Alexander Seal

Class 123 Swindon Inter-City Diesel Multiple Units

Introduction

Leyland Albion 230hp

B4 Bogies B5s on power cars.

63ft 5in over headstocks
46ft 6in bogie centres
67ft 1in over buffers (extended)
65ft 11in over buffers (retracted)
64ft 11½in over body panels
66ft 2in centre coupled

Numbering Class Type Seating Weight No. Introduced Diagram Lot. No  
1st 2nd Buffet
W52086 - 52095 123/2 DMBS(L) 0 32 0 41 tons 14 cwts 10   566 30703 261/262/263/278/283
W 52096 - 52105 123/1 DMSK(L) 0 56 0 41 tons 9 cwts 10   574 30704 270/271/272/279/283
W 59818 - 59827 183 TCK(L) 24 24 0 32 tons 3 cwts 10   567 30705 264/265/266/280
W 59828 - 59832 184 TSRB 0 32 8 33 tons 5 cwts 5   569 30707 267/268/269/280
W 59235 - 59239 182 TS(L) 0 64 0 31 tons 9 cwts 5   568 30706 255*/256/257/280/284

Modelling

For two units:

Motor

70mph top speed

Motor RPM x Wheel Dia. (mm) x 0.018 / Prototype Speed (mph) = Gear Ratio

35000 x 7 x 0.018 / 70 = 63