We have a variety of air tracks, including a 21 foot long track for room 104, a 10 foot long track for room 111, and a 6 foot long track that can be used almost anywhere. Note that the carts that fit the 6' track are different from the carts that fit the longer tracks. They are not interchangeable, as the angle is ever so slightly different.
In 104, for the 21' track, the air supply is in the basement and is piped to the lecture bench. A switch on the bench turns the supply on and off.
With the 10' track in 111, use the Frederiksen air supply.
For the 6' track use the cylindrical, very quiet, air supplies.
