Servo Assisted Clutch Anyone??

[Lagnakeil]

Hello,

I am thinking about trying to fit a remote servo (similar to Mini or MGB) and plumb it inline to the clutch slave. Has anyone tried this or carried out a modification to make the clutch lighter? I have a M/OD gear box with a new clutch and pressure plate.

Any help gratefully received.

Regards,
Richard

[edd]

I sourced my clutch from Ld parts and having replaced everything with new my clutch isn't heavy at all.
Edd

[wilf]

This was a frequent mod on cars I used to play with, that had big Yank V8s and clutch pressures to match. It works, but you do get a "wandering" bite point.

[stagmuffin]

that is rather a worrying thought having to assist a stag clutch, i would dare to suggest if its that heavy there is a problem there somewhere but in general they are a very light clutch .there are many remote servo kits available that may or not be suitable but they could also over assist . there was a kit for the jag 3.4 mk2 as this had a very heavy clutch i used to have one years back and it was like pressing the brake pedal in my modern which at the time was a cortina estate 1600 deluxe mk2 im guessing if you do a little research and look at kit car companys something may come up suitable good luck

[MandM]

I sourced my clutch from Ld parts and having replaced everything with new my clutch isn't heavy at all.
Edd

Hi Edd , I watched classic car rescue last year sometime and they fitted a servo to a mk1 consul for a driver, has anyone seen a similar mod on a Stag ?

[Stagdad]

Hello,

I am thinking about trying to fit a remote servo (similar to Mini or MGB) and plumb it inline to the clutch slave. Has anyone tried this or carried out a modification to make the clutch lighter? I have a M/OD gear box with a new clutch and pressure plate.

Any help gratefully received.

Regards,
Richard

I've fitted a Tilton concentric slave cylinder which does away with all the moving parts apart from the bearing itself. Won't reduce the pressure of the plate but does reduce friction.

[StagJonno]

IIRC, Car SOS did this mod on a car way back, for a guy who was losing strength in his left leg - might have been Series 1. I may have burnt a DVD, which I could copy if anyone remembers what the car was (although it may also be on YouTube. I think for the Stag, they swapped the manual for an auto.

Jonno

[thebadleys]

Think this is the one Jonno, lots of adverts.

http://www.channel4.com/programmes/car-sos/on-demand/59760-009

Nigel

[StagJonno]

Think this is the one Jonno, lots of adverts.

http://www.channel4.com/programmes/car-sos/on-demand/59760-009

Nigel

Yup,

That's the one - well found Nigel.

Jonno

[Hughesy]

I've fitted a Tilton concentric slave cylinder which does away with all the moving parts apart from the bearing itself. Won't reduce the pressure of the plate but does reduce friction.

Hi Steve,

Checked out their website and this looks like a good modification that may prevent the clutch shutter that seems to always appear as the clutch installation wears? Mine is okay for now but does shutter a little when it gets hot. Are you able to share how you set this up, what machining etc may have been required? I see they have a universal application but it would be very interesting to see how you fitted yours. Regards Craig

[wilf]

It can be done, but you MUST take precautions to stop the concentric slave cylinder from over-travelling, as that leads to failure. I have seen this personally many times. The concentric slaves were developed for race use, where lightness is all and serviceability counts for little as things get torn down and rebuilt regularly.

In the kit car world, people thought these were the best things since sliced bread until they had multiple hydraulic line banjo joint failures and over-travelling issues. These days an external slave is once again seen as the best solution.

Just my 2ps worth.

[KOY 23]

Wilf.
If Steve's done it will be done well.
I was under the impression that CSC's were fitted to most modern manual cars.

[wilf]

Indeed they are, and properly engineered they are fine, but as an aftermarket add - on, they might not be.

[Stagdad]

It can be done, but you MUST take precautions to stop the concentric slave cylinder from over-travelling, as that leads to failure. I have seen this personally many times. The concentric slaves were developed for race use, where lightness is all and serviceability counts for little as things get torn down and rebuilt regularly.

In the kit car world, people thought these were the best things since sliced bread until they had multiple hydraulic line banjo joint failures and over-travelling issues. These days an external slave is once again seen as the best solution.

Just my 2ps worth.

i understand what your saying regarding the critical gap, as it happens this one works without a stop and doesn't over travel. The first one I did was with a cheap bearing and the seals failed this one is a Tilton and all good after a year plus. Not had to top up at all so far. I just couldn't get a smooth standard clutch, hats off to those that can may be there was something inherently wrong with mine but I lost patients with it and went this route.

[Stagdad]

Wilf.
If Steve's done it will be done well.
I was under the impression that CSC's were fitted to most modern manual cars.

Yep your correct Jonh so it's proven tech.