slave and release bearing differences on a cerby
Discussion
What is the differences between the early and late slave cylinder on a cerby?
Also are there two types of release bearing types, and if so what is the difference?
If anyone could help or knows it would be greatfully appreciated. It would help me with my clutch problems!
Many thanks
Alex
Also are there two types of release bearing types, and if so what is the difference?
If anyone could help or knows it would be greatfully appreciated. It would help me with my clutch problems!
Many thanks
Alex
alex200mph said:Spot on!!!
My feeling is that the bearing should not run on the fingers. I stand to be corrected but if the bearing runs on the fingers when slave is fully back, when the slave is fully extended the slave will overstress the fingers due to having too much travel.
But what do I know!
My new Kevlar clutch has been built to have 6mm of clearance between the release bearing and the diaphragm spring fingers.
The problem is that the AP unit is constantly being over-travelled, so that the spring's natural elasticity point is passed, causing the plate to distort over time, and as a result it sits higher than original designed, leading to the release bearing constantly running on the fingers. Not Good
All I have to do now is find time to go and collect my clutch.!!!!!!!
crazycats said:
My feeling is that the bearing should not run on the fingers. I stand to be corrected but if the bearing runs on the fingers when slave is fully back, when the slave is fully extended the slave will overstress the fingers due to having too much travel.
But what do I know!
Spot on!!!
My new Kevlar clutch has been built to have 6mm of clearance between the release bearing and the diaphragm spring fingers.
The problem is that the AP unit is constantly being over-travelled, so that the spring's natural elasticity point is passed, causing the plate to distort over time, and as a result it sits higher than original designed, leading to the release bearing constantly running on the fingers. Not Good
All I have to do now is find time to go and collect my clutch.!!!!!!!
This is what I was thinking, but how does the bearing return to home without being pushed by the spring?
As the clutch pedal is released after the gearchange the master will come back and pull the fluid out of the slave. This will bring the slave and release bearing back to its start position, with if its engineered correctly some free play between the release bearing and the clutch fingers.
I am still however trying to find out what differences the early and late slave cylinders have and if there are two types of release bearings? If the two types have a different start position and if they have a different stroke?!! Anybody know?!
>> Edited by alex200mph on Tuesday 7th June 14:47
I am still however trying to find out what differences the early and late slave cylinders have and if there are two types of release bearings? If the two types have a different start position and if they have a different stroke?!! Anybody know?!
>> Edited by alex200mph on Tuesday 7th June 14:47
alex200mph said:
As the clutch pedal is released after the gearchange the master will come back and pull the fluid out of the slave. This will bring the slave and release bearing back to its start position, with if its engineered correctly some free play between the release bearing and the clutch fingers.
I still cant see how this would work, but I am sure it does!
lol, that's not how it works .. the diaphragm spring pushes the slave back, the release bearing is in contact with the diaphragm all the time.
the throw of the slave is purely a function of the fluid displaced by the master cylinder and their relative bore sizes, if you want to prevent overthrowing of the slave you have to limit the master cylinder throw.
the throw of the slave is purely a function of the fluid displaced by the master cylinder and their relative bore sizes, if you want to prevent overthrowing of the slave you have to limit the master cylinder throw.
I guess that limiting the slave cylinder throw on the master is simply a question of putting the biting point a long way down on the clutch pedal travel by adjusting the rod going from the pedal to the master. A bit finger in the air stuff though since you cant adjust it while looking at the clutch and slave in the car!
A better way would be to have an adjutable slave cylinder so that you could say:
Slave clinder total travel - travel need to operate clutch = amount of free play between release bearing and clutch fingers (in fully pushed back position)
That way its not possible to overthrow the slave and put extra stress on the clutch fingers??
Any ideas?
>> Edited by alex200mph on Tuesday 7th June 16:33
A better way would be to have an adjutable slave cylinder so that you could say:
Slave clinder total travel - travel need to operate clutch = amount of free play between release bearing and clutch fingers (in fully pushed back position)
That way its not possible to overthrow the slave and put extra stress on the clutch fingers??
Any ideas?
>> Edited by alex200mph on Tuesday 7th June 16:33
joospeed said:
lol, that's not how it works .. the diaphragm spring pushes the slave back, the release bearing is in contact with the diaphragm all the time.
the throw of the slave is purely a function of the fluid displaced by the master cylinder and their relative bore sizes, if you want to prevent overthrowing of the slave you have to limit the master cylinder throw.
Like wot he said
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