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Discussion Starter · #1 ·
Just got a new bike that came spec'd with the 2004 Shimano XT Hydro disc brakes. My first Disc and Hydraulic brakes. The length of the rear brake cable is just right and like to point out that the LBS mechanic, who build it up, is a very knowledgeable and experience wrench. The cable routings are setup properly.

On my 2nd month of riding the bike, the rear brake line developed a kink next to the frame's rear suspension pivots from the bike's constant suspension movement/travel. (Santa Cruz Blur - rear brake line runs thru the side of the top tube and continues to the seatstay to the rear calipers.)

The Hydro cables are stock that Shimano includes with the XT Disc brakes set. Just wondering if this constant bending/movement of the cable will wear out the brake cable's integrity in the long run, possibly causing a leak.

Should I order a new set of cables now? Anybody recommend a more durable Hydro cable that will fit the Shimano XT?
 

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just along for the ride
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Always best to route the rear hydro cable as close as possible to the rear pivot to prevent kinking/movement. Along the top tube is the worst places since its futhest from the pivot making it move/flex the most. Your builder should of taken this into account and be very careful in sizing your lines. Many frames don't take that into account and kinks can happen. The lines XT uses are lined, the outer black coating can take abuse and has a inner white liner that keeps things slippery for the mineral oil. I suggest keeping an eye on it and if the kink develops a crease then deal with it. I again suggest routing all rear cables close to the pivot to avoid these problems. Good luck!
 

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Since Nineteen Forgotten
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146 Posts
Discussion Starter · #3 ·
Thanks for the feedback. Browsing thru other SC Blurs in the SC Manufactur forum, the cable routing seems to be correct. I think the cause maybe the length of the cable and the zip tie holding it next to the rear pivot of the shock mount. The zip tie is too tight and extra length of cable is causing the cable to bend upon compression. So, wiil take it back to the LBS point out the problem. Bike is still under warranty so it shouldn't be a problem.

Brown_Teeth said:
Always best to route the rear hydro cable as close as possible to the rear pivot to prevent kinking/movement. Along the top tube is the worst places since its futhest from the pivot making it move/flex the most. Your builder should of taken this into account and be very careful in sizing your lines. Many frames don't take that into account and kinks can happen. The lines XT uses are lined, the outer black coating can take abuse and has a inner white liner that keeps things slippery for the mineral oil. I suggest keeping an eye on it and if the kink develops a crease then deal with it. I again suggest routing all rear cables close to the pivot to avoid these problems. Good luck!
 
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