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Record: 10235 (26/09/2023)
(Free MySQL Counter)
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NBR/LNER Holmes "D25" Class 4-4-0
Power
Variant Introduced |
1886 |
Tractive Effort |
12,786lbs |
Inside Cylinders |
18" x 26" (2 off) |
Inside Valves |
Slide |
Inside Motion |
Stephenson |
Wheels
Pony |
3' 6" |
Drivers |
7' |
Locomotive Wheelbase |
22' 4" |
Tender Wheelbase |
12' |
Total Wheelbase |
43' 73⁄4" |
Descriptive Wheelbase |
6' 6" + 6' 7" + 9' 3" + 9' 3¾" + 6' 0" + 6' 0" = 43' 7¾'" |
Dimensions
Length (over buffers) |
53' 01⁄4" |
Weight (in running order) |
78t 4cwt |
Weight (loco only) |
46t 4cwt |
Adhesive Weight |
31t 17cwt |
Maximum Axle Load |
17t 2cwt |
Water Capacity |
2,500gal |
Coal Capacity |
4t 0cwt |
Boiler & Firebox
Boiler Diagram |
82 |
Boiler Max Diameter |
4' 4" |
Boiler Min Diameter - tapered boiler |
10' 31⁄2" |
Boiler Barrel Length |
10' 31⁄2" |
Boiler Pressure |
150lbs |
Firebox Length |
6' 6" |
Firebox Grate Area |
20.3ft2 |
Firebox Heating Surface |
116.5ft2 |
Tube Number |
203 |
Tube Diameter |
13⁄4" |
Tube Area |
989.68ft2 |
Total Evaporative Area |
1106.18ft2 |
Total Heating Area |
1106.18ft2 |
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