Kitbashing SP 2-8-0 (Part 1) - Overview of C-8/9/10 with OMM Conversion Parts

This is a quick overview of the engine numbers for SP C-8/9/10 class engines.  The exact details of the running boards, piping, fittings, etc on these engines varied over the years, so this is not a specific detail checking spreadsheet roster (yet), but more an overview guide to help the modeler find what engine they wish to model.

OwlMtModel's announcement of the conversion kit for HO scale Bachmann-Spectrum 2-8-0

OwlMtModels is taking reservations for a new project to kitbash Bachmann-Spectrum 2-8-0s into 90+% stand-ins for SP's C-8/9/10 class engines.  I should mention that the cylinders are very close to the same as used on SP's smaller C-class engines (C-1/2/3/4/5), except that the Bachmann engines drive will not lend itself easily to being 'shortened' in height, as that would involve the spacing of the toothed belt drive and machining the frame and boiler weights.  If a modeler wishes to use the parts to make one of the other smaller C-class as a looser stand-in, then by all means do so.

Several friends have approached me about getting roster data, and possibly some photos together to help modelers wishing to do this kitbash a better idea what cylinder variations and engine numbers to look into.

Cylinder Options & The Sheedy By-Pass System

Four options of cylinders for OwlMtModels' 2-8-0 conversion kit.

During the 1911-1920s  a special 'drifting valve' system called the "Sheedy By-pass Valve" were used on a large number of SP engines across multiple wheel arrangements.  However by the 1920s it seems that many problems plagued the Sheedy-Bypass system.  (I've also seen it spelled "Sheedie", so sorry if I slip on consistency here!) - Also some of my research from about 4 years ago some how introduced 'Speedie' or 'Speedy' into the mix.  However after doing a US Patent search, it is pretty clear that Patrick Sheedy patent was granted in the 1911-1912, which expired in 1929.

Unfortunately, the SP never seemed to really have any rhyme or reasoning behind which engines received which version of cylinder block or if the engine was fitted with cylinder end-covers or if they were left off.

One thought I have reflecting on this after finding the patent dates for the Sheedy system is that many of the SP's 2-8-0s were built with other cylinders in the 1900-1910 time frame, possibly the engines rebuilt with piston valves before 1912 received the 'plain' type cylinder blocks and engines rebuilt later received the 'Sheedy By-Pass' type cylinder blocks.  Much more research will be needed to try to nail down why certain engines received the By-Pass type cylinders, while sister engines did not have it.

Grand Canyon 539 with her cylinder jackets off shows what the internals of the plated over Sheedy Bypass looks like.

Close up of the Grand Canyon Rwy 539's cylinder block. both 2018 photos by Jason Hill 

Closeup of SP 2564's plated over Sheedy By-pass valves - OMM's 4014. Note blower feed valves above cylinder. - Eddie Sims collection

The majority of the problems seem to be the valves sticking and allowing the power stroke to be vented out the stack instead!  This kills 25% of your cylinder strokes per driver revolution.  The SP went so far as to issue field instructions to engine crews to determine which by-pass valve was sticking, based on the exhaust out the stack, etc.  The instructions even include what happens if you get TWO by-pass valves sticking!  The instructions state that if both valves on one side of the engine are sticking, there is no way to determine in the field if the problem is a result of both valves on that cylinder being stuck.... or if the packing glands on that piston have been blown out.

Q&A in the 1910 LFEM Vol 48, with a long explination of the Sheedy By-Pass system - Q&A # 1126 - Google Books search result.

The 1910 Locomotive Fireman & Engineer's Magazine (Volume 48, page 803) covers a Q&A with a long explanation of how to trouble shoot problems with the Sheedy By-Pass system.  (I'm not sure why the patent for this system was applied for in 1911-1912, but they're already referring to it as the 'old system' in the article. - Perhaps the 'old version' was an early version of the system, or that I found a 'later' patent for the 1911-1912 era.)

By the late 1920s, photos show the Sheedy By-pass Valves are removed and the triangular openings in the cylinder blocks are plated over.  These cylinder blocks with their distinctive 'bulged' sides stayed on most of the engines so fitted until their were scrapped.  Obviously, once they were plated over they caused no further problems or expense that would justify casting a new set of cylinder blocks.

Prototype Information on Classes & Notes

This is the list of photos from books that I'm using to make my modeling notes.  I might spend some time creating a spreadsheet with this info and expanding to other books ans sources as well.  The photos in this post are all from Eddie Sims collection.

Notes on photo reference books:
*A = Jeff Ainsworth SP Steam Series Vol.21 + Page #
*B = Jeff Ainsworth SP Steam Series Vol.3 + Page #
*C - Jeff Ainsworth SP Steam Series Vol.31 + Page #
*D - Rod Crossley's Chasing the SP in CA - 1953-1956 +Page #
*E - John Hungerford & Harold Stewart - SPHTS's Southern Pacific Golden Empire 1954-1958 +Page #

C-8 Class

SP 2718 with 100-C-series tender (WSM), forward blowdowns, 4010 cylinders. - Eddie Sims collection

SP 2694-2751 - 58 Engines

Many of this group were superheated.  A number were sold off to UP and others leased to NWP or SPdeM.  The remainder stayed assigned to the SP Pacific Lines.  The UP modelers may wish to look into modeling the 350-class.

Engine History of Note:

SP 2694 sold to UP #350 2-15-10
SP 2695 sold to UP #351 3-5-10
SP 2696 sold to UP #352 3-9-10
SP 2697 sold to UP #353 3-27-10
SP 2699 sold to UP #355 2-24-10
SP 2701 Leased to SPdeM 4-22-48 to 6-2-48
SP 2705 Leased to SPdeM 4-2-51, sold to FdelP 625 12-21-51
SP 2708 Leased to NWP 7-20-34 to 10-25-51 Vac 5-15-52
SP 2711 Leased to SPdeM 4-11-49, Sold to FdelP #626 12-21-51
SP 2714 leased to SPdeM 3-14-44 to 8-16-48
SP 2716 Leased to SPdeM 10-16-51. Sold to FdelP 627 12-21-51
SP 2719 leased to SPdeM 3-7-51 sold FdelP #628 12-21-51
SP 2720 sold to SD&AE 104 3-25-21, returned to SP 5-21-41. Re-#SD&AE 104, 9-48.  Vac 10-18-54, donated to Railway Historical Society of San Diego displayed at Del Mar, CA 5-56-56. Moved to PSRMA, Campo, CA 7-83.
SP 2726 sold to UP #356 4-8-10, also repainted for UP 356 during worlds fair St. Louis 1905
SP 2732 leased to NWP 4-25-50 to 12-17-52, Vac 1-22-53.
SP 2734 fitted with Worthington 3-B FWH 7-26-23 at Sparks
SP 2737 sold to UP #357 4-11-10
SP 2738 sold to UP #358 4-8-10
SP 2743 SPdeM 12-29-38 to 5-18-42 sold to FdelP #629 12-21-51
SP 2744 sold to UP #354 4-12-1910
SP 2750 reclassified as C-10 August 1929 Tuscon, AZ.

Engine Photos with Modeling Notes

SP 2704 90-R-7 tender, 1937 LA - *B37
SP 2705 90-R-7 tender 1940 RV - B-38\
SP 2724 90-R-7 tender mar 13,53 LA - Stan Kistler photo - 4010 cylinders, high running boards, simple pilot & steps, rear blowdowns. *B43
SP 2730 Left Tracy Yard March 18, 1956 John Hungerford - 4013 cylinder, 120-C-7 tender. *D36
SP 2734 left LA, CA - June 9,51 - FWH, 90-C-series (Bachmann), 4010 cylinders. *C31
SP 2734 Left & Left Rear SLO-Guadalupe June 14, 1956 - Rod Crossley - 90-R-7 tender, 4010 cylinders. *D50 & *D51
SP 2740 Left Bakersfield, CA Late 1930s - 72-SC-series tender, high old headlight on Smokebox, 4014 cylinders. *C33
SP 2745 Alturas,CA Late 1930s, 4014 cylinders, 100-C-1/2 tender *C35
SP 2745 Eugene, OR July 24,54 - 4013 cylinders, 100-C-1/2 tender *C36

SP 2746 with 90-R-7 tender (Bachmann with OMM 4017 conversion), 4013 cylinders, rear mounted blowdowns. - Eddie Sims collection

SP 2746 Oakland, CA Nov 10,56 - 4013 cylinders, 90-C-series (Bachmann) *C37
SP 2746 LAGS, CA Feb 22, 1954 - Rod Crossley - 4013 cylinders, 90-C-tender (Bachmann)
SP 2746 left front Taylor Yard, CA April 16, 1954 - Rod Crossley - 4013 cylinders, 90-C-tender (Bachmann)
SP 2749 LA, CA early 1950s - 4013 cylinders 100-C-1/2 tender *C39
SP 2750 BS, CA sept 11,39 - 4014 cylinders, 100-C-series tender *C40
SP 2750 Bakersfield, CA Jan'53 - 4010 cylinders, 100-C-1/2 tender, elbow stack. *C41
SP 2750 Lancaster, CA July 2, 1953 - Rod Crossley - 100-C-1/2 tender, 4013 cylinders elbow stack, rear blowdowns. *D166

C-9 Class

Pre-1946 SP 2564 with 70-C-10 tender (Sunset), 4014 cylinders, new Sunbeam HL. - Eddie Sims collection

SP 2513-2599 - 86 Engines

Built between 1-1906 and 7-1907 at Baldwin (oddly in roughly reverse order to their numbers!)

Engine History of Note:

SP 2513 Leased to SPdeM 1-10-46 to 4-4-49, leased to NWP 10-31-49 to 5-16-53, Vac 9-24-58
SP 2514 Leased to NWP 8-5-36 to 11-19-51
SP 2517 Leased to NWP 2-5-50 to 11-21-52, Vac 3-19-53
SP 2519 Leased to SPdeM 10-20-43 to 5-15-44, sold to FdelP #617, 12-21-51
SP 2520 Leased to SPdeM 3-11-48 to 6-4-48, Vac 11-10-53
SP 2523 Sold to SD&AE #103 3-17-21
SP 2524 Leased to NWP 2-27-50 to 6-13-53, Vac 9-19-55
SP 2525 Leased to SPdeM 12-29-38 to 6-8-45, Vac 2-26-54
SP 2527 Leased to NWP 2-27-50 to 12-31-51 Vac 12-10-57 Fresno
SP 2529 Leased to SPdeM 4-3-51 Sold to FdelP #618 12-21-51
SP 2530 Leased to NWP 8-19-37 to 8-10-53, Vac 9-2-54
SP 2531 Leased to NWP 6-5-46 to 2-26-52, Vac 9-19-55
SP 2534 Leased to SPdeM 12-29-38 to 4-21-39, Leased to OUR&D 3-13-42 to 10-9-44, Vac 2-7-57
SP 2535 Leased to NWP 7-24-34 to 10-6-51, Vac 12-28-51 Bakersfield
SP 2541 Leased to NWP 7-30-52 to 7-30-53, Vac 11-24-54
SP 2544 Leased to SPdeM 1-24-44 to 12-13-44 Vac 10-6-54
SP 2548 Leased to SPdeM 2-8-46 to 5-20-46, Vac 2-8-55
SP 2550 Leased to SPdeM #606 4-22-24, Re# SP 2550 5-28-42 returned 6-3-42, Vac 4-20-54
SP 2551 Leased to NWP 12-11-49 to 11-3-50, Vac 1-22-53
SP 2552 Leased to SPdeM #607 4-21-24, Re# 2552 5-29-42 returned 6-3-62, Vac 10-29-53
SP 2555 Leased to SPdeM 4-4-51, Sold FdelP #619 12-21-51
SP 2556 Leased to NWP 2-17-50 to 6-25-51, Vac 6-25-54
SP 2559 Leased to SPdeM 4-4-51, sold FdelP #620 12-21-51
SP 2560 Leased to SPdeM 4-4-51, sold FdelP #621 12-21-51
SP 2561 Leased to NWP 8-6-36 to 9-27-50, Vac 8-31-51
SP 2564 Leased to NWP 8-6-50 to 8-31-53, Vac 12-23-53
SP 2566 Leased to NWP 7-10-34 to 11-10-35, Vac 9-27-56
SP 2570 Leased to SPdeM 1-8-46, Sold to FdelP #622 12-21-51
SP 2571 Leased to NWP 2-25-50 to 9-24-51, Vac 3-19-53
SP 2573 Leased to NWP 8-18-37 to 3-14-46, Leased to SPdeM 3-19-46 to 11-9-50, Vac 1-4-51
SP 2578 Leased to SPdeM 12-20-43 to 4-28-44, Vac 10-17-51
SP 2579 Vac 5-2-57 W.Oakland, donated to Klamath Falls OR 9-8-57
SP 2580 Leased to NWP 6-10-39 to 4-19-46, Vac 6-26-52
SP 2582 Leased to NWP 6-12-39 to 8-31-53, Vac 9-24-58 Fresno
SP 2587 Leased to SPdeM 2-18-44 to 7-7-44, Vac 11-14-56 WO
SP 2593 Leased to NWP 10-27-47 to 5-13-50, Vac 1-18-57 WO FWH 6-27-23 Sac, off 6-28-48 Tib
SP 2594 Leased to SPdeM 1-2-39 to 9-25-44, Leased again 4-21-48, sold FdelP #623 12-21-51
SP 2599 Leased to SPdeM 5-29-50, Sold to FdelP #624 12-21-51

Engine Photos with Modeling Notes

Pre-WWII SP 2532 with 90-R-1/2 tender, large barreled HL, no blowdowns, 4011 cylinders. Note whited yoke. Eddie Sims collection

SP 2513 left front Jan,54, Burlingame, CA - Barry Anderson photo & collection - reversed S-dome & bell, 4010 cylinders, rear blowdowns, Athearn-Genesis 120-C-6 tender, stepping forward running boards from high to mid, like Bachmann engine. *B11
SP 2516 Left RV, CA, Sept 1,40 - Allan Youell photo - 4014 cylinders, 100-C-1/2 tender *B12
SP 2521 Right SF, CA 1954 - Doug Richter photo, Alden Armstrong collection - 120-C-2 tender, low running boards, with very low boards around cylinder pipe. *B13

SP 2527 with 100-C-series tender (WSM), 4010 cylinders, forward blowdowns. No visor on the headlight. - Eddie Sims collection

SP 2527 Left - 100-C-1/2 4010 cylinders, Eugene, OR, 1949 - Dick Wolfe photo, Alden Armstrong collection,. *B14
SP 2534 Left June'55 - Rod Crossley - 70-C-9, 4010 cylinders. *D24

SP 2547 with 70-C-9 tender (Sunset), 4010 cylinders, forward blowdowns. - Eddie Sims collection

SP 2547 with 70-C-9 tender, 4010 cylinders, forward blowdowns. - Eddie Sims collection

SP 2550 left side Nov1,52 El Paso, TX - Brian Leppert collection (OMM 4011 cylinders, both shots - Rear blowdowns, 100-C-series tender, fwd cab window!) *A10
SP 2550 right side Oct 30,53 Modesto, CA - Guy Dunscomb photo - Brian Leppert collection *A11
SP 2551 left side Aug 30,49 Port Chicago, 100-C-series tender, OMM 4010 cylinders - Brian Leppert collection *A12
SP 2552 left front Jan 27,52 Bakersfield, CA - Brian Leppert collection - 4013, FWH, a/c right side, fwd blowdowns, 100-C-tender, front tool box, fwd cab windows, Elbow deflector, *A13
SP 2552 left front Mar11,53 Portland, OR - Paul Koehler collection - 4013, FWH, a/c right side, rear blowdowns, fwd cab windows, 120-SC-tender, no smk deflect. *A14
SP 2553 left 1954 Oakland, CA? - Cliff Wagner collection - 4013, pump left, elbow smk deflector, 100-C-1/2 tender, fwd blowdowns. *A15
SP 2554 right front 1954 Bay Shore - Doug Richer photo - Alden Armstrong collection - 4010 cylinders, fwd power reverse, aft pointed, 90-C-series tender - low walkways. *A16
SP 2555 right side, Feb 14,47 LA,CA - Frank Peterson, Robert Kern collection. - Old headlight, 70-C-9 tender (switcher, clear-view type), rear blowdowns, left a/c, fwd power reverse, aft pointed. - Sold to FdelP #619 12-21-51. *A17
SP 2556 right front Late 1930s, LA, CA - Gerald M Best photo, Paul Koehler collection - old headlight, 4014 cylinders (Sheedy-plated & covers), 90-R-7 tender (OMM 4017 conversion), fwd cab windows, no indicators on brackets, no blowdowns yet. *A18

SP 2557 with 4010 cylinders, 90-C-series tender (Bachmann). - Eddie Sims collection

SP 2557 leading a freight 4010 cylinders, 90-C-series tender (Bachmann). - Eddie Sims collection

SP 2557 left front June 26,40 Mojave, CA - Lewis Harris photo, Robert Kern collection - 4014 cylinders (Sheedy-plated & covers), 90-C-series tender, left a/c, large old headlight, covered fwd cab window, no blowdowns yet. *A19
SP 2557 left front  1949 LA,CA - Robert Kern collection - elbow smk deflector, 4010 cylinders (no covers, plain block), 100-C-series tender, rear blowdowns, Sunbeam HL. *A20
SP 2557 Right Front July'54, SLO - Barry Anderson photo & collection - 4010 cylinders, 100-C tender, etc. *B21
SP 2557 - left front SLO June 4, 1953 - Rod Crossley - 4010 cylinder, 100-C-series tender. *D35
SP 2562 - Left West Oakland Feb 3, 1956 - Rod Crossley - 4010 cylinder, 100-C-series tender. *E17

SP 2582 with a dirty 100-C-1/2 tender (Balboa Mk-5/6), 4013 cylinders, mid-rear blowdowns. - Eddie Sims collection

SP 2582 Right Front Jan 2,55 Bakersfield,CA - John E. Shaw, Jr. photo & collection - 4013 cylinders, 100-C-1/2 tender (Balboa with Andrews trucks), fwd mounted power reverse, aft pointed. *A46
SP 2582 Left Front Aug 12,56, Fresno,CA - John E. Shaw Jr. photo & collection - 4013 cylinders, flat running board, high mounted, rear blowdowns, 100-C-1/2 tender still in use, pressed stl switcher pilot with footboards front and rear. *A47

SP 2583 with 90-R-1/2 tender, probably 4010 cylinders, weird spacing of cab numbers. - Eddie Sims collection

SP 2583 Left Rear - SLO,Ca April'54 - Rod Crossley - 90-R-1/2 tender, 4010 cylinders (probably). *D41

SP 2583 Left Front - LA, CA 1942 - Gerald M. Best, Paul Koehler collection - C-type tender, low running boards, short stack, no blowdown mufflers, 4010 cylinders. *A48

SP 2583 Right Front - Bayshore, CA 1954 Doug Richter photo, Alden Armstrong collection, 4011 (covers removed), 90-R-1/2 tender blowdowns installed, Standard tall stack. *A49

SP 2583 Left Side - Fresno, CA July 4, 1955 John E Shaw, Jr photo & collection - (same technical data as Doug Richter photo *A49) *A50

SP 2592 with 73-SC-series whaleback tender, 4011 cylinder, forward blowdowns. - Eddie Sims collection

SP 2592 Left Rear - SLO, CA Jan 29, 1954 - Rod Crossley - 72-SC-whaleback tender with rear footboards, 4010 cylinder, forward blowdown. *D34, *D31
SP 2593 Left Rear - SLO,Ca April'54 - Rod Crossley - 70-C-9 tender, 4010 cylinders *D41

SP 2599 with 4011 cylinders, 70-C-9 tender (Sunset). Note the gondola with lumber behind the tender. - Eddie Sims collection

SP 2752-2830 (2nd) - 78 Engines

Earlier SP 2757 with low front running boards, 4010 cylinders, & 90-C-series tender (Bachmann) - Eddie Sims collection

Engine History of Note:

Many of these engines were the second engine to carry this number after 1901.  All were superheated during the 1916-1922 years.  Some had Worthington 3-B FWHs (SP 2758, 2787, & 2789 had Worthington 3L-B FWH) installed in the 1920s and many were removed in the early 1952-53 timeframe.  Various engines were leased to NWP or SPdeM over the years.

SP 2799 FWH *B55
SP 2803 FWH *B57

Engine Photos with Modeling Notes

SP 2752 Right front Nov'54, SJ, CA - Barry Anderson photo & collection - 4010 cylinder, 100-C-series tender, lightly stepping front running boards, simple pilot, fwd blowdowns, no fwd cab windows. *B48 *D19
SP 2754 Calexico, CA Jan 12, 1956 - Harold Stewart - 4013 cylinder, 100-C-series tender. *E192 (color)

Later SP 2757 with 70-C-9 tender (Sunset), 4011 cylinders with covers, forward mounted blowdowns - Eddie Sims collection

SP 2757 LA,CA Jan'49 - 70-C-9 tender, 4011 cylinders, low front running boards around cylinder pipes. *C45
SP 2757 BS,CA 1954 - 90-C-tender, 4010 cylinders, low front RB around Cylinder pipes. *C46
SP 2758 BS April 23,53 Left side - 90-C-tender (Bachmann) 4010 cylinders, (steam dome cover off while being shopped). *C47
SP 2758 BS Aug 16,53 Right side 90-C-tender (Bachmann) 4010 cylinders *C48
SP 2760 Left & Right photos July'55 & early'56 LA & BS 70-C-9 tender, 4010 cylinders *C51 & *C52
SP 2777 Left front April'54 San Mateo, CA - Barry Anderson photo & collection - 4010 cylinders, Athearn-Genesis 120-C-6 tender, rear blowdowns. *B53
SP 2784 - SLO May 1954 - Rod Crossley - 90-R-7 tender, 4011 main cylinder, 4010 piston valve covers (cross between 4010/4011 cylinders), forward blowdown, *D33, D31
SP 2791 - SLO Oct'53 - Rod Crossley - 100-C-1/2 tender, 4010 cylinder. *D33

SP 2803 with 4010 cylinders, 100-C-series tender, rear blowdowns - Eddie Sims collection

SP 2803 - SLO roundhouse 1953 - Rod Crossley - rear of tender shown 90-C-tender (Bachmann).  *D19

SP 2827 leads a freight west past the depot at Bakersfield.  Eddie Sims collection

SP 2827 - Bakersfield, CA Sept'55 - 90-C-tender (Bachmann), 4013 cylinders. *B58
SP 2827 - Left side - Fresno, CA June'56 - Rod Crossley - 4013 cylinders, 90-C-tender (Bachmann), forward blowdown. *D192
SP 2827 - Right front - Fresno, CA 2-784 - Rod Crossley - 4013 cylinders, 90-C-tender (Bachmann) double head with 4308. *D189
SP 2829 - Front - SLO-Guadalupe - Rod Crossley - 4013 cylinders, 90-R-7 tender *D50, *D30, *D19

SP 2858-2860 - 3 Engines

These three engines were ex-Arizona Eastern 671, 672, & 668 respectively.  For more information, see Diebert & Strapac's Southern Pacific Steam Locomotive Compendium.  Vacated 8/53, 4/54, 9/54 respectively.  SP 2860 was leased to SPdeM 1/47-6/48.

C-10 Class

SP 2834 working a Suntan Special to Santa Cruz. - Eddie Sims collection

SP 2831 (2nd) - 2836 (2nd) - 5 Engine

This group was built in 1911 and was superheated between 1917 and 1920.

2832 (2nd) Leased to SPdeM 3-2-47 to 12-21-51, returned to SP and vacated 3-31-52.

2834 (2nd) had Worthington 3-B FWH mounted 2-3-23 and removed 10-8-51.

2836 (2nd) was leased to NWP from 6-18-43 to 9-28-43.

Engine Photos with Modeling Notes

SP 2836 Tender rear SLO,  1953 - Rod Crossley - 90-C-tender (Bachmann) probably.  *D19

SP 2837 (3rd) - SP 2838 (3rd) - 2 Engines

These two engines came from Arizona Eastern as their #669 & 670 respectively in 1924.  Both were fitted with Worthington 3-B FWHs in 1927.  SP 2837 had its FWH removed on 3-11-54 at Bay Shore.

SP 2839 (2nd) - SP 2857 - 8 Engines

These engines were built using boilers from other SP engines or new boilers built at SP Shops during 1917 and 1918 to avoid being assigned USRA engines.
Previous boilers used include: 2530, 2588, 2702, 2750, 2710, 2654, 2685, 2673, & 2564.  Three boilers were built at Ogden.

Five engines (2839, 2847, 2850, 2852, and 2854 had Worthington 3-B FWH's added in 1923-1924.  The 2850 and 2852 had the FWH's removed in 1953 and, 2854 had its FWH removed in 1951.

SP 2842 was leased to NWP from 3-25-1950 to 8-31-1953 before being vacated from the roster on 10-6-54.

SP 2843 & 2844 were sold to SD&AE as 105 & 106 in 1921.  The SD&AE 106 was leased back to the SP in 1940 and relettered as SP 2844 on 5-22-1941 in LA.  Then back to SD&AE on 10-11-48 and repainted back to #106.

SP 2849 was leased to SPdeM on 10-26-51 and sold to SPdeM on 12-21-51 to become FdeP 636.

Engine Photos with Modeling Notes

SP 2845 - Bakersfield, CA - Rod Crossley -  (2-photos) - 100-C-tender, 4010 cylinders, rear blowdowns. *D175
SP 2850 - LA,CA Unk date - 100-C-1/2 tender, 4010 cylinders. *B62
SP 2851 - Bakersfield, CA Dec 30, 1953 - Rod Crossley - 100-C-1/2 tender, elbow smoke deflector. *D169 *E125

SD&AE 2-8-0 - 2 Engines New

SD&AE 101 & 102 were built in 12-1914 and leased to the SP in 1917 until 1919 as SP 2837 (2nd) & 2838 (2nd) before returning to the SD&AE.

SD&AE 103 (ex-SP 2523) C-9 class
SD&AE 104 (ex-SP 2720) C-8 class

SD&AE 105 (ex-SP 2843 - See above)
SD&AE 106 (ex-SP 2844 - See above)

Engine Photos with Modeling Notes

SD&AE 103 Left front - Near Glendale CA, Aug 2, 1940 - Otto Perry photo Denver Public Library - 4014 cylinders, 90-C-tender.
SD&AE 103 Left side SLO Aug 22,1953 - Rod Crossley - 4010 cylinder, 90-C-tender (Bachmann) *D13
SD&AE 103 rear right - SLO Rod Crossley -  90-C-tender (Bachmann) *D62, *D19
SD&AE 103 rear left - SLO Rod Crossley - 90-C-tender (Bachmann), 4010 cylinders *D34 & *D35
SD&AE 103 Left side - SLO - Harold Stewart - 4010 cylinder, 90-C-tender (Bachmann) *E156
SD&AE 105 Right side LA Feb 26, 1956 - Harold Stewart - 4010 cylinder probably, 100-C-tender

T&NO C-class

The T&NO also had 2-8-0s of the C-8 & C-9 classes.  The C-8 class engines were built in 1904, followed by the C-9 class engines in 1905, 1906, and 1908.

C-8 Class - T&NO 800-807 (8 Engines)

T&NO 800, 803, 805 received FWH ~1925.
T&NO 802 Sold to SPdeM #601, 2-3-1950.

C-9 Class - T&NO 808-857 (50 Engines)

T&NO 808, 810, 813, 916, 817, 827, 830, 833, 836, 839, 843, 845 FWH on ~1925.
T&NO 833 FWH off at Houston 11-16-47

T&NO 828 Sold to UP 332, 9-13-1910, Re# 6332, Vac 6-58
T&NO 831 Sold to UP 333, 9-13-1910, scrapped 1937
T&NO 850-857 to PL 2-1910, sold to UP in 8-1910 becoming UP #324-331.

Photos of T&NO Engines

T&NO 812 photo in SP Steam Compendium - Diebert & Strapac from 1947 at Houston with 4014 cylinders with covers and 70-C-series tender with wide bunker (MDC-Vandy).
T&NO 818 Houston, Oct 1939 - Ainsworth SP Steam series Vol 31 Pg57.
T&NO 822 Franklin, Louisiana, May 1942.- Ainsworth SP Steam series Vol 31 Pg58.
Jeff Ainsworth's SP Steam series Vol 21 also has photos of T&NO 808-838 series.
825 Late 1938 Galveston TX? - 4011 cylinders 90-C-series tender (Bachmann) pg7
829 Sept 1938 Enright TX - 4014 cylinders, 70-C-series (MDC) pg8
838 Late 1930s Houston TX - 4011 cylinders, 70-C-10 (Sunset Models) pg9

In Closing

OMM 4013 cylinders & 4012 rods prototypes installed on a Bachmann starting to make an SP C-class with brass FWH

I'll be doing a couple more posts along this line as these models from OwlMtModels come in and work through the conversion building one.

Related Articles:

Modeling SP Road Switchers (Part 1) - Small Steam Engines

SP Tender Swapping (Part 1)

Kitbashing a 70-C-9 tender from MDC 'Vandy' Tender - by Jake Abel