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Clutch Return Spring


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#1 croc7

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Posted 01 May 2019 - 06:39 AM

Why the heavy spring between the clutch lever and the clutch slave tab? What is a good replacement spring?

#2 unburntfuelinthemorning

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Posted 01 May 2019 - 07:18 AM

It pulls the release bearing away from the clutch diaphragm so the bearing doesn't keep turning at engine speed when the is clutch engaged.

 

Not sure why the spring's so heavy as it's a nuisance to fit.



#3 nicklouse

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Posted 01 May 2019 - 08:44 AM

It has a job to do and I have used a few different ones but the original works very well so I use that normally. Should add it must be able to overcome the internal spring force.

Edited by nicklouse, 01 May 2019 - 08:45 AM.


#4 Spider

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Posted 01 May 2019 - 09:04 AM

The older ones were more sensible. I use a throttle spring these days. All it needs do is hold the bearing off the thrust plate when it's not in use.



#5 unburntfuelinthemorning

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Posted 01 May 2019 - 09:43 AM

The older ones were more sensible. I use a throttle spring these days. All it needs do is hold the bearing off the thrust plate when it's not in use.

That seems sensible, I may try that; it'll save potential injuries from trying to hook that heavy spring into place.

 

Also the heavy spring is already noticeably cutting into the clutch arm anchor 2A3601 after only 1000 miles.  Probably because the anchor isn't an original one!



#6 GraemeC

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Posted 01 May 2019 - 01:09 PM

The repro ones are much stronger, why they couldn’t be made nearer the originals I don’t know.
I now use these:
http://www.minispare...|Back to search
But there is also:
http://www.minispare...|Back to search

#7 unburntfuelinthemorning

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Posted 01 May 2019 - 01:31 PM

The older ones were more sensible.

How old do you mean?  The late seventies Minis I had years ago had just as beastly springs. 



#8 Spider

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Posted 01 May 2019 - 06:10 PM

 

These are the ones I've used, but I've also had a few break on one of the sharp bends in the wire.

 

 

 

The older ones were more sensible.

How old do you mean?  The late seventies Minis I had years ago had just as beastly springs. 

 

 

Yes, up to the late 70's (and later). They were a heavy spring, but nothing like what the new ones are I find.



#9 richmondclassicsnorthwales

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Posted 01 May 2019 - 07:37 PM

We all know where the cheap parts come from, and simply - it is the case.

 

The ones who made the good stuff with the correct price tag have all gone bump as they were all undercut.

 

No point in glossing over the simple truth

 

We just have to pay what we would have paid for the good stuff at a price bought for mierda cost


Edited by richmondclassicsnorthwales, 01 May 2019 - 07:41 PM.


#10 Rorf

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Posted 02 May 2019 - 05:25 AM

Springs getting stronger or the left leg getting weaker :proud:



#11 croc7

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Posted 02 May 2019 - 07:29 AM

Wouldn’t the stronger spring tend to affect/degrade the rest of the clutch hydraulic system? Clevis pins, pushrods, spring anchors, clutch slave/master cylinder seals? I’m going with the carb spring.

#12 Ethel

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Posted 03 May 2019 - 10:15 AM

It'll also keep the slave cylinder under pressure on the return stroke and reduce the risk of it sucking air.

 

Really, it'd be better to have it stronger and the pedal and master springs weaker if you were looking to reduce the pedal pressure. Makes you realise how complex engineering a car even as simple as a Mini is.






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