pm
Forum: Live Steam
Topic: Weight Distribution Question on a Live Steam Locomotive
Replies: 10
Views: 553

Re: Weight Distribution Question on a Live Steam Locomotive

So the reason for the shot has been your bad experience. Interesting.
by Builder01
Sat Nov 10, 2018 11:50 am
Forum: Live Steam
Topic: Weight Distribution Question on a Live Steam Locomotive
Replies: 10
Views: 553

Re: Weight Distribution Question on a Live Steam Locomotive

David Powell wrote:
Sat Nov 10, 2018 11:15 am
Traction engines are more fun and do not need rails. regards David Powell
Why the shot?
by Builder01
Fri Nov 09, 2018 1:55 pm
Forum: Live Steam
Topic: Pump
Replies: 42
Views: 2310

Re: Pump

Kimball McGinley wrote:
Fri Nov 09, 2018 1:29 pm
Seems like the rear tube sheet shot forward, carrying the tubes and flues with it?
Why would the rear tube sheet go forward during a failure?

David
by Builder01
Thu Nov 08, 2018 7:46 pm
Forum: Live Steam
Topic: Pump
Replies: 42
Views: 2310

Re: Pump

Bill, is that your loco? You just would not listen!

David
by Builder01
Thu Nov 08, 2018 9:38 am
Forum: Live Steam
Topic: Pump
Replies: 42
Views: 2310

Re: Pump

Steve Bratina wrote:
Thu Nov 08, 2018 9:28 am
Don't we compress water to do a hydrostatic test?
I think the elasticity you see on a pressure gauge as you "pump up" a boiler during a hyrdo test, is probably due to the metal of the boiler moving slightly, more than the water actually compressing. Just a guess.

David
by Builder01
Thu Nov 08, 2018 4:56 am
Forum: Live Steam
Topic: Small blowdown valve?
Replies: 15
Views: 915

Re: Small blowdown valve?

Greg_Lewis wrote:
Wed Nov 07, 2018 10:32 pm
Looking at Jack's and David's, it seems that blowdown's don't have to be quick-opening. Yes?
Correct!
David
by Builder01
Mon Nov 05, 2018 1:55 pm
Forum: Live Steam
Topic: Small blowdown valve?
Replies: 15
Views: 915

Re: Small blowdown valve?

Matt, a ball valve would probably work just fine, but, you need one rated for steam temp. Also, it must be of a short enough profile to fit between the connecting rod and the frame. It also needs to have the same thread as the bushing in the boiler. An adapter would only make it longer. Maybe you co...
by Builder01
Mon Nov 05, 2018 12:31 pm
Forum: Live Steam
Topic: Small blowdown valve?
Replies: 15
Views: 915

Re: Small blowdown valve?

By the way Dianne, you can see the thread relief on the part that screws into the valve body. This may help to answer your other question about threading up to a shoulder.

David
by Builder01
Mon Nov 05, 2018 12:17 pm
Forum: Live Steam
Topic: Small blowdown valve?
Replies: 15
Views: 915

Re: Small blowdown valve?

Here's the drawing and photos of the blowdown valve I made for my loco. I made the body from hex so I could make sure it was driven into the bushing on the boiler tightly. The position for the discharge pipe was marked after the body was screwed into the bushing. Then removed, and tapped for the dis...
by Builder01
Sun Nov 04, 2018 4:38 pm
Forum: Live Steam
Topic: Threading to a shoulder?
Replies: 15
Views: 1022

Re: Threading to a shoulder?

They look fine. Keep us posted if they ultimately do what you need (or not!).

David
by Builder01
Sat Nov 03, 2018 8:51 pm
Forum: Live Steam
Topic: Pre heating boiler water
Replies: 38
Views: 1786

Re: Pre heating boiler water

I always notch up, especially going down grade or on the flat. Full gear is for starting or going up grade. When initially timing my valve gear, it was easy to see what notching up does. I am surprised more folks don't do it.

David
by Builder01
Sat Nov 03, 2018 8:39 pm
Forum: Live Steam
Topic: Threading to a shoulder?
Replies: 15
Views: 1022

Re: Threading to a shoulder?

What about dropping a parting tool in between the thread and the shoulder after threading? (or before, for that matter) I have very little wall thickness at that point but will try that tomorrow. I DID use a countersink in the female thread. I need about 0.100" more engagement. The groove made by a...