Search found 2149 matches

by Dick_Morris
Tue Nov 06, 2018 6:01 pm
Forum: Live Steam
Topic: Small blowdown valve?
Replies: 15
Views: 1025

Re: Small blowdown valve?

Thanks. The little ridges on the hand wheel are a nice touch as is the square drive.
by Dick_Morris
Tue Nov 06, 2018 5:58 pm
Forum: Live Steam
Topic: Disney American
Replies: 390
Views: 63905

Re: Disney American

Thanks! That gives me some ideas on how to improve on the blowdown on my CP-173.
by Dick_Morris
Mon Nov 05, 2018 9:41 pm
Forum: Live Steam
Topic: Small blowdown valve?
Replies: 15
Views: 1025

Re: Small blowdown valve?

I think I have some scribbles of the valve if you are interested. Yes, please. I have a 1/8" NPT ball valve buried under my RRSC CP-173. A street L threads into the throat sheet, the valve is pointed downward, and another L and a nipple direct the steam to the side. To actuate it I use a length of ...
by Dick_Morris
Fri Oct 26, 2018 8:21 pm
Forum: Live Steam
Topic: Using a steam indicator
Replies: 37
Views: 2449

Re: Using a steam indicator

I haven't worked with electronic transducers, but my impression is that they take little volume and movement of the fluid to make them register, compared to an indicator which uses a piston which has to be displaced. If that's true, a small tube would work just fine. With minimal volume and flow, th...
by Dick_Morris
Wed Oct 24, 2018 9:57 pm
Forum: Live Steam
Topic: Who offers window frame castings?
Replies: 10
Views: 834

Re: Who offers window frame castings?

I have eight @ 3-1/8" x 5" die cast frames with no proposed use.

I also have a box full of wooden doll house windows for projects that I may never finish. They simulate double hung for 2-9/16" x 5-1/16" and 2" x 4" opening. I believe these are standard sizes for doll house windows.
by Dick_Morris
Wed Oct 24, 2018 9:26 pm
Forum: Live Steam
Topic: Using a steam indicator
Replies: 37
Views: 2449

Re: Using a steam indicator

A good illustration of how the cut-off is change is the suite of valve gear simulations created by the late Charlie Dokstader. Your engine probably only allows it to be changed by mechanical modifications, but many engines allow it to be adjusted on the fly. His software allows simulations of a numb...
by Dick_Morris
Tue Oct 23, 2018 3:48 pm
Forum: Live Steam
Topic: Using a steam indicator
Replies: 37
Views: 2449

Re: Using a steam indicator

you can't have steam pressure at 0
Although the reasons you give are true, don't forget that many compound marine and stationary engines exhaust into a vacuum induced by the condenser and air pump.
by Dick_Morris
Tue Oct 23, 2018 4:51 am
Forum: Live Steam
Topic: Andrews Truck
Replies: 6
Views: 861

Re: Andrews Truck

The Class TW truck listed here is 5'6" WB, but I can't tell what size the journals are. I've got drawings from them a couple of times and they are prompt and not too expensive. https://www.nwhs.org/archivesdb/selectd ... rs&id=1779
by Dick_Morris
Sat Oct 20, 2018 5:10 pm
Forum: Live Steam
Topic: Using a steam indicator
Replies: 37
Views: 2449

Re: Using a steam indicator

The steam inlet is before the valve, the indicator must measure the pressure on the piston. If you aren't going to fit cylinder drains you can make the holes and use plugs. Or get a bigger engine. :)
by Dick_Morris
Sat Oct 20, 2018 5:07 pm
Forum: Live Steam
Topic: Using a steam indicator
Replies: 37
Views: 2449

Re: Using a steam indicator

Go to archive.org and enter "steam indicator" as the search terms. There are a number of digital copies of old books available there. To replicate the diagrams in the books you should use a linear sensor on the crosshead instead of a rotary sensor. I agree that the volume between the piston and sens...
by Dick_Morris
Sun Oct 14, 2018 10:06 pm
Forum: Live Steam
Topic: Main crank pin on different axle then Eccentric on
Replies: 7
Views: 964

Re: Main crank pin on different axle then Eccentric on

It's a goal to have the minimum of slop in the valve gear. It's also good to have a bit of slop in the rods and so that the locomotive won't bind from the wheels moving up down different amounts due to track irregularities. Your proposal would probably work, but would wreck havoc with the valve even...
by Dick_Morris
Thu Oct 04, 2018 3:38 pm
Forum: Live Steam
Topic: Candice Bergen remembers Disney's railroad
Replies: 7
Views: 1298

Re: Candice Bergen remembers Disney's railroad

I'm pretty sure his railroad was featured in an episode of Disneyland. There was also a Donald Duck cartoon that was obviously based on his home RR.