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badhuis
Joined: 20 Aug 2008 Posts: 1390 Location: Netherlands
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Posted: Fri Jan 05, 2018 1:15 pm Post subject: Brake line corrosion |
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Some brake lines on my Jaguar 420 show rust. So I took out the worst and made a new one. What surprised me though is how thick the walls are of a brake line tube. The "bad" pipe has corrosion on the outside yes, but no way it is even near of a failure.
That said it is never bad to replace any corroded brake lines of course.
(never mind the fluffy threads in the pics - I had cleaned it with a cloth just before making the pics)
_________________ a car stops being fun when it becomes an investment |
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Phil - Nottingham
Joined: 01 Jan 2008 Posts: 1252 Location: Nottingham
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Posted: Sat Jan 06, 2018 8:08 am Post subject: |
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Corrosion pits in the tube can easily fail under the huge pressure of heavy breaking.
Its only because it cheap that this antiquated steel Bundy is still used in new cars but you only 1 tiny pin hole as the dangerous weak link in the chain _________________ Rover P2
Rover P4
Rover P5 & P5B
Land Rover S2 & S3
Morris Mini Traveller Mk2 |
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Bitumen Boy
Joined: 26 Jan 2012 Posts: 1735 Location: Above the snow line in old Monmouthshire
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Posted: Sat Jan 06, 2018 11:28 am Post subject: |
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Phil - Nottingham wrote: | Corrosion pits in the tube can easily fail under the huge pressure of heavy breaking.
Its only because it cheap that this antiquated steel Bundy is still used in new cars but you only 1 tiny pin hole as the dangerous weak link in the chain |
Absolutely. IMO it should have been banned years ago for new cars, it's utterly barking that ABS has to fitted by law but it's absolutely fine to use corrosion prone steel brake pipes. |
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troutrunner
Joined: 03 Dec 2012 Posts: 185 Location: South Lincolnshire
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Posted: Sat Jan 06, 2018 3:08 pm Post subject: |
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I think that ABS systems run at very high pressure, if this is so, this would make rusty pipes even more vulnerable to bursting. _________________ Paul
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1937 Ford Model Y.
1939 Austin 10.
1955 Austin A30.
1958 Ford 300E van.
1961 Austin A40.
1964 Wolseley Hornet.
1965 Series2a Land Rover.
1968 Wolseley Hornet.
1994 Peugeot 405 Est. 2of.
Nil illegitimi Carborundum |
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Kenham
Joined: 12 Mar 2012 Posts: 209 Location: Kent
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Posted: Sat Jan 06, 2018 8:40 pm Post subject: |
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A broken brake pipe or ABS is the same thing really as both mean you can't stop! |
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troutrunner
Joined: 03 Dec 2012 Posts: 185 Location: South Lincolnshire
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Posted: Sat Jan 06, 2018 10:26 pm Post subject: |
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Kenham wrote: | A broken brake pipe or ABS is the same thing really as both mean you can't stop! |
But the higher pressure of the ABS system would fail earlier than normal brake, I think. _________________ Paul
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1937 Ford Model Y.
1939 Austin 10.
1955 Austin A30.
1958 Ford 300E van.
1961 Austin A40.
1964 Wolseley Hornet.
1965 Series2a Land Rover.
1968 Wolseley Hornet.
1994 Peugeot 405 Est. 2of.
Nil illegitimi Carborundum |
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Kenham
Joined: 12 Mar 2012 Posts: 209 Location: Kent
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Posted: Sun Jan 07, 2018 10:59 am Post subject: |
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Yes quite agree it would, a lot more pressure with ABS , servo's , and traction control all putting more strain on the braking systems. ABS is a pet hate of mine , the work of the devil, why make a perfectly good braking system them introduce a system to stop it working, madness. If anyone on here is new to towing heavy trailers beware as when the ABS comes on the overrun trailer brakes stop working . Sorry if I am getting off subject. |
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Ray White
Joined: 02 Dec 2014 Posts: 6316 Location: Derby
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Posted: Fri Jan 19, 2018 2:39 am Post subject: |
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What do we think of CUNIFER tubing for brake pipes? Personally, I like it. Copper (Cu) Nickel (NI) iron (Fe) has been around since the 1970s and comes in various sizes: 4.8mm, 6.35mm and 8mm diameters. It is typically sold in 25 ft lengths. Exposed lengths can be sheathed in armour covering if you are worried about the risk of it getting snagged. Very easy to handle. |
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troutrunner
Joined: 03 Dec 2012 Posts: 185 Location: South Lincolnshire
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Posted: Fri Jan 19, 2018 9:00 am Post subject: |
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Hi Ray,
I have used it in the past but lately have gone over to copper, I think that copper is a little softer and slightly more pliable to use but having said that cupronickel is easy to use also. I don't think it matters a jot which one you use IMHO. _________________ Paul
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1937 Ford Model Y.
1939 Austin 10.
1955 Austin A30.
1958 Ford 300E van.
1961 Austin A40.
1964 Wolseley Hornet.
1965 Series2a Land Rover.
1968 Wolseley Hornet.
1994 Peugeot 405 Est. 2of.
Nil illegitimi Carborundum |
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D4B
Joined: 28 Dec 2010 Posts: 2083 Location: Hampshire UK
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Posted: Fri Jan 19, 2018 1:55 pm Post subject: |
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I have always used Kunifer, it can be tough to flare properly tho, but it is certainly more sturdy.
I seem to remember that the MOT test required copper to have more clips / supports due to it being weaker over a long run than steel or cunifer.
Last edited by D4B on Fri Jan 19, 2018 9:57 pm; edited 1 time in total |
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Penguin45
Joined: 28 Jul 2014 Posts: 381 Location: Padiham
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Posted: Fri Jan 19, 2018 4:28 pm Post subject: |
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I use Kunifer. Doesn't rust (steel) or work harden (copper). No problems working it at all.
Bear in mind that copper pipes are now actually illegal in certain countries, Oz being a case in point.
P45. _________________ '67 Wolseley MkI 18/85, '70 Austin MkII 1800 The Landcrab Forum. |
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