6 replies to this topic

[Pairaminis]

Can someone please tell me what attaches to the two small holes at the top of the clutch slave cylinder bracket on the clutch cover of a 998 A+ motor.  I know what the four large holes are for. (see photo)

Jack

 

 

 

 

 

Attached Files

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[blackbelt1990]

I think my battery cable runs through a grommit in there. Nothing in the small holes though.

[Wrgreen]

Yes battery cable

[Ethel]

Was it where the Metty clutch damper lived? So long since I've seen one I can't remember for sure

 

 

apparently so http://www.ebay.co.uk/itm/322096669880

[blackbelt1990]

Was it where the Metty clutch damper lived? So long since I've seen one I can't remember for sure
 
 
apparently so http://www.ebay.co.uk/itm/322096669880

What does the damper do? I had one on a van and I took it off. I had no idea what it was but it wouldn't stop leaking fluid!

[tiger99]

The damper limits the rate of engagement and disengagement of the clutch to discourage a potentially damaging and always unpleasant effect when the driver's foot, muscles and nervous system are involved in an unstable feedback loop comprising also the clutch, engine torque, movement of car etc. It can be so bad that only a very highly skilled driver can make a smooth start without umpteen cycles of grab and release. Those with aircraft experience will have heard of "pilot induced iscillation", another variant of much the same thing. We can't change the response time, and in particular, phase lag of the human in the loop, so it has to be done elsewhere, in this case by the damper. It also is one of several reasons why some mediocre cars have steering dampers, which are also used to try to mask the effects of kickback caused by inept designed suspension geometry etc. The Mini only benefits from a clutch damper if the engine steadies are in poor condition or a particularly fierce racing clutch is fitted. The fierce cluth effectively gives greater gain around the loop, in terms of acceleration of car per mm of driver's leg movement. The Metro, being an altogether softer car has different time constants in the engine mounts and with a normal human in control needs one. You would probably need to read up on non-linear multi - variable control theory to get the full picture...

[Ethel]

I don't remember them on Verto clutches, but they obviously were. It was an attempt to civilise the Metro and give it wider market appeal by making the clutch engagement softer.