Motorcycle engine power valve control upgrade kit
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United States of America Patent
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Oct 24, 2017
Grant Date -
N/A
app pub date -
Jun 3, 2016
filing date -
Jun 3, 2016
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A closing fork and open spring bias of a center power valve for a hitless control of an adjustable exhaust port 2-stroke motorcycle engine includes a closing fork which includes a flat plate that extends into two substantially parallel flat closing fork arms. An internal closing fork base section cylindrical wall accepts a shaft inserted there through. Each torsion spring of two torsion springs has a first extended leg including an approximately 90-degree bend about where the first extended leg extends out from a spring body of each torsion spring and a second leg extending straight out of a body of each torsion spring. Each of the torsion springs is a mirror of each other where the first extended leg extends from a different side. An upgrade kit and a method to convert a power valve system 2-stroke motorcycle engine to a hitless operation are also described.
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