Leighton
Mega Poster
This may be completely wrong, but looking at my amazing representation of the structure, it is quite obvious that the weight of the lift and drop is spread over the two main lift supports, the one directly under the drop is under direct compression because the point where the support joins the drop is almost vertical.
On the other side of the crest (the lift side) the force is transferred down the lift hill track until it encounters another support, where the force is split in two again, part onto the support and part down the lift.
Looking at the first image which shows the support in a vertical position, I think it would result in a reasonably large force trying to bend the top of the support towards the station, so that support is taking some force in compression (straight to the ground) and some in a bending force (towards the station)
By angling the support against the direction of force, it will create a larger compressive force on that support and reduce the bending it will experience at the top.
Maybe
On the other side of the crest (the lift side) the force is transferred down the lift hill track until it encounters another support, where the force is split in two again, part onto the support and part down the lift.
Looking at the first image which shows the support in a vertical position, I think it would result in a reasonably large force trying to bend the top of the support towards the station, so that support is taking some force in compression (straight to the ground) and some in a bending force (towards the station)
By angling the support against the direction of force, it will create a larger compressive force on that support and reduce the bending it will experience at the top.
Maybe