HornsUp Posted February 24, 2010 Share Posted February 24, 2010 Rifling is cut into a gun barrel to impart a spin on the bullet. This spin prevents the projectile from tumbling in flight. The physics of a standing wave in an air column is a whole different ballgame. Quote Link to comment Share on other sites More sharing options...
Jimisback Posted February 25, 2010 Author Share Posted February 25, 2010 Please explain Standing wave. I assume it is undisturbed? Quote Link to comment Share on other sites More sharing options...
Dave Posted February 25, 2010 Share Posted February 25, 2010 http://en.wikipedia.org/wiki/Standing_wave A standing wave, also known as a stationary wave, is a wave that remains in a constant position. This phenomenon can occur because the medium is moving in the opposite direction to the wave, or it can arise in a stationary medium as a result of interference between two waves traveling in opposite directions. In the second case, for waves of equal amplitude traveling in opposing directions, there is on average no net propagation of energy.Standing waves in resonators are one cause of the phenomenon called resonance. Quote Link to comment Share on other sites More sharing options...
Jimisback Posted March 6, 2010 Author Share Posted March 6, 2010 http://truevee.com/ Quote Link to comment Share on other sites More sharing options...
MiniSopGuy Posted March 29, 2010 Share Posted March 29, 2010 (edited) Just to add to the discussion of different backbores, has anyone played on an Xstream mouthpiece? Take a look at the picture on the link above. It has a "power chamber" right after the throat. Edited March 29, 2010 by MiniSopGuy Quote Link to comment Share on other sites More sharing options...
Shadow_7 Posted March 29, 2010 Share Posted March 29, 2010 Just to add to the discussion of different backbores, has anyone played on an Xstream mouthpiece?Take a look at the picture on the link above. It has a "power chamber" right after the throat. Looks problematic. The quick open after the cup could help slotting. The tight second throat could help with resistence to keep the high end available. It sure seems to have a lot of mass to it, to compensate for something. The resistence factor will likely render it non-applicable in a lot of drumcorps circles. I'm not a fan of the perfect V backbore, with or without power chamber. Quote Link to comment Share on other sites More sharing options...
JohnZ Posted March 29, 2010 Share Posted March 29, 2010 I'm not sure I am on the same page with all these gizmos. unless I hear someone playing these things and it makes an appreciable difference in the quality of the playing, I'd just as soon think it would be better to save the $$ and do it the old fashioned way. might be good, just don't know.... Quote Link to comment Share on other sites More sharing options...
nukeme70 Posted March 30, 2010 Share Posted March 30, 2010 Just to add to the discussion of different backbores, has anyone played on an Xstream mouthpiece?Take a look at the picture on the link above. It has a "power chamber" right after the throat. I'm curious how the heck they bore that shape into it; unless it's 2 parts that get joined, I don't see how they could get the larger diameter bored past the narrower one...maybe an expandable bit that opens past the throat? Any machinists out there that could offer enlightenment? Possibly cast as opposed to machined? Quote Link to comment Share on other sites More sharing options...
HornsUp Posted March 30, 2010 Share Posted March 30, 2010 A good candidate for the Precision Machinists' Hall Of Fame. If they're offering free T-shirts, I'll have one. Quote Link to comment Share on other sites More sharing options...
MiniSopGuy Posted March 31, 2010 Share Posted March 31, 2010 I'm curious how the heck they bore that shape into it; unless it's 2 parts that get joined, I don't see how they could get the larger diameter bored past the narrower one...maybe an expandable bit that opens past the throat? Any machinists out there that could offer enlightenment? Possibly cast as opposed to machined? Looking at the Warburton compatible shank, I am thinking it is a 2 piece design, looks like there is a seam, then soldered together. Then their 2 piece looks like the top part was made as 2 pieces then soldered together: Quote Link to comment Share on other sites More sharing options...
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