In the current issue of Machine Design, there is an article about building the tether-pull machine which was used in the most recent Space Elevator Games.  It’s an interesting article – here’s an excerpt: “The tether machine is a rectangular box about 12-ft long and 18-in. high on each side. Using bolttogether connectors from Bosch Rexroth … Continue reading “Building a tug-of-war machine”