New brake pipes - recommendations ?

Blue · Post by **Blue** » Thu Sep 23, 10 5:08 pm

Good. You'll find installation is easier using copper or Kunifer line, you'll need to bend them about to install them, far easier straightening them out again in situ than steel tube. No doubt the factory installed the front to rear line and the one across the bulkhead to the bare shell before anything was in the way.

RW71 · Post by **RW71** » Thu Sep 23, 10 6:47 pm

Morgan, I have got a small hand held pipe bender like the one in the picture, specifically for 3/16 tubing. Useful little thing, came in very handy when I bent my kunifer brake lines up. You are more than welcome to borrow it.

Rich.

Blue · Post by **Blue** » Thu Sep 23, 10 7:11 pm

Yes, I've got one of those as well, very handy. I've got another one for larger bends also. I use a Sykes Pickavant flaring tool that fits in a vice to make life really easy.

latil · Post by **latil** » Thu Sep 23, 10 7:22 pm

Yep,that's the Sykes kit I have,although mine is the earlier version without the turret style formers.And it's in a quality tin box

db · Post by db » Fri Sep 24, 10 5:32 pm

Whats a Kunifer line?

I got a 9.99 ebay flaring kit- utter utter Bananarama!

Blue · Post by **Blue** » Fri Sep 24, 10 5:49 pm

It's a copper nickel alloy,

http://www.bennetts.com/brake-tools/kun ... 13657-.php

I struggled with cheap flaring tools for years, they really are a waste of money.

MilesnMiles · Post by **MilesnMiles** » Sat Sep 25, 10 7:38 am

I'm using the copper/nickel stuff. its good and you can bend it by hand or around a large socket etc.. whilst working in situ, unlike steel.

Dave999 · Post by **Dave999** » Mon Sep 27, 10 9:53 am

PS don't forget to do an expansion coil for each set of pipes up near the master cylinder

otherwise you will pull you nice new falred joints when it gets hot.

Dave

morgan · Post by **morgan** » Mon Sep 27, 10 12:26 pm

Dave999 wrote:PS don't forget to do an expansion coil for each set of pipes up near the master cylinder

otherwise you will pull you nice new falred joints when it gets hot.

Dave

I always wondered what the loops were for. That makes sense...

Anonymous · Post by **Anonymous** » Mon Sep 27, 10 2:21 pm

Helix's more particularly there to stop the pipes fatigue fracturing from vibration.

Dave, you sure brake fluid expands with heat? Put your brakes on with a blow torch?

Dave999 · Post by **Dave999** » Mon Sep 27, 10 3:35 pm

well anything that is alternativly compressed and allowed to expand heats up so the brake fluid will get warmer
and so will the rubber cups in the cylinders

and the cars need to work in alaska and arizona

brake fluid doesn't compress very much so it won't heat up much (well not like a gas anyway) but as everything does to some extent.....mmmm

but granted you could be onto a thing there.
in fact you probably are

brakes also heat up
copper being copper(alloy) its quite good at takeing that heat from the fluid and spreading it a long way so the brake fluid will get hot and the copper expands. flexis will be ok but the copper runs along the car will get longer when warm and they usually just run in rubber lined D clamps and rubber hgrohmhets. (is there an h in gromets?)

brake fluid is also a water magnet.
Any dissolved water boils out when hot and makes for a spongy peddle
steam is very good at tranfering heat enegrey to places where you would't expect

so i was thinking......(granted thats often a bad thing)

Just like you should always allow for expansion in your exhaust (rubber doughnuts, mounts a little too far back when welded to the car look correct when exhaust is hot etc) you should in other metal pipe-age

if you agree to a combo of the two i'll give ya 50p

either way factory paid money to some fella to come up with the idea. extra 6 inches of pipe per car and your selling 100,000 of em

it all adds up

so it should be there again when replaced

Dave

Dave999 · Post by **Dave999** » Mon Sep 27, 10 3:43 pm

Clivey wrote:Helix's more particularly there to stop the pipes fatigue fracturing from vibration.

Dave, you sure brake fluid expands with heat? Put your brakes on with a blow torch?

hang on

you don't want the pipe to fracture

so you make a spring in it?????

i.e more pipe to fracture and coiled in a way that promotes vibration at a predetermined harmonic based on material, coil size and some other stuff i can't remeber

i smell fish and its dog eggs for supper all round

dave

Dave999 · Post by **Dave999** » Mon Sep 27, 10 3:58 pm

hey used to have a bit of fun when i was teach

split class into groups

bunsen burner on ferocious setting

give each kid an equal length and diameter rod of material
make sure the truely deserving kids got the copper
make sure the rest got glass or wood bakelite etc

have a copetition to see who could keep their rod in the flame the longest

smashing

think they term that bulling now

to me it was a lesson that needed teaching

glass you get some warning
copper goes ok to sore hand in seconds

heheheheheheh

they used to get their own back

filled me bag and jacket pockets with lead shot
and nicked me wallet and fags

obviously couldn't run after them when i weighed 95 stone

conduction and density taught and learned to great effect

they never filled me jacket with feathers or polystyrene

Dave