Search found 3121 matches

by gwrdriver
Fri Oct 02, 2020 4:37 pm
Forum: Live Steam
Topic: Sil-Phos Identification
Replies: 31
Views: 2007

Re: Sil-Phos Identification

I've never thought very much of the idea of plating a boiler interior in any way for protection. All it would take would be one inaccessible or "dirty" place where the plating doesn't take, and protective shield would be chemically or electrolytically penetrated and then you might as well not have i...
by gwrdriver
Sat Sep 26, 2020 7:30 am
Forum: Live Steam
Topic: Dome Patterns
Replies: 9
Views: 1081

Re: Dome Patterns

I have a dome to cast also (brass), but I haven't begun pattern making yet. Since 3D technology seems to be advancing faster that I can get a "round tuit", maybe I won't need to. Still, there's a part of me that says "You've made everything else, might as well make the pattern too."
by gwrdriver
Fri Sep 25, 2020 4:51 pm
Forum: Live Steam
Topic: Chloe Boiler Suggestions
Replies: 25
Views: 2123

Re: Chloe Boiler Suggestions

FWIW, the formula (for L = 24") gives an ID range of .565" to .660".
by gwrdriver
Fri Sep 25, 2020 12:46 pm
Forum: Live Steam
Topic: Chloe Boiler Suggestions
Replies: 25
Views: 2123

Re: Chloe Boiler Suggestions

What James said, mostly. The formula is D² = L/55~75, where D is the flue ID and L is the effective flue length. Plugging in a factor of between 55 & 75 will give a flue ID (D) which will be optimized (so far we're able to optimize such things) for the best combination of gas flow against rate of he...
by gwrdriver
Fri Sep 11, 2020 5:48 pm
Forum: Live Steam
Topic: Machining a bell for better tone
Replies: 24
Views: 3771

Re: Machining a bell for better tone

Bell bronze is 80% Copper, 20% Tin, nothing else. Some people think that adding Silver makes for a sweeter tone, nonsense! Actually, many people, or so it was believed. An ancient tradition was to toss a silver coin into the flask for just that reason. It probably made little actual difference.
by gwrdriver
Tue Aug 25, 2020 7:26 pm
Forum: General Discussion
Topic: Cute Mystery Indexer
Replies: 6
Views: 1114

Cute Mystery Indexer

This week I've been cleaning up a few remains I inherited from a former mentor's workshop and in a box of odd bits was this little indexer. In 30+ years I never saw him use it, or even mention it, so I don't know anything about it. It's unmarked in any way (except for divisions & numerals) and I've ...
by gwrdriver
Tue Aug 25, 2020 6:52 pm
Forum: Live Steam
Topic: 000-120 hex head screws
Replies: 8
Views: 1536

Re: 000-120 hex head screws

I'd think you'd want to change lanes and start looking at watchmaking and horologist suppliers.
by gwrdriver
Wed Aug 19, 2020 6:21 am
Forum: Live Steam
Topic: Leaf spring, blue temper stock sources?
Replies: 20
Views: 3317

Re: Leaf spring, blue temper stock sources?

IMHO a lot of it has to do with the proportions of the spring. My first leaf sprung project used 1/4"x .032" in a relatively short (in height) stack but relatively long from hanger to hanger. Those springs were a bit stiff but worked OK. The second used 1/2"x .062" (plumber's snake) of relatively sh...
by gwrdriver
Tue Aug 18, 2020 2:07 pm
Forum: Live Steam
Topic: Leaf spring, blue temper stock sources?
Replies: 20
Views: 3317

Re: Leaf spring, blue temper stock sources?

I used plumber's snake material on a couple of projects years ago, and I still have some 1/4"x.032". 30-40 years ago they were real blue spring steel, no telling what it is now.
by gwrdriver
Fri Jul 10, 2020 10:12 am
Forum: Live Steam
Topic: Harbor Freight Jack Stands Recall
Replies: 16
Views: 3969

Re: Harbor Freight Jack Stands Recall

Harbor Freight has its uses. I always try to buy quality lifetime tools, but things aren't always needed for a lifetime. I recently bought a HF air trim nail gun for dead cheap. If I expected to do trim work regularly for many years to come I would have bought the best. But if the HF gun lasts throu...
by gwrdriver
Tue Jun 30, 2020 12:14 pm
Forum: Live Steam
Topic: hydrostatic oil
Replies: 11
Views: 2869

Re: hydrostatic oil

I suspect that "mix" is the troublesome part here. Let's throw out that term because it's a chemical fact that oil and water don't "mix." We all know that. What it does (in a hydrostatic lubricator), as I said earlier, is form an emulsion. An Emulsion is a mixture of two immiscible (non-mutually sol...
by gwrdriver
Mon Jun 29, 2020 4:24 pm
Forum: Live Steam
Topic: hydrostatic oil
Replies: 11
Views: 2869

Re: hydrostatic oil

Might be bad, might not. There's no way for us to tell what you mean by "mixing" exactly, but a proper steam oil (usually labelled by petroleum companies as "steam cylinder oil") will mix, or specifically, form an emulsion with steam and condensate. If you use a proper steam cylinder oil of around I...