Patent ID: 6381823
Filing Date: 2002-05-07
Classification: B23K,B62J,F17C,Y10T

Abstract:
A method of making a gas tank for a motorcycle comprising the steps of:hydroforming two side halves of the motorcycle gas tank; tack welding the two side halves together; cutting out a portion of the tack welded side halves for a bottom tunnel; forming the bottom tunnel; welding the formed bottom tunnel to the two side halves; forming a bottom rear end piece; welding the formed bottom rear end piece to the two side halves; welding the tacked side halves to form a tank; forming mounting brackets; welding the formed mounting brackets to the welded tank; drilling holes in the mounting brackets; drilling crossover holes and petcock holes; placing tapped mounting bungs, crossover bungs, and petcock bungs in the respective drilled holes; welding the mounting bungs, crossover bungs, and petcock bungs in their respective holes; drill a gas cap fitting hole; positioning a gas cap fitting in the gas cap fitting hole; welding a gas cap fitting in the gas cap fitting hole; positioning a seat pocket plate on the gas tank; welding the seat pocket plate to the gas tank; cutting off an oil portion to divide the tank into two portions; welding plates onto the two portions; drilling an oil cap hole; welding the two portions together; and welding an oil cap bung to the oil cap hole.