Apparatus for producing simulated V-twin motorcycle sound in bicycles

摘要

The present invention relates to a balloon and balloon-holding device and a method for conditioning the surface of the balloon for producing a simulated motorcycle engine sound similar to a V-twin motorcycle using a bicycle. The device comprises a balloon trap to cause the balloon to act as its own sound box and thereby produce a loud resonant sound. A method is disclosed to lubricate the surface of the balloon to prolong the useful life of the balloon.