Search found 748 matches

by RET
Sun Oct 21, 2018 9:55 am
Forum: Live Steam
Topic: Using a steam indicator
Replies: 10
Views: 411

Re: Using a steam indicator

Hi, To make your steam connection, the easiest way would be to drill a 1/16" hole through the cylinder cover and make your pressure sensor connection there. As a temporary measure, you could epoxy the sensor onto the cover to hold it in place. Try and get the smallest size sensor possible because of...
by RET
Sat Oct 20, 2018 2:50 pm
Forum: Live Steam
Topic: Using a steam indicator
Replies: 10
Views: 411

Re: Using a steam indicator

Hi, Using a superficial Google search, it seems a steam indicator recorded the cylinder pressure vs stroke for at least one complete revolution of the crankshaft. Multiple revolutions should simply repeat the line drawn, provided that the load on the engine, throttle position and boiler pressure are...
by RET
Fri Oct 19, 2018 11:06 pm
Forum: Live Steam
Topic: Forum Board Statistics
Replies: 12
Views: 631

Re: Forum Board Statistics

Hi, This may be slightly off topic, but I feel that it is appropriate. I don't know about the rest of you, but because I'm interested, I check the chaski website and in particular the live steam section at least once a day just to see what is new and under discussion. If I feel that I can contribute...
by RET
Fri Oct 05, 2018 9:21 am
Forum: Live Steam
Topic: dual crosshead pump plumbing?
Replies: 8
Views: 737

Re: dual crosshead pump plumbing?

Hi, Because they are crosshead pumps, the pumping action will be 90 degrees out of phase so each pump is going to need its own inlet and discharge check valve. If they don't, the pumps will still work, but at a much lower efficiency (about 50%). They can be piped together as shown, but only after th...
by RET
Tue Sep 25, 2018 9:16 am
Forum: Lathes
Topic: Rebuild a Heavy 10L or add a small lathe?
Replies: 12
Views: 863

Re: Rebuild a Heavy 10L or add a small lathe?

Hi Dianne, The headstock bearings on my South Bend also have a few thou play, but if I try to tighten them up by playing with the shims, the bearings start to run a bit warm. Plain bearings need a little clearance to work. I find I can do anything I want with the machine. Some people have made a car...
by RET
Mon Sep 24, 2018 7:18 pm
Forum: Lathes
Topic: Rebuild a Heavy 10L or add a small lathe?
Replies: 12
Views: 863

Re: Rebuild a Heavy 10L or add a small lathe?

Hi Dianne, I have a 13 1/4," WW2 South Bend. It has more wear on the bed than yours but still does a good job. The spindle bearings are OK. However, I had a problem with the cross slide dovetails being "hour glassed" so I made a cutter to match the dovetail angle and used the Bridgeport to remachine...
by RET
Sat Sep 22, 2018 6:36 pm
Forum: Live Steam
Topic: L.E. American & Feedwater?
Replies: 22
Views: 1679

Re: L.E. American & Feedwater?

Hi Dianne, You may have a number of problems. First; yes you definitely need to limit the ball travel. If you don't, it takes too much time when the ram reverses for the pump suction to pull the ball back onto the seat. Look at it in terms of ram travel vs ball check travel. If the ball lifts a lot,...
by RET
Sun Sep 16, 2018 10:08 am
Forum: Live Steam
Topic: Live Steam CNC Defender
Replies: 17
Views: 1700

Re: Live Steam CNC Defender

Hi, CNC doesn't really need defending, but it does open up a whole new world. Things that can be very difficult or impossible to do with conventional machines are easy with CNC. Even writing "G" code isn't hard until you get into the really complex stuff. CNC doesn't replace conventional machining, ...
by RET
Mon Sep 10, 2018 8:02 am
Forum: Live Steam
Topic: Re-facing Slide Valve & Ports
Replies: 53
Views: 3247

Re: Re-facing Slide Valve & Ports

Hi David, What you say makes sense. At least 10 years ago I made 3 lubricator pumps and put two of them on the 3 1/2" gauge Boston & Albany (one on each side). They worked fine, the only issue I had was with the discharge check valve sealing. The least bit of dirt would cause the check valve to leak...
by RET
Sun Sep 09, 2018 10:40 am
Forum: Live Steam
Topic: Re-facing Slide Valve & Ports
Replies: 53
Views: 3247

Re: Re-facing Slide Valve & Ports

Hi, Two things: Does your locomotive have "snifter valves"? If it doesn't, then you could be drawing ash in through the blast pipe as far as the exhaust port. Over time that could cause your problem. Second, Are both parts wearing equally? If the port faces are wearing more, then there could be dirt...
by RET
Mon Sep 03, 2018 6:14 pm
Forum: Live Steam
Topic: 3/4" Scale Coupler Update
Replies: 19
Views: 3153

Re: 3/4" Scale Coupler Update

Hi RN, When you have the proper equipment, it isn't really much harder to produce interchangeable parts than it is to custom fit each set of parts, one to another. You just have to make accurate drawings in CAD that include all the critical dimensions, then use digital readouts and CNC to produce th...
by RET
Mon Sep 03, 2018 9:48 am
Forum: Live Steam
Topic: 3/4" Scale Coupler Update
Replies: 19
Views: 3153

Re: 3/4" Scale Coupler Update

Hi Harold, I made a mistake with the last addition and had to redo it so you can see that it appears twice, the first time without pictures (6:22 pm. version). Could you please remove the "no picture" version and leave the second one that has pictures? Thank you. Richard Trounce. Done! :wink: H