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Subject The Cusco LSD is a clutch-type LSD >
     
Posted by kZtt (zedparts.com) on February 25, 2002 at 7:09 PM
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In Reply To is it still a viscous coupling? posted by NIXTA TTZ on February 25, 2002 at 06:10 PM
     
Message not a viscous LSD. It uses the friction characteristics of clutch discs to transfer power when one wheel is slipping... a viscous LSD works by heating up a fluid causing it to expand when one wheel slips. A viscous LSD "reacts" slower than a clutch-type LSD, so when one wheel starts to slip, there is a very short delay where the LSD is not functioning while the fluid heats up. On high hp cars, this short delay could cause the car to deviate from its intended path.

A clutch-type LSD also gives a more linear and progressive lock-up characteristic compared to a viscous LSD.

The disadvantage of a clutch-type LSD is that it will require rebuilding every few years just like your clutch...

     
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