This photo shows an early prototype of the Freedom Chair (FC-B) which had a fork that wasn't very strong in the side-to-side loading case. When riding down a steep downhill, the rider purposely drove the front wheel into rocks and roots (to test it). Near the bottom of the hill, the front wheel got caught sideways, and pancaked flat. The rider and rest of the chair was unharmed, and the fork was repaired by bending it straight using the push levers. Ultimately, in later (FC-C and beyond, which includes all production) versions of the Freedom Chair, supporting flanges were added to the fork, dramatically increasing its strength in this direction.