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Record: 71951 (21/04/2026)
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MSLR/LNER Parker "D7" Class 4-4-0
Class Types
| MLSR Class |
2 |
| MLSR Class |
2A |
| LNER Class |
D7 |
|
|
|
Power
|
2/D7 |
2A/D7 |
| Variant Introduced |
1887 |
1894 |
| Miscellaneous Differences |
|
Coupled wheel journals larger than Class 2 and coiled springs instead of leaf for the driving axles. |
| Tractive Effort |
14,144lbs |
As 2/D7 |
| Inside Cylinders |
18" x 26" (2 off) |
As 2/D7 |
| Inside Valves |
Slide |
As 2/D7 |
| Inside Motion |
Stephenson |
As 2/D7 |
Wheels
|
2/D7 |
2A/D7 |
| Pony |
3' 6" |
As 2/D7 |
| Drivers |
6' 9" |
As 2/D7 |
| Locomotive Wheelbase |
21' 9" |
As 2/D7 |
| Tender Wheelbase |
13' |
As 2/D7 |
| Total Wheelbase |
44' 3" |
As 2/D7 |
| Descriptive Wheelbase |
5' 9" + 7' 5" + 8' 7" + 9' 6" + 6' 6" + 6' 6" = 44' 3" |
As 2/D7 |
Dimensions
|
2/D7 |
2A/D7 |
| Length (over buffers) |
53' 71⁄4" |
As 2/D7 |
| Weight (in running order) |
83t 6cwt |
As 2/D7 |
| Weight (loco only) |
46t 0cwt |
As 2/D7 |
| Adhesive Weight |
31t 10cwt |
As 2/D7 |
| Maximum Axle Load |
16t 0cwt |
As 2/D7 |
| Water Capacity |
3,080gal |
As 2/D7 |
| Coal Capacity |
5t 0cwt |
As 2/D7 |
Boiler & Firebox
|
2/D7 |
2A/D7 |
| Boiler Pitch |
7' 8" |
As 2/D7 |
|