New rear gear cable fitted

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Rossco8854
Posts: 90
Joined: 12 Mar 2017, 9:11pm

New rear gear cable fitted

Postby Rossco8854 » 13 Oct 2018, 8:26pm

Hi I've just fitted a gear cable to an internally routed bike.... but when I "shift" there is nothing. I've pulled the cable as tight as possible with no luck. I can't seem to find anything online and as far as I am aware the cable head is fitted properly into the shifter. Any ideas?

Brucey
Posts: 30877
Joined: 4 Jan 2012, 6:25pm

Re: New rear gear cable fitted

Postby Brucey » 13 Oct 2018, 8:43pm

if you have worked the shifter a few times between installing the cable and tensioning it, it could be that the shifter has already moved all the way one way and it won't 'pull more cable' than it has already.
To identify/deal with this condition, apply some tension to the cable (eg by hand) and at the same time shift the other way (eg as if onto a smaller cog at the front or rear). The shifter may start paying out cable. If it does, carry on working the shifter until there are no more clicks, take the slack out of the cable (by repositioning it in the pinch bolt) and then you should be back on track.

If this is not the fault, report back with more details of the shifter/setup.

cheers
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~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~

Rossco8854
Posts: 90
Joined: 12 Mar 2017, 9:11pm

Re: New rear gear cable fitted

Postby Rossco8854 » 13 Oct 2018, 8:52pm

Cheers Bruce ill go and rattle at it now and let you know

Rossco8854
Posts: 90
Joined: 12 Mar 2017, 9:11pm

Re: New rear gear cable fitted

Postby Rossco8854 » 13 Oct 2018, 8:55pm

It isn't even clicking

Rossco8854
Posts: 90
Joined: 12 Mar 2017, 9:11pm

Re: New rear gear cable fitted

Postby Rossco8854 » 13 Oct 2018, 9:47pm

The good cover was pulled forward holding the selector pin... I discovered that after ripping the f$%@&%g cable back out of the frame that I had spent 4 hours in total trying to get located!!!!! Not a happy fit mechanic right now :oops: :evil: :evil:

Rossco8854
Posts: 90
Joined: 12 Mar 2017, 9:11pm

Re: New rear gear cable fitted

Postby Rossco8854 » 13 Oct 2018, 9:56pm

The good cover was pulled forward holding the selector pin... I discovered that after ripping the f$%@&%g cable back out of the frame that I had spent 4 hours in total trying to get located!!!!! Not a happy fit mechanic right now :oops: :evil: :evil:

Eyebrox
Posts: 172
Joined: 5 Aug 2015, 8:56pm

Re: New rear gear cable fitted

Postby Eyebrox » 13 Oct 2018, 11:52pm

You should leave the old outer in position. Push through the new inner but don't cut it. Pull out the old outer and use the new inner to guide a new outer up through the frame. Remember cable ends. Then cut the cable and attach to the mech, trimming off the excess.

Rossco8854
Posts: 90
Joined: 12 Mar 2017, 9:11pm

Re: New rear gear cable fitted

Postby Rossco8854 » 14 Oct 2018, 10:26pm

Still no movement in the gears after amending my previous mistakes, any suggestions? 2014 cannondale ultegra synapse is looking like a decent gumtree advert at this rate!!

Brucey
Posts: 30877
Joined: 4 Jan 2012, 6:25pm

Re: New rear gear cable fitted

Postby Brucey » 15 Oct 2018, 12:02am

quite possibly you have done something to the shifter, like the cable isn't correctly installed in it. You can check the operation of the shifter with the inner cable not installed in the frame, just in the shifter, provided you maintain a little tension on the cable whilst you work the shifter. If it doesn't work in this test it won't work when the cable is fully installed.

cheers
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~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~

Rossco8854
Posts: 90
Joined: 12 Mar 2017, 9:11pm

Re: New rear gear cable fitted

Postby Rossco8854 » 15 Oct 2018, 7:46am

Brucey wrote:quite possibly you have done something to the shifter, like the cable isn't correctly installed in it. You can check the operation of the shifter with the inner cable not installed in the frame, just in the shifter, provided you maintain a little tension on the cable whilst you work the shifter. If it doesn't work in this test it won't work when the cable is fully installed.

cheers


Could it be possible that the cable head is bedded too far into the shifter?

Brucey
Posts: 30877
Joined: 4 Jan 2012, 6:25pm

Re: New rear gear cable fitted

Postby Brucey » 15 Oct 2018, 9:11am

it is possible to fit the gear cable badly into several varieties of current STI, so that the shifter won't work any more.

cheers
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~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~

gxaustin
Posts: 360
Joined: 23 Sep 2015, 12:07pm

Re: New rear gear cable fitted

Postby gxaustin » 15 Oct 2018, 9:22am

A couple of times when changing cables I have threaded the cable in but then found that the nipple has jumped out of its socket and is floating about in the shifter body. Have you checked that the nipple is correctly seated? I hasten to suggest that anyone is as cack handed as me but it could be worth a check.

Rossco8854
Posts: 90
Joined: 12 Mar 2017, 9:11pm

Re: New rear gear cable fitted

Postby Rossco8854 » 15 Oct 2018, 9:29am

I think I'll try a new cable and at least I'm not going in completely blind. Hope its not a shifter as you say brucey!

And cack handed is my middle name when it comes to mechanical things :lol: bricklaying hands wouldn't be the most delicate things in the world!!

Rossco8854
Posts: 90
Joined: 12 Mar 2017, 9:11pm

Re: New rear gear cable fitted

Postby Rossco8854 » 15 Oct 2018, 7:12pm

Just found the shifting issue was the broken cable head was still in the shifter. Time to start routing again

Rossco8854
Posts: 90
Joined: 12 Mar 2017, 9:11pm

Re: New rear gear cable fitted

Postby Rossco8854 » 15 Oct 2018, 8:23pm

gxaustin wrote:A couple of times when changing cables I have threaded the cable in but then found that the nipple has jumped out of its socket and is floating about in the shifter body. Have you checked that the nipple is correctly seated? I hasten to suggest that anyone is as cack handed as me but it could be worth a check.



Cack handed wouldn't be in it, with the previous cable head still in place I jammed the new head in shifter so hard at the top of the ratchet thing that I now can't get it out, I have just watched a video on how to strip the lever whilst at the same time priced new ones online for a mechanic to fit..... wish me luck!!!