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Main
Date: 14 Oct 2007 17:01:34
From: Dale
Subject: Lost the click
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Out riding the other day, I had the thumb shifter on my Centaur brifter suddenly
fail to make that solid "click" when I attempted to shift the rear cogs. It
still does shift, but it feels "mushy". It's easy to mistakenly shift two cogs
higher or even end up half way between gears. With a light touch, I can still
feel the ratchet in the shifter engaging, but just barely.
The bike is only a little over 2-1/2 years old. Work takes me on the road a lot
and while I don't track my mileage, there can't be much over 3000 miles on it.
It still has the original tires.
Any suggestions? Thanks in advance.
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Date: 15 Oct 2007 22:26:32
From: Dale
Subject: Re: Lost the click
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That's unfortunate. I would have hoped that a Campy brifter would last
longer than a set of tires. Until it's fixed I guess I'll drag out my old
Japanese 10-speed with the Suntour derailleurs and barcons. It
hasn't failed in 30+ years.
Maybe I'll have to stop riding here:
http://www.bikely.com/maps/bike-path/Sadistic-77
I must be shifting too much on the hills.
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Date: 14 Oct 2007 23:35:33
From: rudeboy
Subject: Re: Lost the click
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I'm always a fan of keeping cables lubed, but if the change you're
describing was sudden, then most likely the spring carrier (or shift
collar as jim beam calls it) has fractured. G springs typically wear
out in 4000 -8000 miles depending on how your "shifty" you are.
Because the springs and carrier are not expensive you might plan on
replacing all (2 springs and 1 carrier per lever).
Good Luck
David
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Date: 14 Oct 2007 12:20:18
From: A Muzi
Subject: Re: Lost the click
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Dale wrote:
> Out riding the other day, I had the thumb shifter on my Centaur brifter suddenly
> fail to make that solid "click" when I attempted to shift the rear cogs. It
> still does shift, but it feels "mushy". It's easy to mistakenly shift two cogs
> higher or even end up half way between gears. With a light touch, I can still
> feel the ratchet in the shifter engaging, but just barely.
> The bike is only a little over 2-1/2 years old. Work takes me on the road a lot
> and while I don't track my mileage, there can't be much over 3000 miles on it.
> It still has the original tires.
> Any suggestions? Thanks in advance.
Rebuild with new springs; one has broken. Either DIY:
http://www.yellowjersey.org/ergo1.html
or see any competent LBS, of which there are at least 2; here and Vecchio's
--
Andrew Muzi
www.yellowjersey.org
Open every day since 1 April, 1971
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Date: 14 Oct 2007 14:28:27
From: jim beam
Subject: Re: Lost the click
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A Muzi wrote:
> Dale wrote:
>> Out riding the other day, I had the thumb shifter on my Centaur
>> brifter suddenly
>> fail to make that solid "click" when I attempted to shift the rear
>> cogs. It
>> still does shift, but it feels "mushy". It's easy to mistakenly shift
>> two cogs
>> higher or even end up half way between gears. With a light touch, I
>> can still
>> feel the ratchet in the shifter engaging, but just barely.
>> The bike is only a little over 2-1/2 years old. Work takes me on the
>> road a lot
>> and while I don't track my mileage, there can't be much over 3000
>> miles on it.
>> It still has the original tires.
>> Any suggestions? Thanks in advance.
>
> Rebuild with new springs; one has broken.
or the shift collar is broken.
http://home.comcast.net/~carlfogel/download/fatigued_campy_shift_mech.jpeg
> Either DIY:
> http://www.yellowjersey.org/ergo1.html
>
> or see any competent LBS, of which there are at least 2; here and Vecchio's
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Date: 14 Oct 2007 17:16:48
From: datakoll
Subject: Re: Lost the click
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remove cables, clean and lube housing and cables with Finish Line
Teflon/wax. fill housing with CHO, let stand, flush out. gently use a
spoke slide in and out with CHO. drain, flush.
see if the shifter unit is flushable then lube. coat the cable with FL
let dry, fill housing with FL, rewet and insert cable.
buy new shifter
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