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mattsmadmini
PostPosted: Tue Oct 04, 2011 4:38 pm 
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Is it the case of swap master cylinder and T piece, and doneski's?

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Morris 1100
PostPosted: Tue Oct 04, 2011 4:44 pm 
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mattsmadmini wrote:
Is it the case of swap master cylinder and T piece, and doneski's?
You also need to add the regulating valve on the rear sub-frame.
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Bubbacluby
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PostPosted: Tue Oct 04, 2011 5:31 pm 
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Would have thought i would be illegal to change to this??

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Morris 1100
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PostPosted: Tue Oct 04, 2011 5:32 pm 
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Not if the car was built with a single circuit and it is being converted back.
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Bubbacluby
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PostPosted: Tue Oct 04, 2011 5:36 pm 
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Morris 1100 wrote:
Not if the car was built with a single circuit and it is being converted back.


Oh ok, i thought he may have been wanting to change a late leyland mini to single circuit brakes.

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Morris 1100
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PostPosted: Tue Oct 04, 2011 5:37 pm 
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Bubbacluby wrote:
Morris 1100 wrote:
Not if the car was built with a single circuit and it is being converted back.


Oh ok, i thought he may have been wanting to change a late leyland mini to single circuit brakes.

He probably is. I was just acting as decoy.
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PDJ
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PostPosted: Tue Oct 04, 2011 6:38 pm 
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Why would you go from a duel to single circuit though?
Are there any benefits?

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Morris 1100
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PostPosted: Tue Oct 04, 2011 6:41 pm 
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PDJ wrote:
Why would you go from a duel to single circuit though?
Are there any benefits?

Improved reliability and better pedal feel.
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drmini in aust
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PostPosted: Tue Oct 04, 2011 6:42 pm 
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Ummm the dual (tandem MC) on Minis didn't really work.
Crack a rear bleed nipple open and you had no brakes anyway, we found on Mini GT's Starlet Mini.
Tandem MC was fitted to `comply' with ADRs back then. Didn't mean it had to work...
They are also a PITA to overhaul compared to a single.

[edit] BTW I'm only talking about the Oz tandem MC here, not the totally different MC + servo fitted to later Rovers.

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Last edited by drmini in aust on Tue Oct 04, 2011 6:54 pm, edited 1 time in total.

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Morris 1100
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PostPosted: Tue Oct 04, 2011 6:49 pm 
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drmini in aust wrote:
Ummm the dual (tandem MC) on Minis didn't really work.
Crack a rear bleed nipple open and you had no brakes anyway, we found on Mini GT's Starlet Mini.
Tandem MC was fitted to `comply' with ADRs back then. Didn't mean it had to work...
They are also a PITA to overhaul compared to a single.

I have a magazine article from the 70s where the Leyland engineers were complaining about the push for dual circuit brakes in upcoming ADRs. They pointed out the number of moving parts and potential for unsuspected failure with dual circuits brakes vs the reliability of a single circuit. They were right!
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PDJ
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PostPosted: Tue Oct 04, 2011 7:06 pm 
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Will you have to sit in the naughty corner if you get caught with single circuit on a late 70's car though?

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drmini in aust
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PostPosted: Tue Oct 04, 2011 7:33 pm 
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PDJ wrote:
Will you have to sit in the naughty corner if you get caught with single circuit on a late 70's car though?

I have a 1977 van, it is (and I think always has been) single circuit.
Maybe because it's a commercial?

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mattsmadmini
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PostPosted: Tue Oct 04, 2011 9:41 pm 
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Morris 1100 wrote:
Bubbacluby wrote:
Morris 1100 wrote:
Not if the car was built with a single circuit and it is being converted back.


Oh ok, i thought he may have been wanting to change a late leyland mini to single circuit brakes.

He probably is. I was just acting as decoy.


:lol:

Thanks Morris...

I ask this for PDJ (who has piped up in this thread) as he has a mid 70's moke with a rusty dual MC system which will need replacing, so i figured a nice new plastic MC single system would be nicer and give a better pedal.

As with most things mini related, if the cops were to pull you over i doubt they would notice that the car has a single system rather than a dual...

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“A turbo: exhaust gasses go into the turbocharger and spin it, witchcraft happens and you go faster.” - Jeremy Clarkson
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Morris 1100
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PostPosted: Tue Oct 04, 2011 9:46 pm 
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They would have to know Minis and know the ADRs.
There is more chance getting caught by an insurance company after an accident (to get out of paying out a claim) than getting caught and defected on the road.
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Goldbrocade_62
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PostPosted: Wed Oct 05, 2011 3:18 pm 
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My sister had a 998LS in the mid 90's it was converted to single by previous owner and warning lights removed and retrimmed failed its rego had to put it dual system
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