Brake hose connections

carlitox33

carlitox33

Full member
Location
Madrid, Spain
Hi guys,

I?m ready to install some brand new braided brake hoses to the 1200. Had them covered in black, all is well. I could not find a straight connector, so I ended up using 90? elbows at the front brake "distributor", from where the hoses go to the metallic tubes that go to the calipers.

I assumed that the old & new threads would be the same, but I seem to have a problem when screwing the "tube". In this picture you can see old hose on the upper left side, and the new hose on the upper right side. Below, the tube that goes to the caliper.




The thread seems to start, but only goes in a bit (perhaps a turn, or one and a half turn), and is not airtight. Don?t want to force it too much, so I don?t break it.

Can you help me? Have I got different size threads?

Cheers.
 
Looks the same thread to me only difference is the depth of threads. You could possibly get away with using a shoulder less brake nut from something like a Japanese car or ask the manufacturer for their advice.
 
I?ve found today that they are both the same thread, but as DJA982 says, it?s the depth that doesn?t allow it to fit. I?m trying to find an adapter of some kind. I?ve found a page with a wide range of adaptors, and I?m talking to them. (https://www.racingmotorshop.es/19411964-adaptador-acoplamiento#)

I could have never imagined brake connections world was so complex... Why can?t they just use standards?

Cheers
 
I have used Spiegler brake hoses on my 3C (www.spiegler.de), they supplied even the proper ones for the early 3C models w/o oil coller. Needless to say that the threads fitted perfectly well. As far as I can spot on the picture, you have just bought the wrong type of hoses, seems to be the type to be combined with separate threaded banjo fittings.
 
Gravelroad said:
I have used Spiegler brake hoses on my 3C (www.spiegler.de), they supplied even the proper ones for the early 3C models w/o oil coller. Needless to say that the threads fitted perfectly well. As far as I can spot on the picture, you have just bought the wrong type of hoses, seems to be the type to be combined with separate threaded banjo fittings.
Click to expand...

You are right, gravelroad. I?ve used those hoses, and I was pretty sure I would be able to screw both connectors together; but I was wrong. I am trying to find an "adapter"/"converter" that allows me to do the connection.

 
"I could have never imagined brake connections world was so complex... Why can?t they just use standards?"

there are standards, Brembo and Italian bikes generally use M10x1.00mm (that's the pitch dimension)
Japo bikes generally use M10x1.25mm pitch.

CLEM
 
You?re right Clem. That?s what I initially thought when I saw the fittings; but didn?t count in the fact that there would be a difference, not in the threads, but in their depths.

Still searching for a solution. Have found a couple of places with tons of adapters. We?ll see tomorrow.

Cheers.
 
I suspect the hose threads are actually 3/8-24[tpi] or -3 AN which are really close to 10x1.0 . The adapter you probably need is a 10x1.0 female,concave seat to -3AN. These are what I used on my 3CL when I replaced the hoses. The adapters conveniently fit in the holders[with a bit of rubber hose] that the old brake hose fit into on the fork leg. I got mine from Pegasus Auto Racing.com here in the US, p/n 3265-18  It is a fairly common piece so I imagine euro suppliers would have it.
 
wdietz186 said:
I suspect the hose threads are actually 3/8-24[tpi] or -3 AN which are really close to 10x1.0 . The adapter you probably need is a 10x1.0 female,concave seat to -3AN. These are what I used on my 3CL when I replaced the hoses. The adapters conveniently fit in the holders[with a bit of rubber hose] that the old brake hose fit into on the fork leg. I got mine from Pegasus Auto Racing.com here in the US, p/n 3265-18  It is a fairly common piece so I imagine euro suppliers would have it.
Click to expand...

Thank you so much. I had identified the part locally (https://www.racingmotorshop.es/adaptador-acoplamiento/593-adaptador-goodridge-macho-hembra-38x24-10x100.html), but was not 100% sure. Funny enough, the pic P/N you sent is 100% the one I found here; so I feel confident now. I?ll order them right away.

Many thanks!!!
 
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