Luna Park Sydney to invest $30 million on major upgrade, new rides
Luna Park Sydney unveiled today a $30 million plan to update and refresh one of Australia’s best known and most loved destinations, including the installations of new rides and attractions.
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I didn't even notice the counterweight on the Sledgehammer ride till now, looks like it's the 360 inverting version like the paperweight at Aussie World / Stratosfear at Rainbows End.
https://www.parkz.com.au/photo/14762-Stratosfear/gallery/sort/newest/location/ride-2863-Stratosfear/offset/2