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"Dangerous" Cantilers?
Hit the CR key by mistake ... and now DSL quit ... delay in posting
..... One of our esteemed experts previously suggested that a cantilever equipped bike without bbl adjusters is dangerous. "If there are no adjusting barrels provided, the bike is dangerous and defective. Nobody should accept such incompetence." I'm baffled by this. Inconvenient, maybe, but dangerous? Defective? Comments appreciated. Robin Hubert |
"Dangerous" Cantilers?
Robin Hubert wrote: Hit the CR key by mistake ... and now DSL quit ... delay in posting .... One of our esteemed experts previously suggested that a cantilever equipped bike without bbl adjusters is dangerous. "If there are no adjusting barrels provided, the bike is dangerous and defective. Nobody should accept such incompetence." I'm baffled by this. Inconvenient, maybe, but dangerous? Defective? Comments appreciated. Inconvenient, maybe. "Dangerous" seems silly. I think the concept of "safety" has the same place in our society that the concept of "miracles" had in the dark ages. Back then, if you described direct miraculous intervention by the Lord, all debate ceased, no matter how implausible the tale. Anyone questioning was obviously a heathen to be mocked and shunned. These days, if anyone accepts something that isn't as "safe" as possible, they are a heathen to be mocked and shunned. Seems the age of reason came, then left again. - Frank Krygowski |
"Dangerous" Cantilers?
Robin Hubert wrote:
One of our esteemed experts previously suggested that a cantilever equipped bike without bbl adjusters is dangerous. "If there are no adjusting barrels provided, the bike is dangerous and defective. Nobody should accept such incompetence." I'm baffled by this. Inconvenient, maybe, but dangerous? Defective? Drop bar levers tend to have slightly more mechanical advantage than typical upright-style levers, and those are the ones that lack built-in barrel adjusters. Cantilever brakes can work very well with these, but the adjustment becomes more critical. Any rim brake should have some provision for taking up the cable slack as the brake shoes wear, with no tools required. If such adjusters are omitted, there's a much greater chance of the bike being riddden with incorrectly adjusted brakes as the pads wear. This is dangerous, expecially in wet conditions. Even if the rider does take the trouble to re-adjust the cable at the anchor bolt, when new shoes are installed the cable will then need to be loosened again the same way, and now there will be a crimped, formerly clamped section of cable as part of the working cable. This is much more likely to break than a section of cable that has not been subject to repeated clamping and re-clamping to accomplish the fine adjustment that _should_ have been done with the barrel adjuster. Sheldon "Perhaps I Should Have Said 'Mono-Buttocked'" Brown +--------------------------------------------+ | Most people would sooner die than think; | | in fact, they do so." - Bertrand Russell | +--------------------------------------------+ Harris Cyclery, West Newton, Massachusetts Phone 617-244-9772 FAX 617-244-1041 http://harriscyclery.com Hard-to-find parts shipped Worldwide http://captainbike.com http://sheldonbrown.com |
"Dangerous" Cantilers?
On Wed, 27 Jul 2005 19:48:25 -0400, Sheldon Brown
wrote: Robin Hubert wrote: One of our esteemed experts previously suggested that a cantilever equipped bike without bbl adjusters is dangerous. "If there are no adjusting barrels provided, the bike is dangerous and defective. Nobody should accept such incompetence." I'm baffled by this. Inconvenient, maybe, but dangerous? Defective? Drop bar levers tend to have slightly more mechanical advantage than typical upright-style levers, and those are the ones that lack built-in barrel adjusters. Cantilever brakes can work very well with these, but the adjustment becomes more critical. Any rim brake should have some provision for taking up the cable slack as the brake shoes wear, with no tools required. If such adjusters are omitted, there's a much greater chance of the bike being riddden with incorrectly adjusted brakes as the pads wear. This is dangerous, expecially in wet conditions. Even if the rider does take the trouble to re-adjust the cable at the anchor bolt, when new shoes are installed the cable will then need to be loosened again the same way, and now there will be a crimped, formerly clamped section of cable as part of the working cable. This is much more likely to break than a section of cable that has not been subject to repeated clamping and re-clamping to accomplish the fine adjustment that _should_ have been done with the barrel adjuster. I had a bike and the easiest adjustment for the front brake was adjusting the stem up and down. A bit more awkward than a barrel on the lever, but it worked. Sheldon "Perhaps I Should Have Said 'Mono-Buttocked'" Brown Yep, that it was. Ron +--------------------------------------------+ | Most people would sooner die than think; | | in fact, they do so." - Bertrand Russell | +--------------------------------------------+ Harris Cyclery, West Newton, Massachusetts Phone 617-244-9772 FAX 617-244-1041 http://harriscyclery.com Hard-to-find parts shipped Worldwide http://captainbike.com http://sheldonbrown.com |
"Dangerous" Cantilers?
On 27 Jul 2005 15:15:55 -0700, "Robin Hubert"
wrote: Hit the CR key by mistake ... and now DSL quit ... delay in posting .... One of our esteemed experts previously suggested that a cantilever equipped bike without bbl adjusters is dangerous. "If there are no adjusting barrels provided, the bike is dangerous and defective. Nobody should accept such incompetence." I'm baffled by this. Inconvenient, maybe, but dangerous? Defective? Bloody hard to make a canti setup without adjusters at the levers unless you cross-breed it with a roadie, innit? I can't see that working well anyway. I think the cited assertion is an overreaction to a problem that's hard to create to begin with. *If* a set of canti brake levers could be found which lacked adjusting barrels, the system could still be adjusted (inconveniently) using the cable clamp. I would score this as a troll in its venue. -- Typoes are a feature, not a bug. Some gardening required to reply via email. Words processed in a facility that contains nuts. |
"Dangerous" Cantilers?
On Wed, 27 Jul 2005 19:48:25 -0400, Sheldon Brown
wrote: Sheldon "Perhaps I Should Have Said 'Mono-Buttocked'" Brown Or would it have been better expressed as "velocity drawn"? Naah, too obscure for anybody but Fogel. -- Typoes are a feature, not a bug. Some gardening required to reply via email. Words processed in a facility that contains nuts. |
"Dangerous" Cantilers?
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"Dangerous" Cantilers?
Quoting Werehatrack :
On 27 Jul 2005 15:15:55 -0700, "Robin Hubert" One of our esteemed experts previously suggested that a cantilever equipped bike without bbl adjusters is dangerous. Bloody hard to make a canti setup without adjusters at the levers unless you cross-breed it with a roadie, innit? You mean like a very large proportion of touring bikes? Not so very hard after all. -- David Damerell flcl? Today is Second Oneiros, July. |
"Dangerous" Cantilers?
On 28 Jul 2005 13:49:35 +0100 (BST), David Damerell
wrote: Quoting Werehatrack : On 27 Jul 2005 15:15:55 -0700, "Robin Hubert" One of our esteemed experts previously suggested that a cantilever equipped bike without bbl adjusters is dangerous. Bloody hard to make a canti setup without adjusters at the levers unless you cross-breed it with a roadie, innit? You mean like a very large proportion of touring bikes? Not so very hard after all. Touring bikes with drop bars are generally referred to as "randonneurs" over here, though, and the proportion isn't so large. Jasper |
"Dangerous" Cantilers?
Werehatrack wrote:
Bloody hard to make a canti setup without adjusters at the levers unless you cross-breed it with a roadie, innit? I can't see that working well anyway. I think the cited assertion is an overreaction to a problem that's hard to create to begin with. *If* a set of canti brake levers could be found which lacked adjusting barrels There's no such thing as "canti brake levers" except in the imagination of marketeers. The issue involves using drop bar brake levers with chantilevers, as is done on virtually all touring bikes. No current-production drop-bar brake lever incorporates a barrel adjuster, but back when center-pull calipers were the hot thing, virtually all "bike boom" tenspeeds had adjusters built into the housing stops on the headset and seat cluster, even the cheapest models. Thast is how it should be for modern bikes with drop bars and cantilevers as well. Alternatively, there are a variety of "in line" cable adjusters readily available. Theres no excuse for trying to foist a bike off on a customer that lacks some reasonable fine adjustment to deal with normal brake pad wear. No self-respecting mechanic would pass a bike with such a poor setup. Sheldon "A Step Backwards" Brown +-----------------------------------------------------------------+ | "The major difference between a thing that might go wrong and a | | thing that cannot possibly go wrong is that when a thing that | | cannot possibly go wrong goes wrong it usually turns out to be | | impossible to get at or repair." - Douglas Adams, RIP - HHGTTG | +-----------------------------------------------------------------+ Harris Cyclery, West Newton, Massachusetts Phone 617-244-9772 FAX 617-244-1041 http://harriscyclery.com Hard-to-find parts shipped Worldwide http://captainbike.com http://sheldonbrown.com |
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