Search found 733 matches

by rudd
Sun Dec 03, 2023 11:30 am
Forum: Live Steam
Topic: Clearance btwn firebox and frame
Replies: 5
Views: 3228

Re: Clearance btwn firebox and frame

Thanks Bill.
Protrusion will be handled by someone who knows what they are doing :)
Ive seen some incredibly tight fits on 12" = 1'-0" lokes.
by rudd
Sat Dec 02, 2023 3:05 pm
Forum: Live Steam
Topic: Clearance btwn firebox and frame
Replies: 5
Views: 3228

Clearance btwn firebox and frame

I’m “scratch bashing” a little Porter mogul. Thanksgiving day it became chassis on air. On to the boiler. I have the Allen mogul drawings for a “go-by” of sorts, but it looks like the firebox is wider than the distance between the frame rails there. Given that the sides of the firebox are going to b...
by rudd
Sun Sep 25, 2022 4:55 pm
Forum: Live Steam
Topic: flare fittings - which angle?
Replies: 3
Views: 2007

flare fittings - which angle?

Valve gear is about wrapped up, I need to start thinking about chassis on air.
I see flare fittings are recommended in the smokebox, there are 37 degree and 45 degree flares, The 37 supposedly holds more pressure but requires sleeves.
What are folks successfully using?
thanks
by rudd
Wed Apr 20, 2022 8:45 pm
Forum: Live Steam
Topic: Engine Truck
Replies: 11
Views: 4240

Re: Engine Truck

Those that are saying you need a large vertical travel - are those trucks just sprung, or are they equalized with the drivers? I am sprung and equalized with the front drivers on my mogul, which has not seen track yet. It's built just like Mr. Porter intended. Not much travel in the leaf springs. Pl...
by rudd
Mon Apr 18, 2022 8:59 pm
Forum: Live Steam
Topic: Engine Truck
Replies: 11
Views: 4240

Re: Engine Truck

Look up "Bissell Truck" for an in depth explanation of the "leading" aspect of the lead truck and how it works. The lead truck should pivot R-L around a point quite behind it, which can be determined by mathematical formula.
by rudd
Mon Apr 18, 2022 8:55 pm
Forum: Live Steam
Topic: Brass
Replies: 17
Views: 7474

Re: Brass

If your brass polish (I'm looking at you Brasso) has ammonia in it, it will increase the rate of corrosion. Ammonia fumes can in fact be used to put a brown patina on brass.
Rudd, a former apprentice to a materials conservator.
by rudd
Fri Apr 15, 2022 2:35 pm
Forum: Live Steam
Topic: Mich-Cal 1.5 Shay.
Replies: 6
Views: 4907

Re: Mich-Cal 1.5 Shay.

Hi, I'm looking for a supplier of Brass tubing other than McMaster Carr, MSC, or Grainger. Need sizes from 1/8" up to 3/8" total length about 60' of each size. In the Ohio area. Thanks. Check Speedymetals.com and onlinemetals.com. Note I have had shipping delays out of the second one, bes...
by rudd
Mon Apr 11, 2022 7:17 pm
Forum: Live Steam
Topic: Laird Crossheads
Replies: 8
Views: 5435

Re: Laird Crossheads

There are two kinds - the ones that use two guide bars with the CH sliding between them. This is what I sometimes see in models, like Fitchburg. The ones that used one CH guidebar and the CH kinda "wraps" around it. This is what I see on lots of Porters. These can be whittled out of chunk-...
by rudd
Mon Apr 11, 2022 7:07 pm
Forum: General Discussion
Topic: Eccentric Hole in Bearing
Replies: 9
Views: 5365

Re: Eccentric Hole in Bearing

Easy. Put stock in lathe. Turn OD. Put DI on stock and use chuck jaws to move it over offset dimension. If I am reading your drawing right, that is square root of 8 units.
Drill, bore, ream center hole.
by rudd
Wed Apr 06, 2022 8:00 pm
Forum: Live Steam
Topic: Copper refrigerator line on steam engine
Replies: 13
Views: 6617

Re: Copper refrigerator line on steam engine

I am not seeing 303 tubing on the market, I see 304, 321, and 316.. If the 303 is better, where does one get it?
by rudd
Thu Mar 31, 2022 8:30 pm
Forum: Live Steam
Topic: boiler heads and fittings
Replies: 6
Views: 3387

Re: boiler heads and fittings

The soft solder suggestion on the other board is why I suggested you come here. Those folks are going to comment whether or not they have a clue. Soft solder looses too much strength with temperature. The 30 psi steam will be at about 264 degrees f. Soft solder melts as low as 360f. It will already ...
by rudd
Tue Mar 29, 2022 5:35 pm
Forum: Live Steam
Topic: slide valves very hard to move.
Replies: 28
Views: 11381

Re: slide valves very hard to move.

I used way oil because the valve was a bit hard to get started moving, but then would slide (at lower pressures). Way oil - yes, it has "tackifiers" to make it cling to surfaces, and is engineered to prevent "sticktion", which is what I was seeing, so it seemed like the ideal sol...