> The unit engages hydraulically. When the input shaft isn't
> spinning, there is no hydraulic pressure.
It would be best to make clear which Laycock OD you are discussing, Nolan,
as this is NOT true of an A-type. An A-type has a hydraulic accumulator,
meaning it can store enough pressure (for awhile) to activate the clutches
even without the input shaft spinning.
> A number of autocrossers and such with a laycock overdrive have a
momentary
> contact button
And (modified) A-type ODs with the early (larger) accumulator.
Randall
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