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Re: Rebuild of an Allen Mogul.

Posted: Sun Oct 29, 2017 9:58 am
by NP317
That locomotive REALLY needs you!
Getting it cleaned up and re-plumbed for functionality will certainly make a difference.
Fun to watch your progress. Thanks for sharing.
~RN

Re: Rebuild of an Allen Mogul.

Posted: Tue Oct 31, 2017 6:50 am
by utahwestie
A few views inside the smoke box. It's not looking pretty with the petticoat corroded away like this. They had a piece of plumbing pipe jammed down the smoke stack as a replacement,(you can make it out in the first picture) I thought I had a better picture of it than that. Once I get up the railroad in the next few weeks, i'll take a picture of it. I believe that is what has caused the hole in the original stack.

I'm accepting ideas and opinions on how to remedy this... Do I just go with the same idea and use an insert down through the stack or do I go ahead and make a new petticoat, or go ahead and buy new smoke box castings.

Re: Rebuild of an Allen Mogul.

Posted: Tue Oct 31, 2017 7:59 am
by PeterCraymer
My vote is that since it appears that you have to replace the stack, make a new petticoat and blast pipe that attaches inside the new stack and re-use the smokebox half. The aluminum castings may have had some porosity, but the bottom line is that they were melted away from the heat. The peticaot could be a flanged piece that bolts under the stack and extends in to the smokebox. Mine is all steel, so I welded it in and left a boss for the stock stack to fit over and bolt down as on the print.

Peter

Re: Rebuild of an Allen Mogul.

Posted: Tue Oct 31, 2017 10:22 am
by NP317
Consider acquiring the new cast iron smokebox upper half and smoke stack from Allen Models.
I've never seen a melted petticoat on an Allen front end! But that just might be my lack of experience...
I can see light through the joint between the smokebox halves.
Lots of room for improvements with this project.
~RN

Re: Rebuild of an Allen Mogul.

Posted: Tue Oct 31, 2017 1:58 pm
by Marty_Knox
NP317 wrote:Consider acquiring the new cast iron smokebox upper half and smoke stack from Allen Models.
I've never seen a melted petticoat on an Allen front end! But that just might be my lack of experience...
I can see light through the joint between the smokebox halves.
Lots of room for improvements with this project.
~RN
I rebuilt a Ten-Wheeler with a melted petticoat. It was a propane burner that was running on too much pressure and had air leaks into the smokebox. I suspect he was having a secondary fire in the smokebox.
Oh, and all the paint, grease, and oil was burned off underneath the firebox. Only time I have seen the needle bearings fail.

Re: Rebuild of an Allen Mogul.

Posted: Wed Nov 01, 2017 7:40 am
by PeterCraymer
I knew a guy that got burned from the aluminum petticoat melting on a Allen 10-wheeler. It was shooting out the stack with each exhaust beat! He was running a crazy pressurized kerosene/diesel fuel system and as mentioned, I believe that the fire in the firebox wasn't the only one!
Peter

Re: Rebuild of an Allen Mogul.

Posted: Sat Feb 03, 2018 8:33 am
by utahwestie
Hello all.

After a break with ankle surgery and the holidays I got some photos to show we are still working on the Mogul.....

Jacketing off, insulation removed, boiler removed and finally a bath. Boiler looks like it was full of crap. Boiler has had a flush at the time of writing this. Going to take my bore-scope and look inside a bit later today.

Re: Rebuild of an Allen Mogul.

Posted: Sat Feb 03, 2018 8:35 am
by utahwestie
more pics

Re: Rebuild of an Allen Mogul.

Posted: Sat Feb 03, 2018 8:35 am
by utahwestie
pics

Re: Rebuild of an Allen Mogul.

Posted: Sat Feb 03, 2018 8:37 am
by utahwestie
wash time.

Re: Rebuild of an Allen Mogul.

Posted: Sun Feb 04, 2018 2:18 pm
by utahwestie
Well, I guess the melted petticoat had to go somewhere......

smoke box removal, and just a couple of pictures of the melted aluminum petticoat remains in the bottom of the smoke box saddle casting.....

I removed the smoke box to remove the remains of the petticoat, make a new petticoat and machine to fit the new smoke stack casting that I got from Allen Models of Nevada....

Re: Rebuild of an Allen Mogul.

Posted: Sun Feb 04, 2018 2:18 pm
by utahwestie
inside saddle casting