Donkey Calf Raise Attachment "Calf Crusher Strap"

grabcad

The Donkey Calf Raise exercise is a favorite among personal trainers due to its effective range of motion. As an enthusiast, the challenge to create an attachment for Smith Machines for this exercise caught my attention. Balance and stability are crucial for any workout; thus, I designed a belt attachment that attaches the apparatus to the user instead of the equipment. This prevents potential injury from the bar twisting or rotating. To use the device, set up the Smith Machine with the bar on stopping pads, positioned so that when the user stands on a block and bends over slightly, their knees are bent. Raising their hips to the bar secures the hooks using pressure from the bar. After completing the repetitions, lowering the hips below the bar releases the device for easy detachment. My attachment design is secure and simple to manufacture. It's made of 1/8-inch steel to accommodate heavy weights, with a 2-inch canvas belt, high-density foam backing, and breathable soft cushion for comfort. Aluminum alloy hooks have removable HDPE inserts to protect equipment. The top structure is also covered with replaceable HDPE inserts. With low production costs around $95-$115 on a small scale, this product fills an essential niche in the gym world.