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3 1/2 inch gauge LNER A3 Pacific No.2502 "Hyperion" - stock code 9980

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3 1/2 inch gauge LNER A3 Pacific No.2502 "Hyperion"
3 1/2 inch gauge LNER A3 Pacific No.2502 "Hyperion"
3 1/2 inch gauge LNER A3 Pacific No.2502 "Hyperion"
3 1/2 inch gauge LNER A3 Pacific No.2502 "Hyperion"
3 1/2 inch gauge LNER A3 Pacific No.2502 "Hyperion"
3 1/2 inch gauge LNER A3 Pacific No.2502 "Hyperion"
3 1/2 inch gauge LNER A3 Pacific No.2502 "Hyperion"
3 1/2 inch gauge LNER A3 Pacific No.2502 "Hyperion"
3 1/2 inch gauge LNER A3 Pacific No.2502 "Hyperion"
3 1/2 inch gauge LNER A3 Pacific No.2502 "Hyperion"
3 1/2 inch gauge LNER A3 Pacific No.2502 "Hyperion"
3 1/2 inch gauge LNER A3 Pacific No.2502 "Hyperion"
3 1/2 inch gauge LNER A3 Pacific No.2502 "Hyperion"
3 1/2 inch gauge LNER A3 Pacific No.2502 "Hyperion"
3 1/2 inch gauge LNER A3 Pacific No.2502 "Hyperion"
3 1/2 inch gauge LNER A3 Pacific No.2502 "Hyperion"
3 1/2 inch gauge LNER A3 Pacific No.2502 "Hyperion"
3 1/2 inch gauge LNER A3 Pacific No.2502 "Hyperion"
3 1/2 inch gauge LNER A3 Pacific No.2502 "Hyperion"
3 1/2 inch gauge LNER A3 Pacific No.2502 "Hyperion"
3 1/2 inch gauge LNER A3 Pacific No.2502 "Hyperion"
3 1/2 inch gauge LNER A3 Pacific No.2502 "Hyperion"
3 1/2 inch gauge LNER A3 Pacific No.2502 "Hyperion"
3 1/2 inch gauge LNER A3 Pacific No.2502 "Hyperion"
A 3 1/2 inch gauge LNER A3 Pacific No.2502 "Hyperion", a well built locomotive which recently came to us in part exchange for a Southern "King Arthur" in the same gauge.

The silver soldered copper boiler is fitted with radiant superheaters, it's had recent hydraulic and steam tests with new certification issued.

Three cylinder chassis with slide valves actuated by Gresley-Holcroft conjugated valve gear, the displacement lubricator has a sight feed in the cab; boiler feed is by twin axle pumps and injector, with auxiliary hand pump in the tender.

The engine steams freely and runs particularly well, mechanically quiet with well-defined exhaust beats - there's some video of it on the rolling road here.

The original engine, A3 No.2502 "Hyperion" was built at Doncaster works in 1934, it was finally withdrawn and scrapped in 1964.

gauge 3 1/2 inch
length/inches 34 + 20
width/inches 7 1/2
height/inches 11
wheel material cast iron
axlebox type plain bearing
cylinder material 3 x gunmetal
valve type slide
valve gear Gresley-Holcroft conjugated
reverser type screw
lubricator type displacement with sight feed
injector(s) 1
boiler number N13-80-611
year built 2009
CE mark n/a - non-commercial
working pressure/psi 80
boiler type locomotive
boiler material copper
boiler construction silver soldered
hydraulic test valid to 17/Oct/2025
steam test valid to 18/Oct/22
superheater(s) 2
superheater type radiant
safety valve(s) 2
safety valve type spring
mechanical pump 2 x axle
hand pump 1
whistle yes