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post #9 of Old 01-12-2010
roline
Cal 9.2 SilverSwan
 
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flex couplers

All elastomers have cross linking agents to initiate the curing of the base elastomer. The elastomers due continue to cross link due to aging. Exposure to temperature accelerates the aging process. When motor mounts are old, they usually will have taken a set in the loaded position, and then aged, become firmer, with reduced flexability. In the case of engine seals, the elastomer can become brittle and crumble/ break, leak... As motor mounts age, the shaft alignment should be checked due to the sagging and taking a set. Flex couplings can be used to minimize vibration of misalignment, but should not be used in place of proper alignment. The usually do not like more than 6 to 8 degrees of angular misalignment. Examples of polymer / elastomeric couplers:
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File Type: jpg fc1.jpg (47.0 KB, 103 views)
File Type: jpg poly.jpg (31.2 KB, 98 views)
File Type: jpg cupl.jpg (23.8 KB, 97 views)

Cal 9.2 #19 SilverSwan
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