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Crack Trainer 1.0
Crack Trainer 1.0
Crack climbing is a niche discipline often underrepresented in climbing gyms and outdoor crags, making training aids essential for skill development. While many DIY crack trainer designs exist, they often fall short in affordability, adjustability, or space efficiency. To address these limitations, I set out to design a crack trainer that is cost-effective (under $100), compact (under 50lbs/does not require a standalone structure), and features multiple crack sizing (1"-3"), providing an accessible and practical training solution.
After researching existing crack trainers, I settled on a sliding parallel board design. The low amount of wood used in this design works to both reduce the cost and the weight/footprint of the trainer. The main way current designs provide adjustability is through the usage of carriage bolts, nuts, and washers. However, this necessitated the usage of a wrench to adjust the width of the crack and proved to be time-consuming. Additionally, carriage bolts were not designed to be used as lead screws and the repeated adjustment would often be prone to galling or even fully seizing if used in an outdoor environment. I opted to modify the usage of pipe clamps to provide adjustability and add stiffness to the structure at an affordable cost.
Clamps modeled in detail as an exercise in reverse engineering and to better understand casting.
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