@Paperballpark Would you be willing to share a picture of the tilting mechanism? I am planning to build a British Rail Advanced Passenger Train (APT), and came across a Model Train Tilt Mechanism by Mark J E Bellis, which I understand was first exhibited in a LEGO model of a Virgin Pendolino train in 2001.
However, the tilting mechanism extends into the passenger space, which is fine for the majority of the train but I'm struggling to fit the Powered Up Hub (88009), motor (such as 88013) and tilt mechanism in the power car. The alternative is to use the train motor (88011), but as the tilt mechanism uses a shaft fitted to the bogie I haven't worked out how to connect the train motor and the tilt mechanism together.