flexi brake hoses

[Richard Dryden]

Looking for a bit of advice, I'm building a siera based roadsters and was just wondering how to decide what length the flexi hoses need to be to go from the solid copper tube to the discs on the front and the drums on the back. Furthermore where have you all sourced them from.

Cheers in advance.

[K4KEV]

Voucht on here is your man to talk to re brake hoses

[voucht]

Thanks Kev

Hi Richard,

For book chassis, (Sierra, front discs brakes) front lines should be 450mm long overall. Set-up is:
- straight fixed male M10x1.00 fitting on calliper end
- straight fixed bulkhead male M10x1.00 fitting + M10x1.00 lock nut on chassis end

But for the rear, there are differences. For example, on my chassis, I welded the rear brake line brackets under RS7/RS7a, which makes more sense to me than the book design. So my rear lines are 450mm long overall as well. If your brackets are placed like in the book, the brake lines would need to be a bit longer I think, and you'll have to measure them: using a 1-strand copper electric cable to mock up the flexi route is a very good way to take the measurement. Overall length of the flexi should be measured from the seat inside the fitting on the copper pipe to the seat inside the rear drum cylinder. Plan for wheel vertical movement as well

The rear brake line set up will also depend on if you put the bit of copper pipe between the drum cylinder and a bracket welded on the rear upright as explained in the book, of if you want to go straightly into the drum cylinder with a 45° male fitting. See details on this page: https://sites.google.com/site/hydrau...s/special-case

There is a third option, which depends on the origin of your rear uprights. If they are from Talonmotorsport, like mine, you can use a fixed male fitting to go directly into the drum cylinder (see this album on my flick-r pictures https://www.flickr.com/photos/994983...57646841607980)

So :
Copper bit like in the book :
- straight fixed male M10x1.00 fitting on drum end
- straight fixed bulkhead male M10x1.00 fitting + M10x1.00 lock nut on chassis end

45° direct-to-drum-cylinder :
- 45° swivel male M10x1.00 fitting on drum end
- straight fixed bulkhead male M10x1.00 fitting + M10x1.00 lock nut on chassis end

"Talon style" rear uprights :
- straight fixed male M10x1.00 fitting on drum end
- straight fixed bulkhead male M10x1.00 fitting + M10x1.00 lock nut on chassis end

Hope this will help

Good luck.

[NeilW]

I am pleased this post was made, I was just about to post the same thing.
Great info, especially the tip with the wire. I am running disks at the rear so I am sure that method will help.
Any idea of recommended suppliers?

[voucht]

Originally Posted by NeilW

Any idea of recommended suppliers?

I'm no longer working for the company manufacturing the 100% stainless steel brake lines (we supplied a lot of builder on here), but I'm pretty sure they will be OK to keep on supplying forum members. Please send me your specs by PM (fittings at each end, overall length, colour*), and I'll get you a quotation.

* the stainless steel braided Teflon hose comes with a PVC cover available in 26 colours:
Anthracite grey
Silver grey
Blue
Denim Blue
White
Neon Blue
Turquoise Blue
Yamaha Blue
Carbon Look
Clear* (not coloured)
Gold
Clear* Gold
Yellow
Clear* yellow
Military Green
Mauve
Black
Clear* black
Orange
Clear* orange
Red
Clear* Red
Pink
Green
Purple
Clear* green
Dull Black
* Clear = see through
If you want no colour, chose the “Clear (not coloured)” cover, it is non-coloured see-through PVC cover, so it keeps the natural look of the stainless steel braid.


Thanks!

[K4KEV]

Originally Posted by NeilW

I am pleased this post was made, I was just about to post the same thing.
Great info, especially the tip with the wire. I am running disks at the rear so I am sure that method will help.
Any idea of recommended suppliers?

I'd have sent you the same place mate, his/was brake lines are well tidy check mine on my build thread

[flyerncle]

Sylvain,this has been a question on my mind everytime I see full flexible stainless pipes used,what difference if any is there to the overall brake pressure,as against using metal pipe and flexy's.

And this is not meant to put anybody off using them as the quality is second to none as others will say too.