Rear Brake cable sticking Argon 18 E112

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CharlieIreland
Posts: 6
Joined: Wed Dec 19, 2012 15:23 pm

Rear Brake cable sticking Argon 18 E112

Postby CharlieIreland » Wed Dec 19, 2012 23:52 pm

Hi there,
I am hoping someone can help me with an issue I am having. Building my first bike....
Frame: Argon 18 E112 (M)
Groupset: Sram Red (Black)
Cableset: Gore Ride On Professional
Aero Bars: Vision Trimax carbon with Vision Aero levers

I cut my cable housing for the rear brake cable and fitted same with the cable. The brake cable is slowly coming back to the resting position when I release it after activating. It is not moving quickly and smoothly back to the resting system.

I assume the cable housing length is either too long or too short.

Does anyone know if that is the issue?

If it is the issue...What is the perfect length of housing for this setup?

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ALIHISGREAT
Posts: 3918
Joined: Tue Aug 02, 2011 15:43 pm

Re: Rear Brake cable sticking Argon 18 E112

Postby ALIHISGREAT » Thu Dec 20, 2012 00:48 am

http://sheldonbrown.com/cables.html

Some pictures 1/2 way down the page might help you out.

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Monty Dog
Posts: 20389
Joined: Thu Dec 14, 2006 14:31 pm

Re: Rear Brake cable sticking Argon 18 E112

Postby Monty Dog » Thu Dec 20, 2012 07:53 am

Definitely sounds like cable drag - also check that you haven't wrapped the handlebar tape too tight. There is no magic formula, just make sure bends are progressive. When you cut the outer cable, make sure that are cut square and use a pointy-tool to open-out the liner and make sure the metal reinforcement doesn't go near the inner. TT bikes are often the worst due to short headtubes and stems - running the cables around the far side of the headtube and crossing under the topetube is better IME. I'd unwrap the bar tape, re-run the cables and make sure it's all working sweetly before wrapping the tape etc. Finally, for really convoluted runs, Nokon cables are the best as they can handle tight bends better.
Make mine an Italian, with Campagnolo on the side..

CharlieIreland
Posts: 6
Joined: Wed Dec 19, 2012 15:23 pm

Re: Rear Brake cable sticking Argon 18 E112

Postby CharlieIreland » Thu Dec 20, 2012 10:05 am

Thanks Guys. I will continue to tinker. Bulding my own bike has been something I have always wanted to do.
I have taken my time and competed each task with extreme care so far.

Want to ensure I get the final stage right regarding the cabling.

Will let you know how I get on. :wink:

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LangerDan
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Joined: Fri Jun 24, 2005 13:52 pm

Re: Rear Brake cable sticking Argon 18 E112

Postby LangerDan » Thu Dec 20, 2012 16:30 pm

Charlie

It might be worth disconnecting the cable and squeezing the caliper by hand to see how quickly it returns to centre on its own. I saw a similar issue recently which was down to an overly tight second pivot bolt - the cable route itself was fine.
'This week I 'ave been mostly been climbing like Basso - Shirley Basso.'

CharlieIreland
Posts: 6
Joined: Wed Dec 19, 2012 15:23 pm

Re: Rear Brake cable sticking Argon 18 E112

Postby CharlieIreland » Thu Dec 20, 2012 21:20 pm

Thanks. The spring on the caliper is working perfectly so this is not the issue.

I may have to engage my LBS to route the cable effectively or do you think I should persevere?

Might ask them if I could watch them fit it so I can learn from them:)

I was going to give the derailleur cables a go as SRAM Tech advised the optimum cable length from rear derailleur to stop is 36cm for the housing so that is very specific.

What do you think?

CharlieIreland
Posts: 6
Joined: Wed Dec 19, 2012 15:23 pm

Re: Rear Brake cable sticking Argon 18 E112

Postby CharlieIreland » Sat Dec 22, 2012 11:59 am

Hi Guys,
Just a quick update. I measured the cable again and ensured smooth and easy curves. Also aligned the front brake to the left lever and the back brake to the right lever. Working so much better:). On to the derailleurs now and I am done.

Thanks for the help

C


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