A 8-in wide polyamide F-1 flat belt is used to connect a 2-in diameter pulley to drive a larger pulley with an angular velocity ratio of 0.5. The center-to-center distance is 9.5 ft. The angular speed of the small pulley is 2100 rev/min as it delivers 2 hp. The service is such that a service factor of Ks of 1.25 is appropriate.