Motorcycle muffler baffle

Abstract

A baffle is provided for a motorcycle muffler to increase the engine horsepower and torque. The baffle includes an elongated pipe with louvered openings, and support members to mount the pipe inside the muffler. The pipe also includes a pair of rods extending spirally along the inner wall of the pipe. The rods are offset 180° from each other. The spiraling rods create an air flow vortex for exhaust gases passing through the baffle, and thereby enhance engine performance.

What is claimed is: 
     
         1 . A motorcycle muffler baffle, comprising:
 a pipe with a plurality of louvered openings extending along the pipe;   a first internal rod extending in a spiral pattern within the pipe; and   a pair of spaced apart supports for mounting the baffle in a motorcycle muffler.   
     
     
         2 . The motorcycle muffler baffle of  claim 1  wherein the louvered openings extend in a spiral pattern around the pipe. 
     
     
         3 . The motorcycle muffler baffle of  claim 1  wherein the spiral patterns of the rod induces a vortex air flow of exhaust gasses within the pipe. 
     
     
         4 . The motorcycle muffler baffle of  claim 1  wherein the spiral pattern of the rod extends more than 180° along the pipe. 
     
     
         5 . The motorcycle muffler baffle of  claim 1  further comprising a second internal rod extending in a spiral pattern within the pipe. 
     
     
         6 . The motorcycle muffler baffle of  claim 5  wherein the first and second rods are offset approximately 180° from one another. 
     
     
         7 . The motorcycle muffler baffle of  claim 1  wherein the supports have a larger diameter than the pipe. 
     
     
         8 . The motorcycle muffler baffle of  claim 1  wherein the louvered openings are arranged in a plurality of straight lines along the length of the pipe. 
     
     
         9 . The motorcycle muffler baffle of  claim 1  wherein the louvered openings are oriented in axial lines. 
     
     
         10 . The motorcycle muffler baffle of  claim 1  wherein one support is adjacent an end of the pipe and the other support is located at an approximate midpoint between opposite ends of the pipe. 
     
     
         11 . A baffle for a motorcycle muffler, comprising:
 an elongated pipe having opposite ends and opposite inner and outer wall surfaces;   at least one support member on the pipe to mount the pipe inside the muffler;   a plurality of holes in the pipe extending substantially along the length of the pipe; and   first and second air flow members extending along the inner wall surface of the pipe to create a vortex air flow for exhaust gases passing through the baffle.   
     
     
         12 . The baffle of  claim 11  wherein the air flow members extend spirally within the pipe. 
     
     
         13 . The baffle of  claim 12  wherein the air flow members are offset 180° from one another. 
     
     
         14 . The baffle of  claim 11  wherein the air flow members are spaced on opposite sides of the pipe. 
     
     
         15 . The baffle of  claim 11  wherein the holes are louvers. 
     
     
         16 . The baffle of  claim 11  wherein the pipe has a constant diameter along its full length. 
     
     
         17 . The baffle of  claim 11  wherein the holes extend in a spiral pattern. 
     
     
         18 . The baffle of  claim 17  wherein the air flow members extend substantially the full length of the pipe. 
     
     
         19 . The baffle of  claim 11  wherein the air flow members are rods. 
     
     
         20 . The baffle of  claim 19  wherein the rods have a diameter of ¼ inch.