Water works test with sequential pistons

This is a test of sequential piston action. If you want two sticky pistons on top of each other to work properly you need to have the top one retract before the bottom one or else it will not be pulled down.

This mechanism starts or stops a flow of water. In truth the system is a lot more elaborate than it needs to be, but that’s part of the fun of it. In the background you can see the tower and fortress.