Article snapshot taken from[REDACTED] with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
The 2470 class were an evolution of the 2450 class. They differed in having lighter alternators and smaller fuel tanks. A 2470 class was built by Clyde Engineering for the Townsville Harbour Board, this was later sold to Queensland Rail and renumbered as 2507.