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Old 03-13-2010, 10:45 PM   #8
motu
Loose Pre Unit
 
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Joined: Dec 2001
Location: New Zealand
Oddometer: 4,361
An old theory goes,change the direction 3 times.So it goes into the first chamber,then through the little pipe to the end,turns around and comes back to the middle,then turns again to go out the out hole.And each time it hits a chamber it expands.....controlled expansion,the correct way to contain an explosion and make it safe for the public....and that way you don't get the loud bang.
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