Loch Ness Monster
The "dog" on the right is used to attach the car to the lift chain. The "dog" on the left is the anti-rollback mechanism that prevents trains from falling back down the lift hills. Because this "dog" comes in contact with every sawtooth-shaped piece of metal in the yellow trough, it is covered in a green piece of material that is significantly softer than the teeth on the trough. That way, the troughs, which run the entire length of both lift hills, don't wear down. The green piece wears away first, but it is easily replaced. In each example shown here, the movement of the cars would be toward the camera.
©2018 by Joel A. Rogers.