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Old Nov 10, 2012, 03:36 AM
Brutus1967 is offline
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I convince things to work
The Netherlands
Joined Nov 2009
4,614 Posts
Keep in mind that the "optimal" length of the velocity stack has a direct relation to the RPM you are running.
Just a tube, or more a trumpet shape does also make a big difference in some cases, where the trumpet seems to perform better over the whole RPM range and prevents backspitting more effectively for the same lenght (in other words, it can be shorter)

Brgds, Bert
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