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#1
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small plastic washers on wires
On my racer, there is a wire under the
top tube. On this wire hangs three very small plastic washers. Unless someone forgot to remove them, the only thing I can think of is they are there to prevent the wire from rattling against the tube. Not that that would happen very often for a stiff wire, right? -- underground experts united http://user.it.uu.se/~embe8573 |
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#2
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small plastic washers on wires
On Thu, 11 Oct 2018 09:07:36 +0200, Emanuel Berg
wrote: On my racer, there is a wire under the top tube. On this wire hangs three very small plastic washers. Unless someone forgot to remove them, the only thing I can think of is they are there to prevent the wire from rattling against the tube. Not that that would happen very often for a stiff wire, right? You'd be surprised. I bought a new (second hand) bike that had the rear brake cable run from the brake lever to the rear brake in the cable housing with two tiny little metal clamps to hold it to the top tube, The first time I rode it on the road there was this funny little "ding, ding" every time I hit a rough place in the pavement. I stopped twice to check and couldn't find anything loose. Later I was doing some work on the bike and dropped the bike about a foot (onto the tires) and "ding, ding". It was the center section of the cable banging against the underside of the top tube. A third clamp at the middle of the cable stopped the noise. -- Cheers, John B. |
#3
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small plastic washers on wires
On Thursday, October 11, 2018 at 3:07:39 AM UTC-4, Emanuel Berg wrote:
On my racer, there is a wire under the top tube. On this wire hangs three very small plastic washers. Unless someone forgot to remove them, the only thing I can think of is they are there to prevent the wire from rattling against the tube. Not that that would happen very often for a stiff wire, right? In my experience, it happens very often. Leave those little donut things in place. - Frank Krygowski |
#4
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small plastic washers on wires
On 10/11/2018 12:07 AM, Emanuel Berg wrote:
On my racer, there is a wire under the top tube. On this wire hangs three very small plastic washers. Unless someone forgot to remove them, the only thing I can think of is they are there to prevent the wire from rattling against the tube. Not that that would happen very often for a stiff wire, right? I'm guessing you mean a brake /cable/ runs under your top tube. ("Cable" is the common term for brake and derailleur-control wires.) If the washers are soft and rubbery, vaguely doughnut/torus shaped, yes, these are commonly used to keep cable from rattling. If the length of exposed cable is long, it doesn't take so very much bouncing of the bike to get the cable to bounce against the frame tubes. Brake cables aren't all that stiff. Mark J. |
#5
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small plastic washers on wires
On 10/11/2018 12:21 PM, Mark J. wrote:
On 10/11/2018 12:07 AM, Emanuel Berg wrote: On my racer, there is a wire under the top tube. On this wire hangs three very small plastic washers. Unless someone forgot to remove them, the only thing I can think of is they are there to prevent the wire from rattling against the tube. Not that that would happen very often for a stiff wire, right? I'm guessing you mean a brake /cable/ runs under your top tube. ("Cable" is the common term for brake and derailleur-control wires.) If the washers are soft and rubbery, vaguely doughnut/torus shaped, yes, these are commonly used to keep cable from rattling. If the length of exposed cable is long, it doesn't take so very much bouncing of the bike to get the cable to bounce against the frame tubes. Brake cables aren't all that stiff. Mark J. You're not wrong but we have found that using 'wire' and 'casing' specifically, separate from 'brake cable system' or 'gear cable system', helps when talking with consumers. -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
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small plastic washers on wires
Mark J. wrote:
I'm guessing you mean a brake /cable/ runs under your top tube. ("Cable" is the common term for brake and derailleur-control wires.) If the washers are soft and rubbery, vaguely doughnut/torus shaped, yes, these are commonly used to keep cable from rattling. If the length of exposed cable is long, it doesn't take so very much bouncing of the bike to get the cable to bounce against the frame tubes. Brake cables aren't all that stiff. Great, thanks! -- underground experts united http://user.it.uu.se/~embe8573 |
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small plastic washers on wires
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#8
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small plastic washers on wires
On 12/10/18 12:14, Tim McNamara wrote:
To round out the discussion: https://en.wikipedia.org/wiki/Bowden_cable And there is a section to answer Emanuel's question. https://en.wikipedia.org/wiki/Bowden_cable#Donuts -- JS |
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