A rolling rig for propeller performance testing was developed. The rolling rig presented was used for performance testing of a Mejzlik 27 × 12 TH propeller, which is used on the UIUC Aero Testbed and the UIUC Subscale Sukhoi unmanned research aircraft. The performance parameters measured for the propeller will be used in the future to aid in the calculation of the aerodynamic coefficients of these aircraft. The rolling rig was instrumented to measure flow speed, propeller rotation rate, thrust, torque, air temperature, and air pressure, in order to find the thrust and torque vs. rotation rate curves as well the thrust coefficient, power coefficient, efficiency curves for the propeller. The rig, which is mounted onto a vehicle, was designed and fabricated to be portable such that it is assembled of three sub-assemblies: a platform, a shrouded vertical beam, and a testing apparatus. The rolling rig underwent extensive initial testing including simulated thrust and torque calibration, thermal imaging, and flow visualization. Results for the propeller from experiments performed at flow speeds of 0–60 mph are presented.