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Old 07-14-2013, 06:25 PM
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stephen low stephen low is offline
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Join Date: Aug 2001
Location: Melbourne, Australia, Vic
Cobra Make, Engine: G-Force Mk I, 5L Windsor, TKO 600, enhanced Jag / Koni suspension & LSD Diff.
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Another short update -

Having finally bleed the system to be sure of proper operation I did measurements as to the fork movement at clutch pedal rest, full depression and just at point of release.

I needed this knowledge to determine whether I could increase my slave sizing to increase hydraulic force at the expense of reduced fork movement.

The photos below show the results - excuse the quality but the camera was struggling to take clear photos.

Slave set up and measuring reference.



Movement markings and travel distances

The 100mm mark represents clutch pedal at rest, the mark at 74mm represents full pedal depression and at 82mm the release point when the wheels would rotate.



Translated at the thrust bearing this means I am at correct or slightly over depressing at full travel. So I don't believe I have sufficient travel to change the slave as an option.

I am going to double check these travel distances on the bellhousing and fork too now that this is all apart, as I ended up dropping the gearbox out on Saturday.

I will get the Mcleod clutch fingers tested to see how much stiffer these are compared to a standard AU clutch option I could use as one choice.

I also have an opportunity to use a McLeod internal hydraulic system but reading the McLeod tech advice they suggest a 3/4 master and a pedal ratio of 6:1 anyway.

Finally I am also going to review how I can properly raise the master neatly to improve the pedal pressure in my favour. But I'll also measure how this affects plunger stroke so I have all the rights facts to hand.

I was never going to just make a hole higher up the pedal and re-attach as the misalignment in the master would ultimately be detrimental for sure.

So not yet fixed but clearly it will be.

Thanks for all the advice guys it has been a learning curve for sure.

Steve
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