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Rear drums & S rear drums
https://ausmini.com/forums/viewtopic.php?f=5&t=35234		 Page 1 of 1
Author:  Fat Boy Dave [ Tue Aug 28, 2007 7:41 pm ]
Post subject:  Rear drums & S rear drums
Is there any difference between regular rear drum brakes and those found a disc brake Mini?
Author:  drmini in aust [ Tue Aug 28, 2007 7:54 pm ]
Post subject: 
There are really only 3 different type drums, they are all same dimensions inside though (7" bore) and take the same brake shoes, 1-1/4" wide on rear..

Flat drums- used on all Minis with 3-1/2" wide rims, including 997-998 Cooper and Clubby.

1" spacered drums- used on Cooper S, Clubman GT and Clubby S.

3/4" spacered drums- used on big wheel Mokes.

Note the Cooper S and Clubby S drums have all the same dimensions, but the Clubby S one has a plain bore in the hub where the Cooper S/GT is cast a fluted shape. Both these drums fit the same...

Note if using spacered drums you need the longer wheel studs... :wink:
Author:  sgc [ Tue Aug 28, 2007 7:58 pm ]
Post subject:  Re: Rear drums & S rear drums
Fat Boy Dave wrote:
Is there any difference between regular rear drum brakes and those found a disc brake Mini?


The slave cylinders on the rear of a disc braked car are smaller than on a drum front, to prevent the rears from locking. Cooper S rear cylinders are ⁵⁄₈" IIRC, while it's common to find ¾" slaves on the rear of a drum braked car.

I'm not sure there's any difference in the drum width...

(Hi from Kingsville, btw :D)

--s
Author:  drmini in aust [ Tue Aug 28, 2007 8:04 pm ]
Post subject: 
S and GT rear wheel cylinders are 5/8" diameter.
It's a good idea to fit these to any drum braked Mini when you fit S front discs or bigger.
Getting sideways on the freeway at 110 cliks is not funny.... as I found out once.
Author:  sgc [ Tue Aug 28, 2007 8:39 pm ]
Post subject: 
drmini in aust wrote:
S and GT rear wheel cylinders are 5/8" diameter.
It's a good idea to fit these to any drum braked Mini when you fit S front discs or bigger.


Yeah, I'm replacing drums with 4-pot 7.5" discs in a few weeks.. going to see how we go with the ¾" rears before swapping them :roll:
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