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Stranded by old cables

Old 11-19-16, 01:33 PM
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Stranded by old cables

I went out for a good ride today gravel and single track, bike road great. Single track is not easy on drops BTW. On way home the old girl and 1974 cables went snap. List rear shifting. 5 miles of tough gears mostky up hill. Simple fix it so I thought us pain in arse. Unable to slide new cables into shifter...seem to thick..is this possible?
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Old 11-19-16, 01:44 PM
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Try replacing your cables more often than every 40 years?


I have a Hard time feeding a replacement cable in some brifters when they are in front of me in person.
let alone over the internet. Blind.

Got welded end replacements or did you use cut (and fraying) ended cables ?
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Old 11-19-16, 01:44 PM
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There are two different types of cables on your bicycle. Brake cables, which are 1.6mm in thickness and gear cables that are 1.1mm. If your cables are 42 years old you should change the cable housings (outside part) as well.
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Old 11-19-16, 03:02 PM
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Too late for OP, but it may help someone in the future: If you break a rear shift cable, turn the derailleur high limit screw in far enough to shift to a lower gear. It's not perfect, but you should be able to move it over 1 or 2 cogs. For a front cable, you would turn the low stop to shift to a bigger chain wheel.
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Old 11-19-16, 03:20 PM
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Originally Posted by Pompiere
Too late for OP, but it may help someone in the future: If you break a rear shift cable, turn the derailleur high limit screw in far enough to shift to a lower gear. It's not perfect, but you should be able to move it over 1 or 2 cogs. For a front cable, you would turn the low stop to shift to a bigger chain wheel.
Clever idea! Thanks
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Old 11-19-16, 03:21 PM
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I am using shift cables not brake but the original ones almost look flat not round? The down tube shifter looks complicated no place for the round end to sit....
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Old 11-19-16, 04:58 PM
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Originally Posted by thehammerdog
I am using shift cables not brake but the original ones almost look flat not round? The down tube shifter looks complicated no place for the round end to sit....
Pictures needed. All dowbtube shifters i have ever seen have a hole for the cable to run thru. Thenhead of thencabke then nestles into the shift lever.
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Old 11-20-16, 09:43 AM
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Originally Posted by mstateglfr
Pictures needed. All dowbtube shifters i have ever seen have a hole for the cable to run thru. Thenhead of thencabke then nestles into the shift lever.
I am unable to post photos....not sure why. The cable end slot on shifters are made for a circle type not today's knob type. Not sure what to do?
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Old 11-20-16, 09:54 AM
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Not sure what to do?...get cables that fit your shifters. Then you wont have the issue you are having.
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Old 11-20-16, 09:58 AM
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What kind of bike is this? I believe old French shifters use smaller cable ends.
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Old 11-20-16, 08:45 PM
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This is why we have bike shops. Go to your local one and let them help you out.
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Old 11-28-16, 11:09 PM
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Ask your bike shop to get the double end version of these cables.
Jagwire Basics Shift Inner Cables | Jagwire
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Old 11-29-16, 12:47 AM
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for future reference you can pick a gear and clamp the broken cable behind a bottle cage bolt (sheldon idea)

Above way with limit screws if the cable breaks by the mech, but in my experience they normally fray at the shifter.
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Old 11-29-16, 12:58 AM
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If you do the screwing in of the high limit screw, make it easy on yourself (and the screw slot) and push the derailleur in to the cog you want while turning the screw. (Rear derailleur. Push front derailleurs out for the low limit screw.) Japanese derailleurs often have a Phillips-like head that is not a true Phillips and is easy to mangle with American tools. This is a roadside repair, so we usually don't have our pick of tools.

Ben
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Old 11-29-16, 07:36 AM
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1. There are different kinds of ends on shift cables...Get the one that fits.

2. For roadside, this is another option to wedge your the parallellagram open for an easier gear to get you home...This is from a friends bike whose cable broke on a ride...he rode it home like this!

stick bike.jpg
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Old 11-29-16, 08:36 AM
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Originally Posted by 12strings
1. There are different kinds of ends on shift cables...Get the one that fits.

2. For roadside, this is another option to wedge your the parallellagram open for an easier gear to get you home...This is from a friends bike whose cable broke on a ride...he rode it home like this!

Attachment 544467
Good idea, no tools needed. If you need a lower gear, just substitute a fatter stick. Actually, I could see this as a 3-D printed block, with steps for different gears.
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Old 11-29-16, 10:21 AM
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Originally Posted by Pompiere
Too late for OP, but it may help someone in the future: If you break a rear shift cable, turn the derailleur high limit screw in far enough to shift to a lower gear. It's not perfect, but you should be able to move it over 1 or 2 cogs. For a front cable, you would turn the low stop to shift to a bigger chain wheel.
The hack way is to move the rear der. and put a stick in the cage somewhere to get a middle gear.
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