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From: AMuzi <am@yellowjersey.org>
Newsgroups: rec.bicycles.tech
Subject: Re: an irritatingly common occurrence
Date: Mon, 24 Mar 2025 11:36:24 -0500
Organization: Yellow Jersey, Ltd.
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On 3/24/2025 10:55 AM, Zen Cycle wrote:
> On 3/24/2025 11:29 AM, AMuzi wrote:
>> On 3/24/2025 10:11 AM, Zen Cycle wrote:
>>> On 3/23/2025 10:50 AM, AMuzi wrote:
>>>> On 3/22/2025 10:17 PM, zen cycle wrote:
>>>>>>> On 3/21/2025 5:36 PM, AMuzi wrote:
>>>>>>>> On 3/21/2025 4:11 PM, Zen Cycle wrote:
>>>>>>>>> Lennard Zinn describes the causes and repair 
>>>>>>>>> process for removing
>>>>>>>>> broken cables from  11sp Ultegra ST-R8000 and 6800, 
>>>>>>>>> and various Dura-
>>>>>>>>> Ace levers.
>>>>>>>>>
>>>>>>>>> https://lennardzinn.substack.com/p/getting-a- 
>>>>>>>>> broken- shift- cable-out
>>>>>>>>>
>>>>>>>>> According to Lennard it's "an irritatingly common 
>>>>>>>>> occurrence".
>>>>>>>>>
>>>>>>>>> Maybe if they used special Campagnolo non-stretch 
>>>>>>>>> shifter cables it
>>>>>>>>> wouldn't be a problem?
>>>>>>>>
>>>>>>>> Mr Zinn's right on that point.
>>>>>>>>
>>>>>>>> Campagnolo Ergo wires stick one's palm as they start 
>>>>>>>> to fray, well
>>>>>>>> before failure. It's a very noticeable warning.
>>>>>
>>>>> Which version/models/years are you referring to? I rode 
>>>>> Campagnolo Chorus 9Sp for many years, never had that 
>>>>> experience.
>>>>
>>>> The wire path is on the outside and the capstan spools 
>>>> under the lever, so fraying starts at the outside bottom 
>>>> of your palm and although not painful it's noticeable.
>>>>
>>>
>>> Is that on the older 9sp stuff as well?
>>>
>>
>> Yes, all 8, 9, 10 Ergos from 1992; same wire path.
>>
>> The 11, 12, 13 speed (non rebuildable) Ergos have the same 
>> general layout but the wire path is under a cover so now a 
>> fraying wire won't stab the operator.  A broken head still 
>> falls straight down, out of the shifter, rather than 
>> mangling the mechanism as with The Other brand.
>>
> 
> That's interesting, I had Chorus 9sp on my commuter and race 
> rig for probably ten years. After I converted my race rig to 
> 10sp I put the chorus setup on my cx bike (still there) and 
> raced it for a number of years. I've never had an issue with 
> fraying cables. Just luck I guess?
> 

Here's a frayed Campagnolo wire I replaced yesterday.
I pulled that wire out of recycling and stuck it in a Chorus 
Ten lever.

https://www.yellowjersey.org/photosfromthepast/ergowire.jpg

-- 
Andrew Muzi
am@yellowjersey.org
Open every day since 1 April, 1971