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Gauge 0 wheel castings, by INTERNAL DIAMETERS
or see these castings ARRANGED BY TURNED TREAD DIAMETER
or see the GALLERIES of IMAGES:   PLAIN,   DRIVING WHEELS

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TREAD DIAMETERS are a fairly good guide to wheel size, but remember that due to apparent tyre thickness varying from wheel to wheel by 3 to 5 inches, you will need to refer to the diagrams to find the internal diameters and to see the machining allowances on the castings.

Scales: A = 1:8 (7¼″ gauge),   B = 1:43.54 (7 mm/ft),   C = 1:45,   E= 1:13.26,   H = 1:24 (1/2"=1 foot),   K = 1:20.32 (15 mm/ft),   N = 1:16 (3½″ Gauge), P = 1:32,   T = 1:30.5 (10 mm/ft),   V = 1:11.29 (5" Gauge)   X = 1:22.6 (Gauge 3)

B18, B19, B20, B35, B36, B37, B38, B41, B42, B43, B44, B51, B55, B56, B60, B64, B65, B66, B74, B79, B80, B81, B111, B113, B149, B159, B185, B292, B310, B327, B339, B340, B341, B351, B352, B353, B374, B375, B382, B383, B384, B385, B394, B395, B407, B408, B409, B410, C252, C253, C254, C255, C256, C348, C349, C350, C368, C370, C371, C372, C373, C386, C387, C388, C389, C390, C391, C392, C393, C397, C398, C399, C411, C412,

Finding the right casting size if you know the apparent tread.

Look for the casting i/d which matches your model diameter on the tread (the normal nominal o/d), less TWICE the apparent tread at your scale.

Example: 5'0" nominal dia. wheel with a 3½ inch apparent tread at a scale of 1:32.
Model dia on tread = 47.6 mm, twice the apparent tread = 5.6mm, so your target casting internal dia is 42.0 mm.

There is some variation in the castings, but the measurements are usually accurate within ± 0.1 mm.

CASTING Dia.
Proto.
Spokes Plain
or
driver
Pin Cast
wts
Tread
dia
mm.
Casting
i/d
mm.
Wheel data
with image
Stock
C 349 1' 11½" 7 oval spokes Plain - - Switzerland. Furka 2-6-0T Rack Loco. 13.3 10.5 Wheel data Stock
B 19 3' 0" 10 oval spokes Plain - - GWR King bogies 21.0 16.2 Wheel data Stock
B 35 3' 0" 9 oval spokes Plain - - LMS bogie, thicker tyre than BR No 74. (Vee rim). 21.0 16.2 Wheel data Stock
C252 3' 0" 8 oval spokes Plain - - Netherlands 4-6-0 NS 3700 class bogie. 20.3 16.4 Wheel data Stock
C 390 3' 3" 9 oval spokes Plain - - Netherlands. NS 5500 bogie 22.0 16.4 Wheel data Stock
B 41 3' 2" 10 oval spokes Plain - - LNER A3, B1, V2 bogie 22.2 16.5 Wheel data Stock
B 74 3' 0" 9 oval spokes Plain - - BR bogie. (Vee rim). 21.0 16.8 Wheel data Stock
B 339 3' 1" 9 rect spokes Plain - - LTSR 4-4-2T No 1 class. 21.6 16.9 Wheel data Stock
C 350 2' 11" 11 oval spokes Plain - - Switzerland. Furka 2-6-0T Rack loco. (910 mm) 20.2 17.3 Wheel data Stock
B 80 3' 1" Boxpok Plain - - SR Merchant Navy, West Country, Battle of Britain 21.6 17.7 Wheel data Stock
B 407 3' 0½" 9 rect spokes Plain - - NSWGR 4-4-0 Z12 (C79, C80) bogie 21.3 17.8 Wheel data Stock
B 55 3' 3" 8 rect spokes Plain - - Highland Jones Goods bogie 22.8 18.2 Wheel data Stock
C 393 3' 6" 10 oval spokes Plain - - Netherlands. NS 5500 trailing 23.7 18.2 Wheel data Stock
B 60 3' 3½" 10 oval spokes Plain - - BR tender. (Vee rim). 23.0 18.8 Wheel data Stock
B 113 3' 6" 10 oval spokes Plain - - Caledonian 944 4-6-2T bogies 24.5 18.95 Wheel data Stock
C 399 3' 7½" 10 rect spokes Plain - - Netherlands, NS 3200 tender 24.6 19.1 Wheel data Stock
C 389 3' 4¾" 10 oval spokes Plain - - Austrian BBÖ class 73 tender 23.0 19.6 Wheel data Stock
C 370 3' 7.3" 12 rect spokes Plain - - Netherlands. NS 1000 bogies. 1100 mm 24.4 20.1 Wheel data Stock
B 42 3' 8" 10 oval spokes Plain - - LNER A3, V2 trailing 25.7 20.1 Wheel data Stock
B 51 3' 6½" 10 oval spokes Plain - - LMS Ivatt tender. Vee rim. 24.8 20.2 Wheel data Stock
C 411, 412 3' 7.3" 12 oval spokes Drivers B 9.4" Yes Netherlands. 0-4-0T. NS 8100. 1100 mm. 24.4 20.5 Wheel data Stock
B 66 3' 9" disc Plain - - LNER 4,200 gall tenders for A2/1, B1, B17, D49, J38, J39, K3, K4, O2, V2 26.3 20.8 Wheel data Stock
B 149 3' 8" 10 oval spokes Plain - - GWR carrying wheel 25.7 20.9 Wheel data Stock
B 81 3' 7" Boxpok Plain - - SR Merchant Navy, West Country, Battle of Britain 25.1 21.0 Wheel data Stock
C 368 3' 7.3" 10 oval spokes Plain - - Holland. NS 3700 8 wheel tenders 24.4 21.0 Wheel data Stock
B 36 3' 9" 11 oval spokes Plain - - LMS 4-6-2 Duchess pony. (Vee rim). 26.3 21.4 Wheel data Stock
C 386,7,8 3' 8.1" Disc Drivers 6.3 Yes Austrian BBÖ class 73 24.9 21.8 Wheel data Stock
B 410 3' 6½" 10 rect spokes Plain - - NSWGR 4-4-0 Z12 (C79, C80) tender 24.8 21.8 Wheel data Stock
B 56 3' 9½" 10 rect spokes Plain - - Highland tender 26.5 21.9 Wheel data Stock
C 372 4' 0" 12 rect spokes Plain - - Netherlands 4-4-0 1300 class tender (early). 27.1 23.1 Wheel data Stock
B 353 4' 0" 12 oval spokes Plain - - LBSC tender. 28.0 23.2 Wheel data Stock
B 43 4' 2" 12 oval spokes Plain - - GN/LNER. (=4'1" for thin tyred early tenders). 29.2 23.6 Wheel data Stock
B 44 4' 2" Disc Plain - - GN/LNER. 29.2 23.6 Wheel data Stock
C 253 4' 0" 12 oval spokes Plain - - Netherlands 4-6-0 3700 class tender 27.1 23.9 Wheel data Stock
B 38 4' 3" 12 oval spokes Plain - - LMS tender 29.8 25.0 Wheel data Stock
B 20 4' 1½" 12 oval spokes Plain - - GWR Churchward and Collett tenders 28.9 25.2 Wheel data Stock
B 394, 395 4' 6" 13 rect spokes Driver B 10" Yes Kitson, Taff Vale K,L, M 31.5 27.1 Wheel data Stock
B 159 4' 8½" 15 oval spokes Driver B 14" No LMS Stanier 8F 33.0 27.9 Wheel data Stock
C397, 398 5' 0" 16 rect spokes Drivers IL 10" Yes Netherlands, 0-6-0 NS 3200 class. C397 mid 33.9 28.4 Wheel data Stock
B 351, 2 5' 2" 16 oval spokes Driver IL 12" Yes LNER 0-6-0 J39 36.2 30.8 Wheel data Stock
B 384, 385 5' 3½" 15 rect spokes Driver B 12" Yes HR 4-4-0 Skye Bogie 37.0 31.4 Wheel data Stock
B 292 5' 3" 16 oval spokes Driver B 13" No LMS/BR Ivatt driver 36.8 32.6 Wheel data Stock
C 391, 392 5' 11" 18 oval spokes Driver IL 10" Yes Netherlands. NS 5500 drivers 40.1 34.7 Wheel data Stock
B 408, 409 5' 6½" 18 rect spokes Drivers IL 12" Yes NSWGR 4-4-0 Z12 (C79, C80) class 38.8 35.2 Wheel data Stock
C 254,5,6 6' 0¾" 18 oval spokes Driver B 12" Yes Netherlands 4-6-0 class 700 41.1 36.6 Wheel data Stock
C 348 6' 0¾" 18 oval spokes Driver B 12" Yes Netherlands 4-6-0 class 1200 41.1 36.6 Wheel data Stock
C 371 6' 1.2" 18 rect spokes Driver IL 11" No Netherlands 1000 class. 1860 mm. 41.3 36.8 Wheel data Stock
B 374, 375 6' 0" 20 oval spokes Driver Il 10" Yes NBR 4-4-0 K/LNER D34 drivers 42.0 37.0 Wheel data Stock
B 327 6' 0" 20 oval spokes Driver IL 15" No GWR early Hall 42.0 37.0 Wheel data Stock
B 64, 65 6' 2" 18 oval spokes Driver B 13" Yes LNER P2, V2 43.2 37.4 Wheel data Stock
B 340 - 341 6' 1" 17 rect spokes Driver IL 13" Yes LTSR 4-4-2T No 1 class. 42.6 37.8 Wheel data Stock
B 382,3 6' 3½" 9 rect spokes Driver B12" Yes HR 4-4-0 Loch class 44.0 38.5 Wheel data Stock
B 111 6' 3" 21 oval spokes Driver IL 15" No GWR 4-6-0 Hawksworth County 43.8 38.7 Wheel data Stock
B 79 6' 2" Boxpok Driver B 12" No SR Merchant Navy, West Country, Battle of Britain 43.2 39.2 Wheel data Stock
B 310 6' 8½" 22 oval spokes Driver B 13" No GWR 4-6-0 late Castle 47.0 41.7 Wheel data Stock
B 18 6' 6" 22 oval spokes Driver B 14" No GWR King. Reinforced spokes near pin 45.5 41.9 Wheel data Stock
B 185 6' 8½" 22 oval spokes Driver IL 13" No GWR Star, early Castle, North Star 47.0 41.9 Wheel data Stock
B 37 6' 9" 20 oval spokes Driver B 14" No LMS 4-6-2 Duchess 47.3 42.3 Wheel data Stock
C 373 7' 0" 22 rect spokes Plain - - Netherlands 4-4-0 1300 class (early). Plain hub. 47.4 43.8 Wheel data Stock


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