Search found 16373 matches

by Harold_V
Sun May 27, 2018 1:58 am
Forum: Live Steam
Topic: Stainless steel boiler/exchanger?
Replies: 50
Views: 3024

Re: Stainless steel boiler/exchanger?

My question was more a hypothetical, just curious how they would work. Not going to suggest going out and buying it. the average guy can't afford a 7-8k boiler for a mikado either... I understand, not only the curiosity about if they'd work, but the price of a boiler, too. Earlier in this thread th...
by Harold_V
Sat May 26, 2018 3:14 pm
Forum: Live Steam
Topic: Stainless steel boiler/exchanger?
Replies: 50
Views: 3024

Re: Stainless steel boiler/exchanger?

Berkman wrote:
Sat May 26, 2018 8:08 am
How does monel or inconel compare to the duplex ss?
Neither of them would be an acceptable option, due to their cost. The average guy couldn't afford them. They make copper look like a bargain.

H
by Harold_V
Sat May 26, 2018 3:10 pm
Forum: Live Steam
Topic: Stainless steel boiler/exchanger?
Replies: 50
Views: 3024

Re: Stainless steel boiler/exchanger?

What stainless steel alloy would be best for piston rods? We're rebuilding a sorely abused Locomobile motor for the WAAAMuseum in Hood River, OR. ~R Pretty much any stainless alloy will serve, but the 300 series tends to be easy to gall, so I'd avoid them unless I had no alternative. Of all the sta...
by Harold_V
Sat May 26, 2018 1:38 am
Forum: General Discussion
Topic: Chinese Vials
Replies: 6
Views: 155

Re: Chinese Vials

Some math says that is 20 millionths over 4 inches or 50 millionths over 10 inches. I'm inclined to suggest that isn't true, as that degree of precision is ten times better than the levels that were and are offered by major instrument makers in the USA. For example, the Starrett 199 is reputed to y...
by Harold_V
Thu May 24, 2018 1:21 am
Forum: General Discussion
Topic: Another "How to make" question
Replies: 21
Views: 465

Re: Another "How to make" question

Your image is much too small to be read. Yep! Pretty much useless. When posting pictures, don't make them thumbnails. The software does that automatically. If it's important that they are legible, post them an appropriate size. The software shows a thumbnail, but it can be clicked so readers can se...
by Harold_V
Thu May 24, 2018 1:17 am
Forum: General Discussion
Topic: Atlas quick wheel
Replies: 11
Views: 333

Re: Atlas quick wheel

I think you'll find that sockets aren't too hard to machine. If they were, they'd fracture under shock loads, or under excessive stress. They're tough (likely near 50Rc), but machinable.

H
by Harold_V
Wed May 23, 2018 3:23 pm
Forum: Welding
Topic: Micro torch?
Replies: 8
Views: 172

Re: Micro torch?

Be aware that the torch set does NOT include regulators. It's a knock-off of the Smith mini torch, which comes with not only regulators, but a set of mini bottles. The torch set offered would not be functional without them. You need not worry about the smallest tip if you acquire a Smith torch, as o...
by Harold_V
Tue May 22, 2018 4:05 pm
Forum: General Discussion
Topic: Thin workholding suggestions
Replies: 10
Views: 324

Re: Thin workholding suggestions

One thing to keep in mind is that flat material has a tendency to bow when you remove stock from either side. If you hope to keep the parts flat, it's a good idea to remove material in steps, alternating shallow cuts and flipping the part, so a roughly equal amount of stock is removed from both side...
by Harold_V
Tue May 22, 2018 1:14 am
Forum: Live Steam
Topic: Two Silver Soldering Questions
Replies: 33
Views: 1274

Re: Two Silver Soldering Questions

Harold writes: Tight tolerance, in and of itself, won't be cause for an assembly to not function. But it may be cause for it to not be manufactured. And that, too, is an engineering issue. Over engineering may not create a better widget. The point one should take away from this discussion is that c...
by Harold_V
Mon May 21, 2018 3:57 pm
Forum: Live Steam
Topic: Two Silver Soldering Questions
Replies: 33
Views: 1274

Re: Two Silver Soldering Questions

Correct. It's not a tolerance issue, it's an engineering issue. Tight tolerance, in and of itself, won't be cause for an assembly to not function . In fact, it is instrumental in achieving consistency. If a fit is improperly designed, widening the tolerance exacerbates the problem, while tightening ...
by Harold_V
Mon May 21, 2018 3:41 pm
Forum: General Discussion
Topic: Keyways
Replies: 8
Views: 283

Re: Keyways

If a 1/4" straight keyseat was cut for a length of 8" on a 1-3/16" shaft what are the odds this might affect the shaft straightness? Pretty much 100%. It's just a matter of how much. Any time you remove metal unevenly, you can expect movement. That's especially true if you interrupt cold finished m...
by Harold_V
Mon May 21, 2018 3:23 am
Forum: Build Log
Topic: Building the 2.5" Scale Shay
Replies: 692
Views: 81063

Re: Building the 2.5" Scale Shay

I also need to figure out how to attach the cast iron smoke stack ring to the steel pipe for the stack. Maybe careful brazing? If the ring has enough wall and thickness, and you'd like a nice, clean look that can be disassembled, you might consider drilling and tapping the ring, and using fasteners...