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 .
Lever action Firearm Manufacturer Verny-Carron has released its Stop and Go Lever action shotgun called the Veloce. It is a unique action which self unloads a fired cartridge but requires a side mounted lever to allow the shotgun to reload and reset the trigger. In more recent times lever action shotguns have seen a resurgence in some markets with the Turkish made Adler A110 Lever action shotgun selling extremely well in the Australian marketplace with over 7000 ordered in under 2 week they are also being imported into North America as well. The success of the Adler in these markets has sparked