bogie

1878. Bogie Trucks for Railway Locomotives, &c.: … Fig. 1 is a cross section and Fig. 2 a section plan of a bogie. A curved casting a is fixed to the engine and a wrought-iron beam or beams b are connected to the bogie frames by links c fitted with or without springs d.

Although most A320s have two wheels on each of their main gear, a few built for the Indian market have four-wheel bogies, halving the amount of weight on each wheel and allowing the aircraft to use runways that couldn't withstand the ground pressure from a standard A320.

The bogie coaches which he spoke of last year had been brought or were being brought into active service, but they had no further wagon stock available.