Starting to build up Focus Marex CX. Disc Brake Noob Help

Especially for light weight issues concerning cyclocross / touring bikes & parts.

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Catagory6
Posts: 221
Joined: Thu Feb 09, 2017 2:36 am

by Catagory6

very preliminary stages of the build, and i'm looking at the rear disc brake cable routing.

i've got the front and rear derailleur sleeves threaded thru the down-tube ports, and around the BB cable guide.

but i cant figure out how the rear brake cable housing passes thru the bottom bracket shell, and the bottom bracket spindle

following photo is the port in the head tube for the rear brake cable housing

https://imgur.com/xb7Ha96

https://imgur.com/xb7Ha96

obviously the housing gets routed inside the down tube, but does it go through the center of the bottom bracket shell, through the 2 ports in the following 2 pictures

Image
https://imgur.com/e1eYqCM

Image
https://imgur.com/cpYV4b4

or does it get routed through the same ports the the shifter cables go through (sorry, blurry picture)?

Image
https://imgur.com/YDhRe1F


sorry, i can't figure out how to post pictures. but they're in the links

by Weenie


Catagory6
Posts: 221
Joined: Thu Feb 09, 2017 2:36 am

by Catagory6

i think i might have figured it out.

there's a length of foam tubing that came with the frame set.
is this foam tubing run through the bottom bracket shell, and protect the housing from rubbing on the BB spindle?

Catagory6
Posts: 221
Joined: Thu Feb 09, 2017 2:36 am

by Catagory6

foam rubber running through BB shell, would go underneath bb spindle?

tell me if i'm laughably wrong.

edit: no, that would be stupid. it goes over the spindle. obviously.

Image

https://imgur.com/oH2POBj

Catagory6
Posts: 221
Joined: Thu Feb 09, 2017 2:36 am

by Catagory6

are there any gaskets to seal up the space between the brake housing, and the ports in the frame?
looks like a really nice way for water and dirt to make its way inside

wannbwe43
Posts: 1
Joined: Thu May 31, 2018 11:50 pm
Contact:

by wannbwe43

The pictures are not shwoing full spectrum, I don't see too much

Catagory6
Posts: 221
Joined: Thu Feb 09, 2017 2:36 am

by Catagory6

at the risk of burying my own question inside my existing thread, instead of making a new thread about a related subject, i will tack on to an existing thread.

in my research into the world of disc brakes, i have come to the conclusion to go with CENTERLOCK hubs/rotors.

i have since discovered that there are two (2) different types of locking rings dependent on the type of axle, and frame clearance.

1. internally splined lock ring - which requires a cassette tool
2. externally splined lock ring - which requires a bottom bracket tool

for convenience- and bank account's sake i would like to be able to run the same type of lock ring on both FRONT and REAR hubs.

both run 12mm thru axle. which as far as i can tell, accommodate internally splined lock rings (cassette tool).
but i am unsure if the front hub, or the rotor itself will accommodate an internally splined lock ring.
from what i've read, the front hub requires the externally splined lock ring, and the rear hub, may or may not accommodate an externally splined lock ring, depending on frame clearance.

if what i have just written makes any sense at all, can YOU make it make sense to ME?

thanks

by Weenie


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ms6073
Posts: 2553
Joined: Fri Jul 23, 2004 8:24 pm
Location: Houston, Texas

by ms6073

In my experience with 12mm thru-axle, you will need the external lockrings as nobody makes a tool capable of loosening an internally splined lock ring with a 12x142 or larger rear thru-axle centerlock hub.
Michael - The Anaerobic Threshold is neither...

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