I developed and built this prototype rover as a research project for the Engineering Mechanics and Space Systems Lab (EMSSL) at NC State University. The report for this project can be found here. The development of a small-scale prototype (3:10 scale) was done with the goal of testing and evaluating the terrestrial locomotion performance of the MAARCO rover’s propulsion system in real-world conditions. The prototype allows researchers not only to evaluate the rover’s capabilities more cost-effectively and efficiently than building a full-scale version but also to identify any design flaws, issues, or challenges that may arise before developing a full-scale rover. The small-scale prototype is 18.4 cm tall, 25.4 cm wide, and 33 cm long, and weighs approximately 4.5 kg. Its chassis comprises two quarter-inch thick 6061 aluminum waterjet cut plates spaced apart with three pieces of aluminum extrusion. The modular and easy-to-manufacture chassis enables switching out different helical drives designs with relative ease. The pair of helical drives are 3D printed with ABS plastic material to make them impact and wear resistant. The drive electronics consist of two 12 VDC brushed motors providing 133.2 kg.cm of torque, two brushed motor electronic speed controls (ESC), and a 3s 11.1V LiPo battery. The torque is transmitted to the helical drives via a set of GT2 timing belt pulleys and belts. The ESC’s receive a PWM signal and control the direction and speed of the motors. The PWM signal is either sent through an RC receiver allowing for the rover to be controlled manually for testing electronics and chassis components or through an Arduino allowing the rover to follow a specific set of commands for data collection and dynamic testing. The rovers sensors include an IMU and rotary encoders built into the motors. The chassis is designed to house loads of varying weights to analyze the effect of carrying different types of payloads.