What have you bought today?

[Mottie]

I use copper tubing when I’m replacing brake pipes. Very easy to work with.

 

[Brigadier]

Pure copper tubing is how ever unsuitable for brake lines

Why?


Malleability = too easy for it to bulge under pressure?

 

[Harry Bloomfield]

Why?


Malleability = too easy for it to bulge under pressure?

Irrespective of the pipe material, a regular test of mine, before leaving my garage, is to stand as hard as I possibly can on the brake pedal, with engine running. Far more pressure than I could possibly apply once on the road. If they are going to bulge, or burst, it would happen safely whilst stood. I do at the moment, have most of the pipework length swapped to copper and have never had copper bulge or burst.

 

[JohnD]

I thought it was a special alloy with ?nickel?

 

[Mottie]

Irrespective of the pipe material, a regular test of mine, before leaving my garage, is to stand as hard as I possibly can on the brake pedal, with engine running. Far more pressure than I could possibly apply once on the road. If they are going to bulge, or burst, it would happen safely whilst stood. I do at the moment, have most of the pipework length swapped to copper and have never had copper bulge or burst.

I’ve had hoses and pipes burst about a dozen times during my time as a tester using that method when carrying out a mot test.

 

[Harry Bloomfield]

I’ve had hoses and pipes burst about a dozen times during my time as a tester using that method when carrying out a mot test.

I have only had it happen once, and it was on the road, on a downhill, with a single circuit braking system, early in my driving career. Very scary! Which why I now conduct my regular static test.

 

[transam]

Afaik there are different grades of copper for brake lines

I had a reel that was fairly stiff compared to soft copper that one uses in plumbing ?? As John D said
It had some type of alloy added to it afaik

Not sure if the actual pressure that occurs in a brake line when braking hard

Saw some thing that said 2000 psi ????

 

[Brigadier]

A Golf Pride Tour Velvet grip.

 

[Mottie]

A Golf Pride Tour Velvet grip.

Is it rainbow coloured?

 

[JohnD]

A Golf Pride Tour Velvet grip.

From Lovehoney?

 

[Justin Passing]

Kunifer was the stuff to use, iirc.
Doesn't work harden as readily as copper.

 

[Brigadier]

Is it rainbow coloured?

Hopefully a rainbow trajectory (of the ball, from a booming drive)

 

[motorbiking]

A pair of Steiner 7x50 Navigator Marine Binoculars.

 

[Harry Bloomfield]

Some 6mm galv threaded rod. I bought a used pair of roof bars for the car, just assuming they would fit. It turned out that the bars were designed to clamp onto the body, at the door edge - which simply would not work on my car. My car is designed to accept bolted on roof bars, it has 4x 6mm attachment points, for a roof rack.

I tried various ideas to safely attach them, nothing worked, so the final solution is long bolts (threaded rod) via a drilling through the horizontal bar, screwed into the proper attachment points in the roof.

 

[motorbiking]

I think you needed T bolts.