Lever the power out, and the ratio of output to input force is given by the ratio of the distances from the fulcrum to the points of application of these forces. This is known as the "law of the lever." The mechanical advantage of a lever can be determined by considering the balance of moments or torque, "T", about the fulcrum. where F is the input force to the lever and F is the output force. The distances "a" and "b" are the perpendicular distances between the forces and the fulcrum. Since the moments of torque must be balanced, formula_3 .
Colt Ring Lever rifles Lever rifle began production and continued until 1841, with a total of about 500 manufactured (serial numbers 1 through 500). Because only a small number of the Ring Lever rifles were manufactured, they are considered rare finds among all Colt firearms, with the First Model being the rarest firearm produced under the Patent Arms Manufacturing Company. Although neither the First nor Second Model Ring Lever rifles saw widespread adoption by any military organization, several were procured by the United States Army and the Texas Navy. After an unfavorable review by Army officials in September 1837, which reported that Colt's First