front derailleur catching the cable on Planet-X with Ultegra 6800
06-11-14, 04:37 AM
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front derailleur catching the cable on Planet-X with Ultegra 6800
Hi everyone, I'm hoping you can help me resolve an issue with my new bike.
it's a planet x pro carbon with shimano ultegra 6800.
The issue is the front derailleur cable is catching the mech when I shift to the small ring (it's a compact)
I can't see any way to avoid this, unfortunatly it is causing me issues as it is adjusting the cable tension only in one position.
Planet-X claim that this this is fine for the cable to touch the mech but it's not something I've ever seen before.
If anyone can provide advice it would be much appreciated.
it's a planet x pro carbon with shimano ultegra 6800.
The issue is the front derailleur cable is catching the mech when I shift to the small ring (it's a compact)
I can't see any way to avoid this, unfortunatly it is causing me issues as it is adjusting the cable tension only in one position.
Planet-X claim that this this is fine for the cable to touch the mech but it's not something I've ever seen before.
If anyone can provide advice it would be much appreciated.
06-11-14, 05:12 AM
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WE see this frequently and don't have problems with the slight cable touch. It doesn't give us cable tensioning issues. Andy.
06-11-14, 12:03 PM
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The problem is that it uses up some available cable travel by taking up slack in the inboard position. This may or may not be an issue, and the acid test is whether the FD can trim correctly in both positions.
If it passes the test, consider this an idiosyncrasy and ignore it. OTOH if you find that the RD won't move fully inboard unless you slacken the cable to where it doesn't upshift and trim correctly it's something to deal with.
The cure will take some hands on examination and maybe some creativity. The easiest solution might be to try a different FD. Otherwise, it might be possible to file an angle where it snags so the FD pushes it out of the way and slides past. Or you might fashion a metal "ski tip" and bond it in place to do the same job.
If it passes the test, consider this an idiosyncrasy and ignore it. OTOH if you find that the RD won't move fully inboard unless you slacken the cable to where it doesn't upshift and trim correctly it's something to deal with.
The cure will take some hands on examination and maybe some creativity. The easiest solution might be to try a different FD. Otherwise, it might be possible to file an angle where it snags so the FD pushes it out of the way and slides past. Or you might fashion a metal "ski tip" and bond it in place to do the same job.
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06-11-14, 02:24 PM
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We set the cable/SIS adjustment while the cable is in the routing it wants to settle into. So if the cable wants to touch the der, as the OP's does, that is how we have the cable during out tension adjusting. This seems to work for us and our customers well enough to not pay any other attention to it. Andy.
06-12-14, 03:47 AM
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Thank you all for the responses.
My main concern was that I hadn't ever seen a cable touching the mech before and was concerned that it would lead to the cable being damaged. Now you have confirmed that this shouldn't be an issue I will try and adjust it the best I can to avoid any chain rub.
If not.... look forward to some more pictures of a more "creative" solution.
Thanks again for taking the time to reply
My main concern was that I hadn't ever seen a cable touching the mech before and was concerned that it would lead to the cable being damaged. Now you have confirmed that this shouldn't be an issue I will try and adjust it the best I can to avoid any chain rub.
If not.... look forward to some more pictures of a more "creative" solution.
Thanks again for taking the time to reply
06-12-14, 01:22 PM
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two possible options i can think of
are
use a washer or spacer between the derailleur arm
and the cable
to push the cable out by a mm or two
or
add some type of cable guide to push the cable out
just above where it exits the frame
are
use a washer or spacer between the derailleur arm
and the cable
to push the cable out by a mm or two
or
add some type of cable guide to push the cable out
just above where it exits the frame
06-12-14, 01:57 PM
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RULE No.1 of bicycle repair.
DON' FIX WHAT AIN'T BROKE
If the FD works fine, and there's enough travel to shift and trim well on both the inner and outer rings, that there's no problem, and the OP can and should leave bad enough alone.
OTOH, if the arrangement is affecting functionality, then he can tinker with fixes based on the various suggestions offered.
DON' FIX WHAT AIN'T BROKE
If the FD works fine, and there's enough travel to shift and trim well on both the inner and outer rings, that there's no problem, and the OP can and should leave bad enough alone.
OTOH, if the arrangement is affecting functionality, then he can tinker with fixes based on the various suggestions offered.
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Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
