The inertia of the exhaust gases are in the equation.  Overlap, or
duration, depends on inertia to affect charge ratios.  There are some
interesting books on the subject.

BY

Scientific Design of Exhaust and Intake Systems. Philip H. Smith
and John C. Morrison Published by Robert Bentley

http://www.rb.com

ISBN 0-8376-0309-9


Paul Lamar ...No rotor no motor.

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