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broken shifter cable Campagnolo
Recently the head of the front shifter cable of my 2006 Campagnolo
Veloce Ergopower just popped off. The bike is almost new and was costum built by my LBS. So the components were supplied as spare parts through the official chain. While old cables cables giving up are common to me I never had a head detaching from the cable. No visible damage on the cable itself. Has anyone had a similar failure recently which might be a sign for a faulty batch? This is not as dangerous as bad brake cables but still annoying. Now I know why I always carry spare cables on longer rides. Günther |
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#2
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broken shifter cable Campagnolo
=?ISO-8859-1?Q?G=FCnther?= Schwarz writes:
Recently the head of the front shifter cable of my 2006 Campagnolo Veloce Ergopower just popped off. The bike is almost new and was costum built by my LBS. So the components were supplied as spare parts through the official chain. It never happened to me, but the heads are usually just pieces of lead heated up and "cast" by the cable manufacturer while the shifter is sticking into a mini-crucible. Any contamination on the cable might make it easy for the lead to separate. I am told that a good motorcycle can make custom-cast cable-ends onto cables of any size and shape, e.g. they could make weinmann straddle cables, for example. When a cable pops out of a brake - for me - its usually because I screwed up and threaded the wrong pear (the smaller one, not the larger one) into the brake lever. - Don "keep moving forward" Gillies San Diego, CA |
#4
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broken shifter cable Campagnolo
On Mon, 07 May 2007 12:20:19 -0600, carlfogel wrote:
On 7 May 2007 09:43:15 -0700, (Donald Gillies) wrote: =?ISO-8859-1?Q?G=FCnther?= Schwarz writes: Recently the head of the front shifter cable of my 2006 Campagnolo Veloce Ergopower just popped off. The bike is almost new and was costum built by my LBS. So the components were supplied as spare parts through the official chain. It never happened to me, but the heads are usually just pieces of lead heated up and "cast" by the cable manufacturer while the shifter is sticking into a mini-crucible. Any contamination on the cable might make it easy for the lead to separate. I am told that a good motorcycle can make custom-cast cable-ends onto cables of any size and shape, e.g. they could make weinmann straddle cables, for example. When a cable pops out of a brake - for me - its usually because I screwed up and threaded the wrong pear (the smaller one, not the larger one) into the brake lever. - Don "keep moving forward" Gillies San Diego, CA Dear Don, On motorcycles, cable ends are soldered onto each end of the cable after the wire and housing are trimmed to roughly the right length. Motorcyclists are usually shocked to see the bare end of a bicycle brake cable just clamped with nothing but a tiny screw and plate. Slotted fittings allow cable installation and removal from the brake and clutch levers, the twist throttle, cable adjusters (often at both ends), brake and clutch arms, and the carburetor slide. Here's a how-to-trim-and-solder with pictures: http://www.off-road.com/dirtbike/jul...CableTech.html Is there any reason this couldn't be done with bicycle cable? The conservationist in me is always bothered when I buy a full-length brake cable and then clip most of it off when installing a front brake. I've often thought it would be less wasteful (and cheaper) to get a continuous length of cable and some end caps. I suppose the biggest difficulty would be finding end caps, since I've never seen them for sale. |
#5
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broken shifter cable Campagnolo
On Mon, 07 May 2007 18:45:56 -0500, Gary Young
wrote: On Mon, 07 May 2007 12:20:19 -0600, carlfogel wrote: On 7 May 2007 09:43:15 -0700, (Donald Gillies) wrote: =?ISO-8859-1?Q?G=FCnther?= Schwarz writes: Recently the head of the front shifter cable of my 2006 Campagnolo Veloce Ergopower just popped off. The bike is almost new and was costum built by my LBS. So the components were supplied as spare parts through the official chain. It never happened to me, but the heads are usually just pieces of lead heated up and "cast" by the cable manufacturer while the shifter is sticking into a mini-crucible. Any contamination on the cable might make it easy for the lead to separate. I am told that a good motorcycle can make custom-cast cable-ends onto cables of any size and shape, e.g. they could make weinmann straddle cables, for example. When a cable pops out of a brake - for me - its usually because I screwed up and threaded the wrong pear (the smaller one, not the larger one) into the brake lever. - Don "keep moving forward" Gillies San Diego, CA Dear Don, On motorcycles, cable ends are soldered onto each end of the cable after the wire and housing are trimmed to roughly the right length. Motorcyclists are usually shocked to see the bare end of a bicycle brake cable just clamped with nothing but a tiny screw and plate. Slotted fittings allow cable installation and removal from the brake and clutch levers, the twist throttle, cable adjusters (often at both ends), brake and clutch arms, and the carburetor slide. Here's a how-to-trim-and-solder with pictures: http://www.off-road.com/dirtbike/jul...CableTech.html Is there any reason this couldn't be done with bicycle cable? The conservationist in me is always bothered when I buy a full-length brake cable and then clip most of it off when installing a front brake. I've often thought it would be less wasteful (and cheaper) to get a continuous length of cable and some end caps. I suppose the biggest difficulty would be finding end caps, since I've never seen them for sale. Dear Gary, You can do it, but the fuss and trouble are probably much greater than the cost of the bicycle cable. Many attempts to avoid waste turn out to be extremely wasteful when you step back and look at the whole process. The best thing to do with old pieces of cable and housing is to throw them away so that they don't fill useless boxes on shelves and crowd out useful stuff. A good antidote to the pack-rat save-anything syndrome is reading any of Don Aslett's books on getting rid of junk: For Packrats Only Not For Packrats Only Clutter's Last Stand Clutter-Free Forever . . . and so on. You can find used and new copies at www.bookfinder.com, Aslett made his fortune in office janitorial services, where he learned the hard way just how much time most people waste cleaning around useless junk and clutter. His books are just cheerful exhortations to throw our useless stuff away, with endless, painfully familiar examples of our mindless urge to keep things that--that--well, that might be useful someday after a nuclear war. True, I might use some of those worn-out old bicycle tires for some experiment in Fogel Labs, but they're really just junk, even hanging neatly from the garage rafters. Excuse me for a moment . . . There! Eight worn-out or hopelessly damaged 700c tires now nestle in my trash can. In the process, I knocked over some useless junk piled neatly nearby. (Just as Aslett predicts, the junk got in my way and the resulting mess wasted my time.) I also discovered that I had a stash of unused 27-inch tires. (Just as Aslett predicts, my junk had covered up my useful stuff.) Like a coward, I ignored the boxes of old 27-inch brake calipers and cables. (Just as Aslett predicts.) Excuse me again for a moment . . . There! So much for all the old caliper brakes salvaged off junked bicycles. And the box full of empty cable housings went, too. (But not before I began to stare and think that I ought keep just one or two long cable housings--plus maybe one of each color-- and-- and-- No, Aslett is right. If you haven't found a use for it in years and it just clutters your shelves, it will be just as happy and useful in the trash and you'll be happier without it. So I tossed the neat box filled with worn-out old square-taper cranks, bearing rings, and threaded crank caps.) The push-reel lawn mower is sulking near the trash can, too. I last used it over thirty years ago, but it's had a cosy spot in the garage ever since, just in case disaster struck, gas became unavailable to run the power mower, and I decided in the midst of Armageddon that the grass needed mowing. I can use the space that it hogged. (A moment's thought, as Aslett suggests, showed me that there is no neighbor I dislike enough to burden with a free push-mower, much less a friend or charity. Its sheet-metal grass-catcher still bears the $10.95 price mark, but I have no more use for it than I have for a buggy whip.) Thanks for inadvertently reminding me of the dangers of "the conservationist in me" that leads to most of the clutter in our lives. The real cost of storing and trying to use old bits of cut-off wire cable (and similar junk) usually outweighs the imaginary gains. Cheers, Carl Fogel |
#6
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broken shifter cable Campagnolo
On May 6, 4:21 pm, Günther Schwarz wrote:
Recently the head of the front shifter cable of my 2006 Campagnolo Veloce Ergopower just popped off. The bike is almost new and was costum built by my LBS. So the components were supplied as spare parts through the official chain. While old cables cables giving up are common to me I never had a head detaching from the cable. No visible damage on the cable itself. Has anyone had a similar failure recently which might be a sign for a faulty batch? This is not as dangerous as bad brake cables but still annoying. Now I know why I always carry spare cables on longer rides. Günther I have seen it twice, once on a der cable and once on a brake cable. Having it happen on a brake cable can be -BAD. Having it happen on a shift cable is nothing more than inconvenient, unless you are 'somebody' climbing the Stelvio. Were they Campag cables? When they replace, ensure they use some sort of small ended der cable as the 'shimano' type, with a larger head, get stuck in the shifter hole. |
#7
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broken shifter cable Campagnolo
Donald Gillies wrote:
=?ISO-8859-1?Q?G=FCnther?= Schwarz writes: Recently the head of the front shifter cable of my 2006 Campagnolo Veloce Ergopower just popped off. The bike is almost new and was costum built by my LBS. So the components were supplied as spare parts through the official chain. It never happened to me, but the heads are usually just pieces of lead heated up and "cast" by the cable manufacturer while the shifter is sticking into a mini-crucible. AFAIK the heads are pressed onto the cables, not soldered which used to be the usual method. For the old method one just buys the heads of the correct size and shape. Any contamination on the cable might make it easy for the lead to separate. That's why quality control is essential for any manufacturer of such cables. I expect every single one to be tested with forces much larger than what I can produce with just one or two fingers on a shifter lever. But that might be wishful thinking. I am told that a good motorcycle can make custom-cast cable-ends onto cables of any size and shape, e.g. they could make weinmann straddle cables, for example. There are companies that specialize in the low volume production of any kind of cable e.g. for vintage motorcycles and cars. But the number of different heads needed for these will be limited. I don't expect them to have a mould for straddle cables. Could be done, of course, but at a prize. Günther |
#8
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broken shifter cable Campagnolo
Qui si parla Campagnolo wrote:
On May 6, 4:21 pm, Günther Schwarz wrote: Recently the head of the front shifter cable of my 2006 Campagnolo Veloce Ergopower just popped off. The bike is almost new and was costum built by my LBS. So the components were supplied as spare parts through the official chain. While old cables cables giving up are common to me I never had a head detaching from the cable. No visible damage on the cable itself. Has anyone had a similar failure recently which might be a sign for a faulty batch? This is not as dangerous as bad brake cables but still annoying. Now I know why I always carry spare cables on longer rides. I have seen it twice, once on a der cable and once on a brake cable. Having it happen on a brake cable can be -BAD. Having it happen on a shift cable is nothing more than inconvenient, unless you are 'somebody' climbing the Stelvio. Well, it was the front one. So on the Stelvio I would have just climbed to the top and fixed it there. So it was on a rather flat section of a Brevet, and as I have a double crank set, I just went on to the next control point. Nice detail about double chain rings. With a triple I would have to fix it right on place. Were they Campag cables? Yes, original cables and housings that came with the Ergopower. When they replace, ensure they use some sort of small ended der cable as the 'shimano' type, with a larger head, get stuck in the shifter hole. I'll ask my LBS for them. One good thing about buying things locally is that I can put defective parts on their desk. Much more satisfying than sending them back to mail order places. Günther |
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