About a week before the first Beantown Stomp I ordered a 42" barrel fan. Unfortunately when I turned it on, the motor turned at full speed but the blades only spun very slowly, and the belt bounced all around. Looking at the belt the problem was clear:

This is so loose it can't transfer much power from the motor to the blades. The motor is held in place with four 10mm-head bolts in slotted channels, however, which allows us to adjust the belt tension. After loosening all four it was easy to slide it down into place:

At this point it worked really well and we were ready to pull it over to the venue:

People appreciated the volume of air it could move: