Jump to content


Photo
- - - - -

1966 Cooper Brakes


  • Please log in to reply
13 replies to this topic

#1 AC&SONS

AC&SONS

    Mini Mad

  • Noobies
  • PipPipPipPip
  • 108 posts
  • Location: Sheffield

Posted 28 November 2020 - 08:32 PM

So, I recently bought a 1966 Austin Cooper in show condition but I have a question regarding the brakes. It has previously had Cooper S discs and calipers fitted but they don't inspire much confidence.

 

Obviously, there is no servo assistance but the pedal just feels dead and I was wondering if a change of pads would improve things.

Any advice would be appreciated.

 

Thanks

 

Andrew

 

Attached File  _MG_9984.JPG   86.98K   3 downloads



#2 nicklouse

nicklouse

    Moved Into The Garage

  • Members
  • PipPipPipPipPipPipPipPipPipPipPip
  • 14,914 posts
  • Location: Not Yorkshire
  • Local Club: Anonyme Miniholiker

Posted 28 November 2020 - 08:42 PM

Changing the pads may change the feel. Or maybe you just need to stamp on them a few times to get them back into shape.



#3 Cooperman

Cooperman

    Uncle Cooperman, Voted Mr TMF 2011

  • TMF+ Member
  • PipPipPipPipPipPipPipPipPipPipPip
  • 22,137 posts
  • Location: Cambs.
  • Local Club: MCR, HAMOC, Chelmsford M.C.

Posted 28 November 2020 - 11:00 PM

Cooper 'S' 7.5" brakes do require quite a lot of pedal pressure unless the servo is fitted. All Cooper'S's had the servo as standard.

I once tried my 1964 'S' with the servo removed and didn't like it at all. I felt that there was little 'progressive feel' and when I pressed hard I locked the front wheels up. The servo was re-fitted and all was well again.

If you do fit the as-original servo, it is a good idea to use braided flexible (Aeroquip) lines so that if you need to remove the engine or the clutch cover, you can just undo the servo mounting bolts and hang it over the LH wing on a blanket. That way, re-bleeding is unnecessary.



#4 beardylondon

beardylondon

    One Carb Or Two?

  • TMF+ Member
  • PipPipPipPipPipPipPip
  • 806 posts
  • Location: London

Posted 28 November 2020 - 11:42 PM

I’ve been running Cooper S 7.5” brakes on my Mk1 for 20 years without a servo, but it does have the later master cylinder. Granted I don’t do many miles, but I never felt the need for one.
My 1990 is obviously servo assisted, and I’ve only had it a year, but I guess it is easier.

#5 Daz1968

Daz1968

    Up Into Fourth

  • Members
  • PipPipPipPipPipPipPipPipPip
  • 2,019 posts
  • Location: Dudley

Posted 29 November 2020 - 12:27 AM

What master cylinder is fitted because 998 Cooper had a 0.625 bore cylinder and this is much better for none servo discs, my Cooper had a 0.7 bore cylinder and I had similar issues and changing to correct bore made a big difference.



#6 AC&SONS

AC&SONS

    Mini Mad

  • Noobies
  • PipPipPipPip
  • 108 posts
  • Location: Sheffield

Posted 29 November 2020 - 04:38 PM

What master cylinder is fitted because 998 Cooper had a 0.625 bore cylinder and this is much better for none servo discs, my Cooper had a 0.7 bore cylinder and I had similar issues and changing to correct bore made a big difference.

How will I check what size cylinder is fitted; will it have the number in an obvious place?

 

Thanks



#7 beardylondon

beardylondon

    One Carb Or Two?

  • TMF+ Member
  • PipPipPipPipPipPipPip
  • 806 posts
  • Location: London

Posted 29 November 2020 - 06:38 PM

Take a photo and post here, someone will know

#8 AC&SONS

AC&SONS

    Mini Mad

  • Noobies
  • PipPipPipPip
  • 108 posts
  • Location: Sheffield

Posted 29 November 2020 - 07:37 PM

Take a photo and post here, someone will know

will do, cheers



#9 AC&SONS

AC&SONS

    Mini Mad

  • Noobies
  • PipPipPipPip
  • 108 posts
  • Location: Sheffield

Posted 01 December 2020 - 08:59 PM

Take a photo and post here, someone will know

How do I upload a photo; tried to put one on but an error occurred so I'm not sure where to go from here.

Cheers



#10 sonikk4

sonikk4

    Twisted Paint Polisher!!!

  • Admin
  • PipPipPipPipPipPipPipPipPipPipPip
  • 15,075 posts
  • Name: Neil
  • Location: Stone Cross
  • Local Club: EDMC

Posted 01 December 2020 - 09:26 PM

 

Take a photo and post here, someone will know

How do I upload a photo; tried to put one on but an error occurred so I'm not sure where to go from here.

Cheers

 

 

https://www.theminif...onto-tmf/page-5



#11 AC&SONS

AC&SONS

    Mini Mad

  • Noobies
  • PipPipPipPip
  • 108 posts
  • Location: Sheffield

Posted 03 December 2020 - 07:43 PM

Hope this photo helps somebody identify what size master cylinder is fitted.

 

Thanks

 

 

SnE0S4G.jpg



#12 nicklouse

nicklouse

    Moved Into The Garage

  • Members
  • PipPipPipPipPipPipPipPipPipPipPip
  • 14,914 posts
  • Location: Not Yorkshire
  • Local Club: Anonyme Miniholiker

Posted 03 December 2020 - 07:57 PM

Not really other than saying is is not an S one as they were taller than the clutch MC. 

it could be one of three sizes but most likely .70 as the other two are NLA.
 



#13 AC&SONS

AC&SONS

    Mini Mad

  • Noobies
  • PipPipPipPip
  • 108 posts
  • Location: Sheffield

Posted 04 December 2020 - 12:16 AM

OK, I might just try some different pads and if this doesn't make a difference, it looks like I'll just have to put up with it.

Cheers



#14 DB1380

DB1380

    Stage One Kit Fitted

  • TMF+ Member
  • PipPipPip
  • 55 posts
  • Location: Ipswich

Posted 04 December 2020 - 10:25 AM

I've got 7.5 S discs without a Servo on my 1380....Yeh, they work fairly well, but you Dont really want to be Tail Gating someone in front of ya !!

 

I think we have to remember they are quite small Discs and Pads and we are all used to the brakes on modern cars.

 

Might fit a Servo on mine one day.

 

DB.






1 user(s) are reading this topic

0 members, 1 guests, 0 anonymous users

Mini Spares