LSWR/SR Adams Radial 4-4-2T
Tank length: The first 28 locomotives had very short side tanks. Subsequent locomotives had longer tanks of increased capacity.
Blower valve: The position of the blower valve, as shown in the table, varied depending on the builder. Late survivors had the blower valve moved, in Drummond style, to the side of the smokebox with the operating rod inside the handrail, which was lengthened for the purpose.
Dome: Domes were of two sizes as shown in the table.
Trailing wheels: The last twenty engines had the trailing wheel diameter increased to 3’ 6”.
Tank front: On some engines the top edge of the tank front was flush with the tank top. On others the front was extended to the same height as the tank sides with the beading carried round over the tank front.
When built the locomotives
had Adams stove pipe chimneys. These were replaced by Drummond from February
1901 with his distinctive design.
Slidebars: From circa 1907 numbers 47, 52, 57, 125, 129, 415, 419 and 520 were fitted with double slidebars.
Splashers: The splashers of the Beyer Peacock engines were adorned with that makers builders plates. The splashers of the other engines had a wide beading in a circular arc.
Front frames: The Neilson & Co. engines had front frames to a profile different from the remainder. The frames of numbers 125 and 520 were replaced by the Southern Railway during an extensive rebuilding at Eastleigh during 1930. The new frames were to a new profile at the front.
Cab cut-out: The Neilson & Co. engines had a different cab side cut out to the remainder.
Boiler handrail: The position of the boiler handrail knobs depended on the builder. The boiler handrail on the Beyer, Peacock engines was attached with distinctive brackets.
Tank lifting Brackets: In SR days lifting brackets were fitted to the top of each tank.
Coal Rails: Three bunker coal rails were fitted from circa 1900. Later still the coal rails were backed by metal sheeting to stop the loss of small coal.
Cab rear windows: After the fitting of coal rails most engines were fitted with bars of either wood or metal over the rear cab windows. Some of the later survivors were subsequently fitted with smaller windows.
Water filler: As the coal rail and rear window changes took place so the height of the water filler increased to allow more coal to be carried.
Cab roof: The original cab roofs were wooden. From circa 1900 they were replaced, by Drummond, with steel roofs.
Safety chains: When built the engines were fitted with safety chains. These were gradually removed during Drummond’s time.
Steam heating: From circa 1901 carriage heating steam pipes were fitted.
Lamp brackets: The locomotives were built with Adam's socket style brackets. Drummond added new brackets of his design over the buffers at the front and rear and above the coupling hook at the rear. The SR standardised on a design with the socket in the lamp and the later survivors were gradually with new brackets of standard design.
Smokeboxes: When smokeboxes were renewed by the Southern Railway, the flush riveting was often replaced by visible snap head rivets.
Couplings: The engines in their early years ran with a single, long coupling link often with a separate screw coupling hanging from the draw hook. Later the locomotives were equipped with screw couplings together with a hook to carry the coupling when it was not required.
Variations/Modifications not incorporated into the kit
Drummond boilers: In 1907 two new boilers of Drummond pattern with dome top safety valves were built and fitted initially to 486 and 520.
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