The value of shock absorbing for manual wheelchairs isn't just in efficiency, it would be also quite valuable for making it less painful to go over bumps. Even

The value of shock absorbing for manual wheelchairs isn't just in efficiency, it would be also quite valuable for making it less painful to go over bumps. Even going down a relatively city sidewalk is exhausting from the bumps and cracks, because jolting adds to the pain of sitting upright if your spine or pelvis are already in pain. Efficiency is also great though!