[TR] [Spits] Over Drive Question ????

[Nolan]

It's in a Spitfire Randall.  That means it's a D or J.  They don't hold 
hydraulic pressure.


----- Original Message ----- 
From: "Randall" <tr3driver at ca.rr.com>
To: <triumphs at autox.team.net>
Sent: Thursday, November 29, 2007 11:20 AM
Subject: Re: [TR] [Spits] Over Drive Question ????


>> 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