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Linear pull brake levers???
I am considering upgrading my V brakes from entry level Tektro to SRAM
9.0 Linear pull brakes (or some other quality mid level V brake). I am a recreational rider, but still want a decent set of brakes under me. I'm sure I can do better than the entry level brakes that came with the bike, but don't have need for anything like racers or aggressive bike bashers might use. I want something simple, rugged and reliable. After reading brake reviews at MTB review, the SRAM 9.0 brakes look like a good fit for me. My question is brake levers. On the MTB review website it states "compatible with linear pull brake levers". My bike came equipped with Shimano ST-EF29-B combo brake lever/shifters. I don't have any negative issues with these components and would like to keep them for now. So far I am unable to determine if my existing brake levers are linear pull. I've searched the web but only find thousands of bikes that have this component installed. Nothing at the Shimano web site either. Are these brake levers linear pull? Is there a way that I can tell from looking at them if they are linear pull? Thanks, Tracy |
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#2
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Pizza Man wrote:
I am considering upgrading my V brakes from entry level Tektro to SRAM 9.0 Linear pull brakes (or some other quality mid level V brake). Are these brake levers linear pull? Is there a way that I can tell from looking at them if they are linear pull? As far as I know, V brakes ARE linear pull brakes. |
#3
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Pizza Man wrote:
My question is brake levers. On the MTB review website it states "compatible with linear pull brake levers". My bike came equipped with Shimano ST-EF29-B combo brake lever/shifters. I don't have any negative issues with these components and would like to keep them for now. So far I am unable to determine if my existing brake levers are linear pull. I've searched the web but only find thousands of bikes that have this component installed. Nothing at the Shimano web site either. Are these brake levers linear pull? Is there a way that I can tell from looking at them if they are linear pull? My son has the same brake/shifter unit on his bike. It's actually a Shimano ST-EF29-8 vice "B" (the 8 denoting # of speeds). Managed to find some info on the Shimano Europe site: http://www.shimano-europe.com/cycling/ . They also had a nice PDF exploded view of the shifter itself. Nice to have if pieces go flying when taking it apart: http://tinyurl.com/6sdef ......and yes linear pull and v-brakes are the same animal. Good info here (Park Tool site): http://tinyurl.com/6sdef Good luck Tom |
#4
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someone writes:
I am considering upgrading my V brakes from entry level Tektro to SRAM 9.0 Linear pull brakes (or some other quality mid level V brake). Are these brake levers linear pull? Is there a way that I can tell from looking at them if they are linear pull? As far as I know, V brakes ARE linear pull brakes. I guess I missed that definition. What is a linear pull brake? Jobst Brandt |
#6
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In article , wrote: someone writes: I am considering upgrading my V brakes from entry level Tektro to SRAM 9.0 Linear pull brakes (or some other quality mid level V brake). Are these brake levers linear pull? Is there a way that I can tell from looking at them if they are linear pull? As far as I know, V brakes ARE linear pull brakes. I guess I missed that definition. What is a linear pull brake? _ A V-brake. I have no idea why they are called linear pull other than that you pull the two arms together directly, rather than using a straddle cable. As near as I can tell, it is market speak only and has no technical meaning. _ Booker C. Bense -----BEGIN PGP SIGNATURE----- Version: 2.6.2 iQCVAwUBQVNVb2TWTAjn5N/lAQHnOQP/QzB9hSI3jO1t9NbZphlvlJ7c1cB+t7ZG atns+eavJL8ouq0S5wBUygfqt5fgtrSnHaNBGVM/Vic7TdqW36CVuQ2X+veK9oob cvQVNSF9AsFja6XubJr6gkZT8oc+6Iwq6w5WTeRNLEbLL5GCf5 Z4KGRN+Y2mtWF9 Rss76ODj3M0= =eEHB -----END PGP SIGNATURE----- |
#7
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Tom C Medara writes:
I am considering upgrading my V brakes from entry level Tektro to SRAM 9.0 Linear pull brakes (or some other quality mid level V brake). Are these brake levers linear pull? Is there a way that I can tell from looking at them if they are linear pull? As far as I know, V brakes ARE linear pull brakes. I guess I missed that definition. What is a linear pull brake? Hehehehehe, I guess if it's not on pavement the good Mr Jobst's knowledge of bicyles is similar to his grasp of international affairs. Google is your friend... http://bikegallery.com/site/page.cfm?PageID=179 That's fine but what is "linear" about this and how do you define it. I see no difference between that and a sidepull brake where ends of levers get pulled together. Could you explain to what "linear pull" refers? That in contrast to other brakes. Jobst Brandt |
#8
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wrote:
Tom C Medara writes: I am considering upgrading my V brakes from entry level Tektro to SRAM 9.0 Linear pull brakes (or some other quality mid level V brake). Are these brake levers linear pull? Is there a way that I can tell from looking at them if they are linear pull? As far as I know, V brakes ARE linear pull brakes. I guess I missed that definition. What is a linear pull brake? Hehehehehe, I guess if it's not on pavement the good Mr Jobst's knowledge of bicyles is similar to his grasp of international affairs. Google is your friend... http://bikegallery.com/site/page.cfm?PageID=179 That's fine but what is "linear" about this and how do you define it. I see no difference between that and a sidepull brake where ends of levers get pulled together. Could you explain to what "linear pull" refers? That in contrast to other brakes. Jobst Brandt I haven't a clue why they're called that. I presume it's due to the fact that the cable runs (sorta) directly from one brake arm to the next, as opposed to the straddle cable found on cantilevers that these brakes essentially replaced on most off road bicycles. I assume "they" decided there needed to be a name for a new style of brakes to help distunguish it from other types of rim caliper brakes. Best definition I could find was good ol' Sheldon Brown's web site (admittedly I didn't spend long): V-Brake ® A Shimano trademark for a direct-pull cantilever brake. This is a cantilever which does not use a separate transverse cable. It has two tall arms, one of which has a housing stop and the other an anchor bolt. The exposed part of the cable runs horizontally from one arm to the other. V-Brakes and other direct-pull cantilevers have more mechanical advantage than other brakes, so they require special hand levers with less-than-average mechanical advantage to keep the overall mechanical advantage in a useful range. Some V-Brakes also incorporate a parallelogram linkage which mantains the shoe at the correct angle as it approaches the rim. This feature also allows the motion of the shoe to be more nearly horizontal than conventional cantilevers. "V-Brake" is a Shimano trademark. Of course you didn't ask "Why are they called linear pull brakes?", you asked "What are linear pull brakes?" I hopefully have provided a good pictoral example of the latter, and a plausible explaination of the former. Tom |
#9
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Jobst Brandt asked:
Could you explain to what "linear pull" refers? That in contrast to other brakes. Actually, the proper distinction is "linear pull" _cantilevers_ as distinct from traditional center-pull cantilevers. Center-pull brakes, either calipers or cantilevers are distinctly non-linear in response. I cover this in some detail at: http://sheldonbrown.com/cantilever-geometry. Linear-pull cantilevers, such as Shimano's "V-Brakes" are, by comparison basically linear in terms of pad movement vs cable movement. Traditional sidepulls are also linear in response, but to refer to them as "linear pull" brakes would be sort of like calling an Ashtabula crank a "cotterless" crank: technically correct, but idiomatically inappropriate. Sheldon "http://sheldonbrown.com/glossary" Brown +-----------------------------------------+ | Man invented language to satisfy his | | deep need to complain. -- Lily Tomlin | +-----------------------------------------+ 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 |
#10
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On Thu, 23 Sep 2004 12:44:33 -0700, Pizza Man wrote:
I am considering upgrading my V brakes from entry level Tektro to SRAM 9.0 Linear pull brakes (or some other quality mid level V brake). I am a recreational rider, but still want a decent set of brakes under me. I'm sure I can do better than the entry level brakes that came with the bike, but don't have need for anything like racers or aggressive bike bashers might use. What makes you think that there is something wrong with the brakes you have? A brake, after all, is a very simple mechanism. As long as it can be adjusted so that the pads don't rub, and still can grab the front wheel tight enough to send you over the bars (not that you want to do that, but the brakes should be capable of that much force), there is no "performance" advantage to any other brake. Even entry-level brakes rarely, if ever, fail. Only the really cheapo department-store brakes should be replaced as a matter of safety. -- David L. Johnson __o | A mathematician is a machine for turning coffee into theorems. _`\(,_ | -- Paul Erdos (_)/ (_) | |
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