Search found 83 matches

by daves1459
Tue Aug 14, 2018 8:18 pm
Forum: Live Steam
Topic: Boiler Lagging Joint
Replies: 7
Views: 414

Re: Boiler Lagging Joint

My Ten Wheeler has horizontal joints in the jacketing because I could not get the blued stove pipe large enough. So I made simple 1-fold joints that hook together, just under the hand rails. The upper joint overlaps the lower one to keep water out of the joint. Each course of jacket is clamped at t...
by daves1459
Mon Aug 13, 2018 10:55 pm
Forum: Live Steam
Topic: Boiler Lagging Joint
Replies: 7
Views: 414

Boiler Lagging Joint

I have noticed in several steam locomotive pkoto what appears to be a horizontal seam or joint in the boiler lagging. The seam or joint seems to be most prominent on pre 1900 locomotives when Russian iron is used for the lagging. Case in point is the NYC&HR 999 of 1893 that I am modeling. Note in th...
by daves1459
Sun Jul 29, 2018 10:14 pm
Forum: Live Steam
Topic: The boiler jacket for the K-4
Replies: 13
Views: 966

Re: The boiler jacket for the K-4

. Dave, is this an all-new jacket & sub-jacket, or are you re-using the original materials? If I understand your question correctly the answer is all new materials. What is pictured is the restoration of a Disney loco that construction started in 1953. After several owners it sat idle in an unheate...
by daves1459
Sun Jul 29, 2018 10:01 pm
Forum: Live Steam
Topic: The boiler jacket for the K-4
Replies: 13
Views: 966

Re: The boiler jacket for the K-4

Wonder how much weight that added? It is a rather small boiler so the total added weight was not a lot. The weight as I recall was around 12 pounds. I also put a lead plug in the sand dome that weighed 7 pounds. The advertised weight of the loco was 250 pounds which is probably optimistic. I also p...
by daves1459
Thu Jul 26, 2018 11:11 pm
Forum: Live Steam
Topic: The boiler jacket for the K-4
Replies: 13
Views: 966

Re: The boiler jacket for the K-4

has anyone added lead sheet under the jacket for added weight ? I have. I got the lead sheet from McMaster-Carr. They have several thicknesses available. First I insulated the boiler with 3/32" thick adhesive back woven ceramic insulation, also from McMaster-Carr. The insulation comes in strip and ...
by daves1459
Mon Jul 23, 2018 9:06 pm
Forum: Live Steam
Topic: Rapid Steam Pressure Loss
Replies: 24
Views: 1934

Re: Rapid Steam Pressure Loss

In an effort to reduce the exhaust nozzle draft and thus reduce the firebox vacuum/air flow I made a special exhaust nozzle. It is shown in the first picture. In front is the original nozzle. Behind it is a threaded adaptor plate that attaches same as the original nozzle. To the left is the new exte...
by daves1459
Mon Jul 23, 2018 8:14 pm
Forum: Live Steam
Topic: Rapid Steam Pressure Loss
Replies: 24
Views: 1934

Re: Rapid Steam Pressure Loss

Dave, Do you have the ability to view the flame while your running? I ran into a similar situation with my loco but I found that I was not getting enough air to support combustion. It worked great on level tracks but once you began working a grade pressure would plummet. I found, by watching throug...
by daves1459
Sun Jul 15, 2018 11:40 pm
Forum: Live Steam
Topic: Rapid Steam Pressure Loss
Replies: 24
Views: 1934

Re: Rapid Syeam Pressure Loss

What size are the holes for your blower? They almost look like the same size as your exhaust. I have 6 x .0625 diameter holes for my blower, (print dimensions from Gene Allen's consolidation drawings). Best way to determine blower/draft is to open fire box door and adjust until no flames come out o...
by daves1459
Tue Jul 10, 2018 3:15 pm
Forum: Live Steam
Topic: Rapid Steam Pressure Loss
Replies: 24
Views: 1934

Re: Rapid Syeam Pressure Loss

Morning Dave, interesting write up. I have a few years of propane burning under my belt. the design and setup sounds good with the exception of the excessive draft chilling the fire box, as your testing shows. the ways i have seen this addressed is, extending the blast nozzle up into the petty coat...
by daves1459
Tue Jul 10, 2018 3:09 pm
Forum: Live Steam
Topic: Rapid Steam Pressure Loss
Replies: 24
Views: 1934

Re: Rapid Syeam Pressure Loss

It appears the general opinion is too much draft. I imagine the next step is to cause a reduction in draft and determine if there is a measurable reduction in the amount of steam pressure loss for the same amount of work. It is very easy for me to remove the exhaust nozzle as shown in the picture an...
by daves1459
Tue Jul 10, 2018 2:53 pm
Forum: Live Steam
Topic: Rapid Steam Pressure Loss
Replies: 24
Views: 1934

Re: Rapid Syeam Pressure Loss

Sounds like to much air. Also, from the picture you gave us a question is does any flame reach the water legs sides of the firebox? It seems like all the burners point straight up to crown sheet. As others have said very little blower should be needed. The flames actually radiate sideways through s...
by daves1459
Tue Jul 10, 2018 10:12 am
Forum: Live Steam
Topic: Rapid Steam Pressure Loss
Replies: 24
Views: 1934

Re: Rapid Syeam Pressure Loss

Interesting write up. Sorry to read loco operating performance is suffering...at least the little tea kettle steams well. Maybe, too well. You listed various types of correction action as follows... 1. Raise the exhaust nozzle up into the stack. 2. Put a variable damper in the smoke box. 3. Put var...