SRL is a group of San Francisco-based performance artists using outrageous, frankly dangerous, machines and other ideas. Right up YACF's street.
Perhaps the most dramatic is the V1, which is exactly what you think it is:
While the most dangerous is something that sounds as if it's been adapted from baseball. Or even cricket. The pitching machine, which looks like this:
And does this:
A successful test of the Pitching machine was recently conducted in the SRL yard. The target was a .125 inch thick (one eight inch or 3.18 mm) steel plate 9 by 12 feet wide. 2 by 4 boards 6 ft in length were used. 10 ft boards were also fired, as were groups of 2 foot boards. Complete penetration of the plate occurred at board speeds of 110 mph in 6 foot boards. Boards also exhibited a tendency to explode into splinters above 100 mph. Accuracy and repeatability was excellent. Testing of the autoloader mechanism, (capable of firing two 6 foot boards a second), and the remote control systems (both radio and internet), will occur soon.
One of their shows:
https://500px.com/p/k0re/galleries/srl-inconsiderate-fantasies-pre-show-prephttps://srl.org/index.html