Search found 363 matches

by James Powell
Tue Oct 06, 2020 4:01 am
Forum: Live Steam
Topic: The Home Machinist's 3/4" Scale Locomotive Roster
Replies: 275
Views: 92800

Re:

joerom wrote:
Tue Jan 13, 2009 9:53 pm
hello guys,here is the cast frames for the 3/4 Challenger.
Another set has surfaced:
https://www.stationroadsteam.com/3-12-i ... code-9218/
by James Powell
Mon Oct 05, 2020 9:05 pm
Forum: Live Steam
Topic: 1st Meet at the Kirkwall Central
Replies: 35
Views: 2706

Re: 1st Meet at the Kirkwall Central

Noted, no potato suits... You are much more likely to get the other Powell to show up though, as it's a fair way from here to there...and he can always wear out some more of the wheels on MY loco that way :) (I think that my Brit is the only 3.5" loco he has now- the Tich is shared, and Juliette is ...
by James Powell
Fri Sep 25, 2020 5:49 pm
Forum: Live Steam
Topic: Chloe Boiler Suggestions
Replies: 25
Views: 1973

Re: Chloe Boiler Suggestions

Dan, if you use the formulas, then you come up with length/diameter 17/.250=68 That is right at the very "efficient" end of the boiler scale- and why I wouldn't be using them in a horizontal firetube coal fired boiler. But, it is inside the numbers of what the calculations provide. If you were going...
by James Powell
Fri Sep 25, 2020 10:06 am
Forum: Live Steam
Topic: Chloe Boiler Suggestions
Replies: 25
Views: 1973

Re: Chloe Boiler Suggestions

1/2" won't work for coal? er, yes, it most definitely WILL work for coal. The determining factors for all boilers are L/D ratios, slope (vertical firetube is a different kettle to horizontal...), draft, fuel, tube area to grate area. L/D ratios of around 70 is "ideal". I don't have a Chiloe drawing,...
by James Powell
Mon Sep 21, 2020 11:40 pm
Forum: Live Steam
Topic: GOOD HEALTH TO ALL FROM REXALL
Replies: 30
Views: 6715

Re: GOOD HEALTH TO ALL FROM REXALL

by James Powell
Mon Sep 21, 2020 11:38 pm
Forum: Live Steam
Topic: Minimum Track Radius for Kozo's 3/4" Engines or Similar
Replies: 13
Views: 2476

Re: Minimum Track Radius for Kozo's 3/4" Engines or Similar

3/4" Hoffman Hudson ran fine on 30' radius, as does my Britannia and Caribou. I'm planning around 30' for here. The TSME and Hamilton tracks are both 30' radius. I think (ha) that Toronto Live Steamers was 22', and the Britannia went around that OK. I understand that Ted McJanet's home track was rat...
by James Powell
Tue Aug 04, 2020 5:38 pm
Forum: Live Steam
Topic: Three Cylinder Examples?
Replies: 11
Views: 2111

Re: Three Cylinder Examples?

Pat, the 2:1 lever will give the centre cylinder it's valve timing/motion based on the other two valves actions. The position of the piston is fixed by the crank axle design (usually 120% for a 3 cylinder simple engine), so you can use the relative position of the other two sets of valve gear to run...
by James Powell
Tue Aug 04, 2020 6:52 am
Forum: Live Steam
Topic: Three Cylinder Examples?
Replies: 11
Views: 2111

Re: Three Cylinder Examples?

Been done as small as Gauge 1 by Aster. (Swiss compound), and probably O gauge as well. I have an article on a Webb compound 2-2-2-2 in gauge 1 (I think in "Your Model Railway", though I could be wrong) that makes interesting reading. Dad had a 2.5" gauge 3 cylinder engine, in the form of a LNER V2....
by James Powell
Tue Jun 30, 2020 7:08 pm
Forum: Live Steam
Topic: Nusky/Mercer 0-4-0 driver width?
Replies: 20
Views: 5852

Re: Nusky/Mercer 0-4-0 driver width?

If it was I making an engine to 7.25" gauge, I would make the flange and Back to Back as per the Greenly Standards, and the treads wide enough to run on 7.625. I'm faced with that as a debate point, as dad has a 7.25" gauge loco that I am waiting to find out if I can get away with 7.525" gauge track...
by James Powell
Mon Jun 29, 2020 5:19 pm
Forum: Live Steam
Topic: hydrostatic oil
Replies: 11
Views: 2855

Re: hydrostatic oil

So, oils like TK460 (Chevron) will mix with water- that's the point of them being a compounded cylinder oil. Oils like Mil-L-357 (Steam _turbine_ oil) don't form emulsions with water, and are used in applications where there will be condensation into the oil, and you want good separation properties....
by James Powell
Sat Jun 27, 2020 10:51 pm
Forum: Live Steam
Topic: Topic For Discussion
Replies: 28
Views: 4994

Re: Topic For Discussion

Marty, Can I suggest following the adjustable foot arrangement as well? It is a little more work right now to do so, but it means that the track is leveled rather than having to level the ground? I think it only means the weld for the nut on the tube, in that both the foot and the top are welded alr...
by James Powell
Fri Jun 26, 2020 5:58 am
Forum: Live Steam
Topic: Topic For Discussion
Replies: 28
Views: 4994

Re: Topic For Discussion

Interesting. I brought home the other section of the original Niagara Interlake RR yesterday from a private owner. It is a 400-foot loop complete with supports. Apparently the Art Ellis track was split into two in the foggy mists of time and TSME got one loop. Probably because TSME has the first se...