Search found 777 matches

by RET
Fri Mar 22, 2019 8:34 am
Forum: Live Steam
Topic: Jesse Livingston
Replies: 10
Views: 522

Re: Jesse Livingston

Hi, I'm sorry to hear that. Although he hasn't been active on chaski for quite some time, I'm sure many will miss his comments. I know I for one always appreciated his ideas and replies. They were always informative and well worth considering. He was always polite, humorous and kind. Richard Trounce.
by RET
Wed Mar 06, 2019 7:23 pm
Forum: Live Steam
Topic: Trains in Ireland? Priorities in London?
Replies: 13
Views: 816

Re: Trains in Ireland? Priorities in London?

Hi, Try and hit the Science Museum in South Kensington on a day when they are running the corliss mill engine. It is easy to see that it is running on steam because you can feel the heat from the engine. Very impressive. For any mechanically minded person, that whole museum is well worth a visit. I'...
by RET
Tue Feb 26, 2019 10:38 pm
Forum: Live Steam
Topic: Good supplier of water gauge glass? 1/2" O.D
Replies: 23
Views: 3370

Re: Good supplier of water gauge glass? 1/2" O.D

Hi, See if you can find a laboratory supply catalog on line. If you can, look for pipettes with the OD. you want. Many will even have graduation marks on the outside. Most pipettes will be low expansion borosilicate glass. Although it is quite unlikely, if you happen to get hold of tempered glass, i...
by RET
Tue Feb 26, 2019 9:26 am
Forum: Live Steam
Topic: Power Reverser questions
Replies: 20
Views: 2518

Re: Power Reverser questions

Hi, Sometimes the obvious just takes a little longer. When you think about it, the full size power reverse units had to be run on air. If steam or water was used, in winter any water in the unit (condensed or otherwise) would freeze, rendering the unit immobile and in many cases, probably damaging t...
by RET
Mon Feb 11, 2019 10:48 am
Forum: Live Steam
Topic: Power Reverser questions
Replies: 20
Views: 2518

Re: Power Reverser questions

Hi Bill, If you check the thread "Union Pacific Big Boy in 3/4" scale," you will see that the control valve body is already made. I still have to make the valve cover and valve plate. The valve body except for the mounting flanges is roughly a 3/8" cube which is held onto the top of the reverser cyl...
by RET
Sun Feb 10, 2019 11:03 pm
Forum: Live Steam
Topic: Power Reverser questions
Replies: 20
Views: 2518

Re: Power Reverser questions

Hi, I checked my copy of the Locomotive Cyclopedia (1941 version) and it says that the Alco units were air powered. These units were a simple servo mechanism. When the unit is at rest with the supply pressure on, if you look at the linkage, you can see that motion of the control lever will cause the...
by RET
Sun Feb 10, 2019 2:02 pm
Forum: Live Steam
Topic: Power Reverser questions
Replies: 20
Views: 2518

Re: Power Reverser questions

Hi, Two things to think about. First, in the Big Boy video I have, it takes about 5 seconds for the reverse unit to go from full forward to full reverse. Slow and deliberate, not fast. Second, if you run a model locomotive while holding onto the unlatched Johnson bar with your hand, you can feel fai...
by RET
Sun Feb 03, 2019 9:25 am
Forum: Live Steam
Topic: silver soldering steel to steel
Replies: 34
Views: 3796

Re: silver soldering steel to steel

Hi, What Builder01 is showing is the right stuff. Insulating brick is white, it is very light (because it is mostly air) and has no mechanical strength to speak of. Anything between G20 to G23 are the designations you want. If I remember right, the higher numbers are more fragile but insulate better...
by RET
Sat Feb 02, 2019 10:32 am
Forum: Live Steam
Topic: silver soldering steel to steel
Replies: 34
Views: 3796

Re: silver soldering steel to steel

Hi John, The obvious question is; why not take a couple of pieces of the steel you are going to use and try to silver solder them together? This should give you all the answers you need before you put any significant work in what you want to make. From what Don & the others are saying it should work...
by RET
Wed Jan 30, 2019 8:09 am
Forum: Live Steam
Topic: silver soldering steel to steel
Replies: 34
Views: 3796

Re: silver soldering steel to steel

Hi, One thing I forgot to mention is that I do all my silver soldering on an insulating brick "hearth." This makes a big difference, since you don't have to worry about the heat getting away from the underside of the part. Don't use firebrick, it isn't a good enough insulator; what you need is the w...
by RET
Tue Jan 29, 2019 9:38 am
Forum: Live Steam
Topic: silver soldering steel to steel
Replies: 34
Views: 3796

Re: silver soldering steel to steel

Hi John, Everything that's been said so far is good but there is a little more to it. First, with big parts especially, you can overheat and burn the white flux. When you do, it turns black and doesn't work any more, but I have never been able to do the same thing with the black stuff. Second, Use l...
by RET
Sat Jan 26, 2019 12:23 pm
Forum: Live Steam
Topic: Union Pacific Big Boy in 3/4 Inch Scale
Replies: 114
Views: 37241

Re: Union Pacific Big Boy in 3/4 Inch Scale

Hi, I have used riffler and ordinary files to finish one side of the crosshead guide and the machining grooves disappear quite easily but in this last while, I have been working on the top feed assembly. What you see isn't quite finished, but the finishing touches are relatively minor. The 4 bolt ho...