Patent ID: 7383909
Filing Date: 2008-06-10
Classification: B62K

Abstract:
1. A motorcycle comprising a frame assembly, said frame assembly comprising a left main frame and a right main frame, an engine mounting bracket being integrally formed on each of said left and right main frames, an engine being directly connected to said left and right main frames by said engine mounting brackets, said left and right main frames each comprising a portion of a steering head pipe, each of said left and right main frames extending rearward and downward from said portion of said steering head pipe, a left rear arm bracket extending downward from a left main frame and a right rear arm bracket extending downward from said right main frame, said steering head pipe being split into a left portion and a right portion such that said left main frame integrally comprises said left portion of said steering head pipe and said left rear arm bracket and said right main frame integrally comprises said right portion of said steering head pipe and said right rear arm bracket, said left and right portions of said steering head pipe being removably secured together between a rearward bolt and a forward bolt to pivotally support a steering shaft, wherein said steering head pipe comprises an upper bearing portion and a lower bearing portion, said upper bearing portion extending upwardly from an upper portion of each of said left and right main frames, said upper bearing portion comprising a forward portion and a rearward portion, said forward portion and said rearward portion having substantially equal widths, a forward bolt and a rearward bolt extending through said upper bearing portion and having substantially equal lengths, said lower bearing portion comprising a forward portion and a rearward portion, said forward portion being wider than said rearward portion, a rearward bolt and a forward bolt extending through said lower bearing portion and said rearward bolt being longer than said forward bolt.