Valve Gap Theory
By Douglas K. Rhodes
I read and re-read Richard Vance's excellent article on valve gap theory several times, enjoying ever-increasing understanding.
As a small addendum, I have observed that, on some players, the atmosphere-side valve opening is larger than the supply-side opening. I presume that this is to assure that, whatever restrictions might be made on the closing of the pneumatic by limiting valve travel (within limits), the re-entry of air and re-opening of the pneumatic happen as fast as possible to optimize repetition. I believe this is consistent with Mr. Vance's thoughts.
Cheers
Doug Rhodes
[ Richard, do you have a mathematic model of the valve, pneumatic and
[ action which could be used in a dynamic computer synthesis? -- Robbie
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(Message sent Fri 7 Mar 1997, 22:42:01 GMT, from time zone GMT-0800.) |
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