Search found 621 matches

by Builder01
Sat Jul 25, 2020 6:29 pm
Forum: Live Steam
Topic: Piston rings
Replies: 58
Views: 1989

Re: Piston rings

Now you have a third version which is clearly different from the animation and different from the drawing I posted. In the animation, the slide valve is over 5 ports and the cylinder has 4 ports. In the drawing I posted, the slide valve is over 3 ports and the cylinder has 2 ports. This is the least...
by Builder01
Sat Jul 25, 2020 1:05 pm
Forum: Live Steam
Topic: Piston rings
Replies: 58
Views: 1989

Re: Piston rings

Here's the link: (this should have been posted to begin with) http://animatedsoftware.com/pumpglos/duplexpu.htm This slide valve and cylinder have much more going on than in the "traditional" type of steam engine. The drawing I posted is nothing like the one in the animation, even though it was iden...
by Builder01
Fri Jul 24, 2020 8:59 pm
Forum: Live Steam
Topic: Piston rings
Replies: 58
Views: 1989

Re: Piston rings

There is no hole that the piston rings cover. The steam is admitted to the cylinder through the small holes at each extreme end of the cylinder from the steam chest. The piston rings never cover these holes. These holes at the ends of the cylinders are also the exhaust ports, as this a double acting...
by Builder01
Fri Jul 24, 2020 6:55 pm
Forum: Live Steam
Topic: Piston rings
Replies: 58
Views: 1989

Re: Piston rings

Is this like the steam side of your pump? I see no ports that are allowed to be covered by the piston at any point in the cylinder bore. This is a Breisch duplex steam pump.
duplex-steam-pump-plans-11-1-11-1965_1_4cb646f6190109873c2201b0d97c6920.jpg
duplex-steam-pump-plans-11-1-11-1965_1_4cb646f6190109873c2201b0d97c6920.jpg (17.64 KiB) Viewed 193 times
by Builder01
Fri Jul 24, 2020 6:37 pm
Forum: Live Steam
Topic: Piston rings
Replies: 58
Views: 1989

Re: Piston rings

Since you have no drawing, when you say the Teflon ring is backed by a Viton ring, do you mean under the Teflon ring, or side by side to the Teflon ring. Is the Teflon ring circular in cross section, or square? Or, are the two rings in separate grooves? A drawing would be really helpful.
by Builder01
Fri Jul 24, 2020 6:27 pm
Forum: Live Steam
Topic: Piston rings
Replies: 58
Views: 1989

Re: Piston rings

Vitron?? You have used this word several times, do you mean Viton??
by Builder01
Fri Jul 24, 2020 3:28 pm
Forum: Live Steam
Topic: Piston rings
Replies: 58
Views: 1989

Re: Piston rings

If you could post an image of perhaps a cross section of your pump, that would be helpful for everyone. You don't have to post all the drawings, just the ones that might make it more clear for those of us trying to help you figure out what is going on. I assume you are building to a published design?
by Builder01
Fri Jul 24, 2020 11:23 am
Forum: Live Steam
Topic: Piston rings
Replies: 58
Views: 1989

Re: Piston rings

The design of a duplex pump calls for the piston seal (0 ring) to run past the exhaust port which is a 16th hole about a quarter inch in from the end of the piston stroke. The piston seal runs past the exhaust port? If that is true, now the exhaust port is connected to the other side of the piston....
by Builder01
Wed Jul 22, 2020 5:05 am
Forum: Live Steam
Topic: Plate Grates
Replies: 6
Views: 553

Re: Plate Grates

Ken, I know you have seen my grate. The bars are tapered in cross section and are stainless steel. It is a welded assembly. This material is available from Blackgates Engineering. You can cut it up however you want. Might be just what you need if you want a bar grate.
DSCN1464.JPG
by Builder01
Wed Jul 01, 2020 3:39 pm
Forum: Live Steam
Topic: Glass tube for water glass
Replies: 6
Views: 1056

Re: Glass tube for water glass

You can get 8mm red line gauge glass here:

http://www.livesteammodels.co.uk/shop/i ... ct_id=2090
by Builder01
Mon Jun 29, 2020 12:58 pm
Forum: Live Steam
Topic: automatic cylinder cocks
Replies: 24
Views: 2217

Re: automatic cylinder cocks

I can see the video now. Most auto drains I've seen usually weep a little even when closed. Even mechanical ones can too. I prefer mechanical ones, as I get to decide when they are open or closed.
by Builder01
Mon Jun 29, 2020 11:18 am
Forum: Live Steam
Topic: automatic cylinder cocks
Replies: 24
Views: 2217

Re: automatic cylinder cocks

The video is marked private. I cannot view it. Is this the same for others?