Dual Mass Flywheels

beachbuggy

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How much movement should there be in the the dual mass flywheels?

I know there is a spring inbetween the flywheel and friction plates to take up movement, and I have look at 2 now and both move about 30degrees freely, is this normal? I assume once the flywheel is spinning the centrugal forces pushes on the spring and any vibrations from there are taken up by the springs.

One is nearly new and jsut wanted to check before fitting.