Grand Trunk classes E-8 and E-12
Canadian National class E-10-a
To replace light 4-4-0 and 2-6-0 locomotives on branch lines, the Grand Trunk put 25 locomotives of the class E-8 into service in 1910. They were built by the Canadian Locomotive Co. and compared to the E-7 they still had 63 inch drivers, but were lighter. In 1913, 24 were superheated, got cylinders with a diameter of 21 instead of 19 inches and were now designated class E-12.
In 1923 they became class E-10-a of the Canadian National and were retired between 1930 and 1960. The locomotive shown on the photo is No. 89 that was originally numbered 1009. After its retirement it came to collector F. Nelson Blount in 1961 and was refurbished. It came to the Strasburg Railroad in 1972 and is in regular service until today. Meanwhile, it had been completely rebuilt to its former Canadian National appearance in the eighties.
Technical data
General
| Property | E-8 | rebuilt E-12 |
|---|---|---|
| Built | 1910 | 1913 |
| Manufacturers | Canadian Locomotive Co. | |
| Wheel arrangement | 2-6-0 (Mogul) | 4-6-0 (Ten-wheeler) |
| Gauge | 1,435 mm (Standard gauge) | |
Dimensions and weights
| Property | E-8 | rebuilt E-12 |
|---|---|---|
| Wheelbase | 6.88 m | |
| Total wheelbase | 16.60 m | 15.13 m |
| Service mass | 64.3 t | |
| Adhesion mass | 54.7 t | |
| Total mass | 122.4 t | |
| Rigid wheelbase | 4.27 m | |
| Axle load | 18.2 t | |
| Water capacity | 22,731 l | |
| Fuel capacity | 10.2 t (coal) | |
| Empty mass | 59.5 t | |
Boiler
| Property | E-8 | rebuilt E-12 |
|---|---|---|
| Grate area | 2.861 m² | |
| Firebox surface | 14.883 m² | 15.422 m² |
| Tube heating surface | 128.466 m² | 72.464 m² |
| Evaporative heating surface | 143.35 m² | 87.886 m² |
| Total heating surface | 143.4 m² | 106.5 m² |
| Superheater surface | 18.581 m² | |
Power plant
| Property | E-8 | rebuilt E-12 |
|---|---|---|
| Driver diameter | 1,600 mm | |
| Boiler pressure | 12.4 bar | 11.7 bar |
| Expansion type | simple expansion | |
| Cylinders | two, 483 x 660 mm | two, 533 x 660 mm |
Power
| Property | E-8 | rebuilt E-12 |
|---|---|---|
| Power source | steam | |
| Estimated power | 652 kW (886 PS) | 597 kW (812 PS) |
| Starting effort | 101.4 kN | 117.0 kN |
Calculated values
| Property | E-8 | rebuilt E-12 |
|---|---|---|
| Factor of adhesion | 1 : 5.29 | 1 : 4.59 |
| Optimal speed | 39 km/h | 31 km/h |
| Power-to-weight ratio | 10.1 kW/t | 9.3 kW/t |
| Heating Surface Equivalent | 217.8 m² | 202.2 m² |
| Cylinder volume/HSE | 1 : 1,109.47 | 1 : 1,459.96 |
| Adhesive weight/Total | 1 : 1.18 | |
| Tractive force/Heating surface | 1 : 14.77 | 1 : 22.95 |
| Grate area/Heating surface | 1 : 50.10 | 1 : 37.21 |
| Firebox/Tube surface | 1 : 8.63 | 1 : 4.70 |
| Total/Superheater | 1 : 4.73 | |
