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 Post subject: Brake Pedal Cooper S
PostPosted: Fri Oct 13, 2017 1:22 pm 
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I remember reading some where that the Cooper S brake pedal is thicker that the standard pedal.

Can anyone confirm this difference and if so does anyone know the dimensions?

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Purchased 1969 Mk2 27/9/2017, lots of wiring to work out
Mini's I've Had
Engine Numbers 9FSAY45020 9FXEY56080 9FSAY51265 9FSAY48408 9FXEY51628 9FSAY46292
Nugget Gold 1275LS VIN XNFAD18Y104200 12H902UH00015
Hi Ho Silver 1275LS 12H902UH000829


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 Post subject: Re: Brake Pedal Cooper S
PostPosted: Fri Oct 13, 2017 1:33 pm 
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Correct. The brake pedal is thicker and also sits up a bit higher.

My brake pedal is 8.27mm and my clutch pedal is 6.35mm. Give or take a few mm for paint.

Attachment:
Brake Pedal 8.27mm.jpg


Attachment:
Clutch Pedal 6.35mm.jpg


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 Post subject: Re: Brake Pedal Cooper S
PostPosted: Fri Oct 13, 2017 2:17 pm 
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Minimatic also has a thicker pedal
Not sure if same height as the S one.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank @7000+, 45 Dellorto, RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. Going harder with Stealth Black Box in.:mrgreen:

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 Post subject: Re: Brake Pedal Cooper S
PostPosted: Fri Oct 13, 2017 2:18 pm 
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Thanks gtogreen1969

Is the Cooper S brake pedal thicker than the standard Mini brake pedal?

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Purchased 1969 Mk2 27/9/2017, lots of wiring to work out
Mini's I've Had
Engine Numbers 9FSAY45020 9FXEY56080 9FSAY51265 9FSAY48408 9FXEY51628 9FSAY46292
Nugget Gold 1275LS VIN XNFAD18Y104200 12H902UH00015
Hi Ho Silver 1275LS 12H902UH000829


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 Post subject: Re: Brake Pedal Cooper S
PostPosted: Fri Oct 13, 2017 2:23 pm 
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Yes it is. Std Mini brake pedal is same thickness as the clutch one.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank @7000+, 45 Dellorto, RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. Going harder with Stealth Black Box in.:mrgreen:

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 Post subject: Re: Brake Pedal Cooper S
PostPosted: Fri Oct 13, 2017 7:21 pm 
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From my limited experience, I reckon that the so called Cooper S brake pedal was standardised in Australian production. My first Mini was a bog standard drum brake manual 1965 Deluxe and it had this thicker pedal. They are easy enough to identify: the foot pad is cranked up a bit higher relative to the clutch, and the pedal arm is roughly 2mm thicker than the clutch pedal and early brake pedals. Also, where the pedal fits into the master cylinder push rod it is machined slightly thinner to match the original thickness. Otherwise Lockheed would have had to produce two types of pushrod...
The earliest brake pedals were prone to twisting when people were standing on the brakes trying to get their single leading shoe brakes to pull up. That is why later 850 brake pedals have a small metal brace welded from the top of the pivot bush housing part way down the arm. Once the Cooper S 1275 was introduced, I suspect Aussie cars at least all used this pedal. Interested to hear the experience of others on this rivet counter topic! :)


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 Post subject: Re: Brake Pedal Cooper S
PostPosted: Fri Oct 13, 2017 7:48 pm 
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I have seen plenty of faked Cooper Ss with a thin pedal the same height as the clutch.

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 Post subject: Re: Brake Pedal Cooper S
PostPosted: Fri Oct 13, 2017 8:18 pm 
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I fitted 998 Cooper discs to a clubby once. The brake pedal in it was way thinner than what's in my 1970 Matic. It used to flex....! So I fitted a servo. :)

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank @7000+, 45 Dellorto, RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. Going harder with Stealth Black Box in.:mrgreen:

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 Post subject: Re: Brake Pedal Cooper S
PostPosted: Sat Oct 14, 2017 6:44 am 
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Location: Canberra
My 1965 Delux had the thicker brake pedal. Could really see the difference with my 1963 850 parked next to it to compare.

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 Post subject: Re: Brake Pedal Cooper S
PostPosted: Sat Oct 14, 2017 7:10 am 
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TartanRed wrote:
From my limited experience, I reckon that the so called Cooper S brake pedal was standardised in Australian production. My first Mini was a bog standard drum brake manual 1965 Deluxe and it had this thicker pedal. They are easy enough to identify: the foot pad is cranked up a bit higher relative to the clutch, and the pedal arm is roughly 2mm thicker than the clutch pedal and early brake pedals. Also, where the pedal fits into the master cylinder push rod it is machined slightly thinner to match the original thickness. Otherwise Lockheed would have had to produce two types of pushrod...
The earliest brake pedals were prone to twisting when people were standing on the brakes trying to get their single leading shoe brakes to pull up. That is why later 850 brake pedals have a small metal brace welded from the top of the pivot bush housing part way down the arm. Once the Cooper S 1275 was introduced, I suspect Aussie cars at least all used this pedal. Interested to hear the experience of others on this rivet counter topic! :)



I don't believe it was a standardised thing. Later they became thicker on clubmans, but obviously the pedal itself is different. I have seen plenty of later roundies with the thinner pedal, and I had a camino gold 71 flapper mini K which definitely had the thinner pedal.

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1962 Mini Speed sports sedan
1968-71 ex-Peter Manton Shell car
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 Post subject: Re: Brake Pedal Cooper S
PostPosted: Sat Oct 14, 2017 8:34 am 
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Thicker brake pedal introduced with the 997 Cooper.


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 Post subject: Re: Brake Pedal Cooper S
PostPosted: Sat Oct 14, 2017 8:45 am 
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wild_willy wrote:
Thicker brake pedal introduced with the 997 Cooper.
You could be right but were they only used on Coopers? I can find a part number on they clutch pedal AYA5067 but nothing on the brake pedal.

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Purchased 1969 Mk2 27/9/2017, lots of wiring to work out
Mini's I've Had
Engine Numbers 9FSAY45020 9FXEY56080 9FSAY51265 9FSAY48408 9FXEY51628 9FSAY46292
Nugget Gold 1275LS VIN XNFAD18Y104200 12H902UH00015
Hi Ho Silver 1275LS 12H902UH000829


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 Profile  
 
 Post subject: Re: Brake Pedal Cooper S
PostPosted: Sat Oct 14, 2017 1:25 pm 
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I just measured my MiniMatic's brake pedal with a micrometer. It is 0.312" thick, ie. 5/16".
The clutch pedal fitted by me (ex Clubby, with the pad trimmed square) is 0.246" thick. I know my 850's brake one was 1/4" thick too.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank @7000+, 45 Dellorto, RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. Going harder with Stealth Black Box in.:mrgreen:

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 Post subject: Re: Brake Pedal Cooper S
PostPosted: Sat Oct 14, 2017 1:36 pm 
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drmini in aust wrote:
I just measured my MiniMatic's brake pedal with a micrometer. It is 0.312" thick, ie. 5/16".
The clutch pedal fitted by me (ex Clubby, with the pad trimmed square) is 0.246" thick. I know my 850's brake one was 1/4" thick too.
I reckon my Brake pedal is 5/16". It was a bit hard to measure with the verniers. Clutch is 1/4".

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