Project
62 – Technical Information
USA
Class 62 0-6-0T Steam Locomotives 30075 (formerly
62-669), 62-521 (to become 30076) and 62-121
|
| Builder |
Djuro Djakovic Works,
Slavonski Brod, Croatia |
| Designer |
Built to a
"pattern" (licence HK Porter) of USATC
"S100" 0-6-0T steam locomotive designed by
Colonel Howard G Hill (USAR) in 1941 for War Department
service in Europe, but utilising "plate"
instead of "bar" frames. 106 of the original
"S100" locomotives were taken into service
after World War II to form Yugoslavian "Class
62". 90 further locomotives were built locally
between 1952 and 1961 and added to "Class 62" |
| Year
of Manufacture |
1960 (62-669/30075);
1954 (62-521); 1957 (62-121) |
| Works
Number |
DD669/60 |
| Service
Numbers |
62-669:-
Store Steelworks "Works Locomotive No 10" and
30075 |
| Acquired
by Project 62 |
62-669 - 1990; 62-521
- 2006; 62-121 - 2006 ("Friends" arrangement
with the Slovenian National Railway Museum) |
| Rebuilt |
62-669 - 1992 at
Herston Works (Swanage Railway), to UK Southern Railway
"USA Class" dock tank specification and
renumbered 30075. 62-521 will
be likewise rebuilt but with additional "Disability
Access" facility and hopefully into service by 2008
|
| Length |
29 ft 9 inches |
| Wheels |
4 ft 6 inches diameter
- arranged 0-6-0 with drive to rear (bunker end) wheels |
| Wheelbase |
10 ft |
| Weight |
46.5 tons
(operational); 42 tons (dry weight) |
| Valve
Gear |
Walschaerts |
| Cylinders |
2 outside mounted -
16.5 inches diameter x 24 inches stroke |
| Boiler
Pressure |
200psi
("S100" - 210psi) |
| Water
Tank Capacity |
1,000 gals |
| Coal
Bunker |
30075: 1.5 tons;
62-521 and 62-121: 2.6 tonnes |
| Tractive
Effort |
20,570 lbs at 85%
boiler pressure ("S100" - 21,600 lbs) |
| BR
Power Classification |
3F |
 Tractive Effort (TE) - the force in lbs
applied to the rail by the locomotive wheels - is
calculated using the following equation:-
TE = (c . P . (n/2) . d2 . s) / D
c = constant for effective boiler pressure and friction
(usually 0.85)
P = boiler pressure in psi
n = number of pistons
d = piston diameter in inches
s = stroke length in inches
D = drive wheel diameter in inches
TE = (0.85 x 200 x (2/2) x 16.52 x 24) / 54 = 20,570 lbs
(21,600 lbs original "S100" at 210 psi)
|
62-669 at Store Steelworks 1990. The
air compressor seen mounted to the left of the smokebox
is now part of "Flying Scotsman"
|
A shot from a comparable angle of
62-669 now running as BR 30075 on the East Somerset
Railway - 7th July 2004
|
| Contact us - for further information about 30075,
30076, 62-121, joining Project 62 or comments about this
website BACK
TO HOME PAGE
|