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Message: <blockquote data-quote="Anthony Collova" data-source="post: 6966731" data-attributes="member: 558844">Nor do they need one.The viscosity and specific gravity of coatings CAN outperform a constraint layer damper depending on the strength of the foil on the CLD.Another example of of this is the butyl that is used in most dampers. If you drop the temperature of the buty to about 40 degrees f. below zero, the foil will make absolutely no difference in damping, yet the vibration reduction will be the same as if trhe foil were there at room temperature (with the same amount of vibrational stress obviously)So if you compare the hardness and elastomeric value of the butyl at -40 it is pretty close to the hardness of the acrylic coatings, at room temperature, killing the need for foil.</blockquote>

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