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Old 06-03-2011, 06:23 PM   #18 (permalink)
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Originally Posted by beer View Post
My (real world) test showed that the 2 second vid shown by @cfg83
is the best for flow attachemend with stepped slopes
beer,you'll want to keep an eye out for flutter.The steps will have a natural frequency and harmonics of that frequency in which they'll vibrate like a tuning fork.If not sufficiently stiff enough for dampening they can shake themselves apart in the vortex.
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