Victorian Government Rlys Beyer-Garratt Locomotives in Australia
Class Details by Steve Llanso of Sweat House Media
Class G (Locobase 534)
Data from Wiener, Articulated Locomotives (1930); and "Victorian Government Railways-Design 117", Beyer-Garrrat Patent Articulated Locomotives (Manchester, England: Beyer-Peacock & Company Limited, 1931), archived on flickr's Historical Railway Images at [
], et seq, p. 18. Works numbers were 6267-6268 in 1926.
Double Mogul Garratts nicknamed Puffing Billy and used on Victorian Rwys branch lines (26-mile Moe-Walhalla) Railway and the 44-mile Colac Crows Railway) with 60-lb rail climbing gradients of 1 in 30 (3.33%) and very tight curvatures. Locobase looked at the builder's photo and saw a squared off cab, bunker, and water tank whose proportions lacked the grace visible in most other Garratts.
G41 lasted until 1960, when it was scrapped. G42, which had been overhauled in 1954 when it was moved from Moe-Walhalla to Colac Crows, went into storage in 1962.
NB: Tube length is an estimate based on the calculation of tube surface area by subtracting reported firebox heating surface from reported total evaporative heating surface
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | G |
| Locobase ID | 534 |
| Railroad | Victorian Government Rlys |
| Country | Australia |
| Whyte | 2-6-0+0-6-2 |
| Number in Class | 2 |
| Road Numbers | G41-G42 |
| Gauge | 2'6" |
| Number Built | 2 |
| Builder | Beyer, Peacock |
| Year | 1926 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 13.50 / 4.11 |
| Engine Wheelbase (ft / m) | 24.60 / 7.50 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.55 |
| Overall Wheelbase (engine & tender) (ft / m) | 44.50 / 13.56 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 21,168 / 9602 |
| Weight on Drivers (lbs / kg) | 121,520 / 55,121 |
| Engine Weight (lbs / kg) | 154,672 / 70,158 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1680 / 6.36 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 34 / 17 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 36 / 914 |
| Boiler Pressure (psi / kPa) | 184.20 / 1270 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 13.5" x 18" / 343x457 (4) |
| Tractive Effort (lbs / kg) | 28,535 / 12943.27 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.26 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 160 - 1.75" / 44 |
| Flues (number - dia) (in / mm) | 21 - 4.75" / 121 |
| Flue/Tube length (ft / m) | 9.67 / 2.95 |
| Firebox Area (sq ft / m2) | 99 / 9.20 |
| Grate Area (sq ft / m2) | 22.60 / 2.10 |
| Evaporative Heating Surface (sq ft / m2) | 1049 / 97.46 |
| Superheating Surface (sq ft / m2) | 219 / 20.35 |
| Combined Heating Surface (sq ft / m2) | 1268 / 117.81 |
| Evaporative Heating Surface/Cylinder Volume | 175.89 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 4163 |
| Same as above plus superheater percentage | 4871 |
| Same as above but substitute firebox area for grate area | 21,336 |
| Power L1 | 6514 |
| Power MT | 709.06 |