Bicycle-powered blueberry winnower
Excellent tale from the “Make” – If the field wasn’t so remote, Waldo County residents would have been treated to an unusual sight in September: Blueberry rakers merrily pedaling old bicycles that powered even-older machines used to clean the fruit. Like many good ideas, Shana Hanson’s bicycle-powered blueberry winnowers had their roots in calamity… Hanson borrowed two bicycles that were already mounted on homemade wooden frames. She removed the tires from the back wheels, and covered the inside of the rims with duct tape. Then she attached drive belts that linked the wheels to pulleys on the winnowers. It was an instant success. Link.
Great resource. Bicycle frame building has a reputation as being an arcane art; something that’s practiced by wizened old Jedi masters, or else carried out by huge, complicated robots in Taiwan, attended by a small army of engineers, technicians, and metallurgists. This isn’t so. Frame building is a craft like any other, with simple, consistent rules that mere mortals can master fairly easily, given sufficient attention to detail and care. [
