When HIT Fit SF moved their boxing gym from a single-story building in San Francisco’s Mission District onto the ground floor of a multi-story building with apartments on the upper floors, they asked Captive Spark to design a system for their space.

They needed to be able to move their heavy bags silently into and out of position for group fitness classes, and also to prevent reverberation from the stationary bags from rattling the walls in the apartments above. We designed, fabricated, and installed a truss and trolley system that is buffered by rubber to absorb sound and movement, as well as stationary points for either heavy bags or speed bags.