

Our crane is attached to the clamps using two L shaped aluminum strips at the base. The main structure is a tower composed of diagonal trusses, with a triangular platform extending out to the side. The crane arm is mounted onto the platform, where it extends through the hole. Our motor is attached at the end of the crane arm, held in place at the bottom with two metal strips. The motor attaches to the delrin strip, which contains a counterweight on the left side. This counterweight is tilted backwards to maximize the lever arm of the force it applies, thus increasing the torque it can exert. This torque supplements the torque supplied by the motor, allowing the weight to be lifted higher. Our delrin strip lifts the weight by pressing upwards on the collar as the strip rotates. We prevented the counterweight from striking the playing field by attaching an additional aluminum strip that holds the counterweight in place.
The Mechanism
Performance
Our crane successfully lifted the weight 3.25 inches during Design Review I, while abiding by all of the rules of the competition.