SP Ten Wheeler Drawings

[jimmo]

I was wondering if any of you know where I can find drawings for SP T-series locos? What I want to do is take my N-scale Bachmann 10-wheeler and turn it into a late model Southern Pacific loco. Ultimately I would like to make a conversion kit where the modeler removes the factory shell and installs a detailed 3D printed shell. I also need to replace the tender with the appropriate model which I intend on making as part of the kit.

[Chris333]

If it's in the cylopedia I'll email it once  I'm home from work.

[jimmo]

Much appreciated Chris.

[Spades]

I've always been partial to the T-31 class http://espee.railfan.net/nonindex/steam-01/2356_sp-steam-t31-gene_deimling.jpg

[jimmo]

I've always been partial to the T-31 class http://espee.railfan.net/nonindex/steam-01/2356_sp-steam-t31-gene_deimling.jpg

Chris333 sent me some T-28 drawings from the cyclopedia. It's a larger engine than the Bachmann mechanism, plus it also has the uneven driver spacing. What I did was take some key elements from the T-28 drawing and place them over a scan of my loco and (so far) it's starting to look very espee-like.

[Spades]

Jimmo

The T-28ish sounds like a great project.  I model SP in the early 1990s, but I do have 2 Steam locomotives, all Bachmann.  Not to relive the national nightmare that was the Bachmann K4 thread. The Spectrum 2-8-0 can be easily bashed into a C-9? class, and the light Mountain with new tender and mods to the cab & boiler can produce a epeeish feel. I look forward to your product.

G

[jimmo]

I'm not sure it's going to be a product. Originally I thought I could just make a new boiler/cab print as a drop-on conversion but I discovered that the boiler is metal so a FUD or FXD print would not be a good replacement for it. We'll see how it goes with the rest of the conversion, however.

[honk honk]

California State Railroad Museum would be a good source for these drawings possibly...

I'm partial to the T-1s. 2248 and 2252 are still around. 2248 runs.

Attached is an image of the 2248 in fire train service.

[jimmo]

California State Railroad Museum would be a good source for these drawings possibly...

I'm partial to the T-1s. 2248 and 2252 are still around. 2248 runs.

Attached is an image of the 2248 in fire train service.

Thanks for the pic and the info.

I think that the T-1 would be the easiest conversion for the B-mann 4-6-0 because it appears to be close in dimensions plus the cylinders are the older style. The B-mann valve gear is more complicated. After studying the different types of valve gear I still don't know what kind it is. Simplifying it looks like it would be fairly straight-forward.

I already have a SW cab for it that I haven't printed yet.

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[Spades]

I'm not sure it's going to be a product. Originally I thought I could just make a new boiler/cab print as a drop-on conversion but I discovered that the boiler is metal so a FUD or FXD print would not be a good replacement for it. We'll see how it goes with the rest of the conversion, however.

Is there any way to cast openings, hollow domes or channels into the inside of a shell to allow a modeller to add tungsten?  There is really no carving on the Bmann shell

[honk honk]

The T-1s had Stephenson valve gear. it is almost entirely located in between the frame rails where as Walsherts valve gear is outside the frame.

Would it be possible to strip the eccentric crank/radius rod/etc from the side of the Bachmann locomotive to make it appear as if it had Stephenson valve gear? I think that's what you were getting at with your comment...

Modified comments to include that the old style valves are American balanced slide valves. They have the square steam chests.

Let me dig around some of my odds and ends information at the house when I get home today and see what I have on the T-1s.

[jimmo]

Is there any way to cast openings, hollow domes or channels into the inside of a shell to allow a modeller to add tungsten?  There is really no carving on the Bmann shell

The boiler on the Bachmann 4-6-0 is a metal casting providing the main weight for the entire locomotive--it's not a shell per se. I thought that it was initially until Chris333 informed me otherwise. The chassis is also metal. I can't see any other place on the loco that weight could be added except the cab but my concern there is balance.

[jimmo]

The T-1s had Stephenson valve gear. it is almost entirely located in between the frame rails where as Walsherts valve gear is outside the frame.

Would it be possible to strip the eccentric crank/radius rod/etc from the side of the Bachmann locomotive to make it appear as if it had Stephenson valve gear? I think that's what you were getting at with your comment...

That would explain why they don't appear to have valve gear. Maintenance must have been a bitch

Modified comments to include that the old style valves are American balanced slide valves. They have the square steam chests.

Let me dig around some of my odds and ends information at the house when I get home today and see what I have on the T-1s.

Thanks for the info. I'm most certainly a steam neophyte.

[honk honk]

I would place this attached document in about 1948...

It's the "Descriptive Record of Locomotive" number 2248.

[SandyEggoJake]

I'm in the contemplation phase of a similar project - the fleet of four T-58 - given the similar-to-model fairly even spaced drivers and large drivers (in the prototype, 63"), even as the stock boiler seems a tad long.

http://digital.denverlibrary.org/cdm/singleitem/collection/p15330coll22/id/65328/rec/2

Still looking for the elevation and section drawing (already have the erection diagram).   

Will need to rework the steam done and connecting rods, move bell and headlamp, and replace the cylinders (perhaps with some of the Bmann 2-8-0).  Might be interested in your SW cab, which seems much closer to my prototype than the fairly flat roof stock cab.