1984: A real Big Dipper for Luna Park

From the opening of Luna Park in 1935 until 1981, the original Big Dipper was a draw card for the hordes that descended on Luna Park at Milsons Point. It's removed was associated with the rebuilding of Luna Park following the Ghost Train fire in June 1979 that killed six people

In 1984, there was a proposal for new and larger Big Dipper but residents of Lavender Bay & McMahons Point objected, citing noise concerns.

Source: Coultan, M. 1984. "Bumpy ride ahead for Luna Park's roller-coaster". The Sydney Morning Herald, August 8:1. 

The roller coaster did not eventuate while the park closed for a second time in 1988. A new Big Dipper appeared in 1995 when the park was reopened and lasted until its closure in 1996. This was smaller than the 1984 vision.