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11-05.-2005, 08:59 PM
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#1 |
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Guest
Posts: n/a
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Brake Calipers: Tektro RX40 vs Dura-Ace ?
I am looking for a set of dual-pivot brake calipers. I came across the
overview specifications for a set of Tektro RX40 calipers and they are seemingly very similar to Dura-Ace, but a quarter of the price. Has anyone used the RX40 models? What is their quality? Are they a high-end product? Thanks! |
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11-05.-2005, 09:49 PM
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#2 |
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Guest
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Re: Brake Calipers: Tektro RX40 vs Dura-Ace ?
Mike wrote: > I am looking for a set of dual-pivot brake calipers. I came across the > overview specifications for a set of Tektro RX40 calipers and they are > seemingly very similar to Dura-Ace, but a quarter of the price. Has anyone > used the RX40 models? What is their quality? Are they a high-end product? > > Thanks! Not specifically the RX-40, but many other Tektro calipers and cantis and they are very nice quality...great value. |
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11-05.-2005, 10:29 PM
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#3 |
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Guest
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Re: Brake Calipers: Tektro RX40 vs Dura-Ace ?
I don't care for them. I have a set on my TT bike and the springs are weak
and don't return the cable with enough force for internal cable routing on the rear brake. They are well known for weak return springs. Also, they are kind of heavy and bulky and a little on the flexy side. Basically they perform like the cheap brake that they are. I'll be getting rid of them soon. Wasn't worth the money I saved. "Mike" <mwest@civil.queensu.ca> wrote in message news:d5ss2b$o7m$1@knot.queensu.ca... >I am looking for a set of dual-pivot brake calipers. I came across the >overview specifications for a set of Tektro RX40 calipers and they are >seemingly very similar to Dura-Ace, but a quarter of the price. Has anyone >used the RX40 models? What is their quality? Are they a high-end product? > > Thanks! > |
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11-05.-2005, 10:37 PM
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#4 |
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Guest
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Re: Brake Calipers: Tektro RX40 vs Dura-Ace ?
Mike wrote:
> I am looking for a set of dual-pivot brake calipers. I came across the > overview specifications for a set of Tektro RX40 calipers and they are > seemingly very similar to Dura-Ace, but a quarter of the price. Has anyone > used the RX40 models? What is their quality? Are they a high-end product? They come standard on some Cannondale bikes (Cannondale Theta it says, but it's Tektro). I've got a pair on mine. Thumbs Up. -- BMO |
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12-05.-2005, 12:01 AM
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#5 |
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Guest
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Re: Brake Calipers: Tektro RX40 vs Dura-Ace ?
"Mike" <mwest@civil.queensu.ca> wrote in message
news:d5ss2b$o7m$1@knot.queensu.ca... >I am looking for a set of dual-pivot brake calipers. I came across the >overview specifications for a set of Tektro RX40 calipers and they are >seemingly very similar to Dura-Ace, but a quarter of the price. Has anyone >used the RX40 models? What is their quality? Are they a high-end product? > > Thanks! > I have a set on my Road Bike...done a couple of 1000Km's with them, and no problems at all. Good quality. Dave Quail |
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12-05.-2005, 01:53 AM
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#6 |
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Guest
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Re: Brake Calipers: Tektro RX40 vs Dura-Ace ?
Is your problem with the calipers or the levers? What kind of levers
are you using? Weak return spring could be a bad/poor lever, you should look at that first. |
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12-05.-2005, 02:08 AM
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#7 |
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Re: Brake Calipers: Tektro RX40 vs Dura-Ace ?
"bfd" <bfd853@yahoo.com> writes:
>Is your problem with the calipers or the levers? What kind of levers >are you using? Weak return spring could be a bad/poor lever, you should >look at that first. I think this line of questioning is on the right track. If you closed your eyes, and used the same pads, it would be hard to tell the difference between a set of $5 dia compe/weinmann 500 sidepulls and a set of $50 campagnolo nuovo record brakes. normally, it's only when you open you eyes that you can tell the eye candy from the dogfood. - Don Gillies San Diego, CA |
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12-05.-2005, 02:32 AM
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#8 |
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Guest
Posts: n/a
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Re: Brake Calipers: Tektro RX40 vs Dura-Ace ?
Agree, other things to look at are brake pads and cables. What kind are
you using? I use single-pivot Campy cobalto brakes with Ergo levers, Kool-stop continental (salmon colored ones) and modern cables. My brakes work extremely well. I don't see "newer" dual pivots being "superior" other than the power brake feel, which I don't care for. Check your levers, pads and cables, makes sure they're all up to snuff before changing your calipers. |
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12-05.-2005, 05:27 AM
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#9 |
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Guest
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Re: Brake Calipers: Tektro RX40 vs Dura-Ace ?
-----BEGIN PGP SIGNED MESSAGE-----
In article <d5ss2b$o7m$1@knot.queensu.ca>, Mike <mwest@civil.queensu.ca> wrote: >I am looking for a set of dual-pivot brake calipers. I came across the >overview specifications for a set of Tektro RX40 calipers and they are >seemingly very similar to Dura-Ace, but a quarter of the price. Has anyone >used the RX40 models? What is their quality? Are they a high-end product? > _ I've gone through one set of brake pads with the ones on my bike and they work just fine. I ride on some steep hills and am a chicken descender so my brakes get a lot of work. _ The one suggestion I would make is to replace the original pads with Kool Stop Salmon pads. The black ones that come with the brakes can hold grit and chew up the rims. _ Booker C. Bense -----BEGIN PGP SIGNATURE----- Version: 2.6.2 iQCVAwUBQoJql2TWTAjn5N/lAQHIVwP+JRwSqE8IuIyOTw3sMF9F86zuyg3zBOc5 L02RO6xpwMqPc5TNZ/gsSf2aJnCr8sOtdGUEoCGZRD73IllDAdir8houLjwtk71l DGZN6+PKFwZH/KrY+dBgBb1M/Rpe7Atjq+shxoAeQWYPfl/+rB9QxvbzJiGAFvtN fxHC2s7BkVA= =GJB1 -----END PGP SIGNATURE----- |
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12-05.-2005, 06:59 AM
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#10 |
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Guest
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Re: Brake Calipers: Tektro RX40 vs Dura-Ace ?
I run the long reach dual pivot model on two bikes and DA on two other
bikes. I agree with the those who say the Tektros are just fine...after you replace the original black pads with anything else. I use Kool Stop black pads and they make the Tektros and the DA's equal for the type of non race riding I do. Sometimes aebike.com has Tektros at ungodly good prices. Don't buy them all. Save some for the other guys. |
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12-05.-2005, 10:38 AM
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#11 |
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Guest
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Re: Brake Calipers: Tektro RX40 vs Dura-Ace ?
>I don't care for them. I have a set on my TT bike and the springs are weak
>and don't return the cable with enough force for internal cable routing on >the rear brake. They are well known for weak return springs. Also, they >are kind of heavy and bulky and a little on the flexy side. Basically they >perform like the cheap brake that they are. Tektros often don't come properly adjusted from the factory, and it's a bit of a black art figuring out how to do so. It's the pivot bolts that are the problem, and either too loose or too tight and you have lever return issues. Also, get rid of the stock brake pads and put some basic KoolStops in them. Salmon or black, doesn't matter that much, but they'll make a big difference. --Mike Jacoubowsky Chain Reaction Bicycles www.ChainReaction.com Redwood City & Los Altos, CA USA |
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12-05.-2005, 10:51 AM
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#12 |
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Guest
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Re: Brake Calipers: Tektro RX40 vs Dura-Ace ?
One of the reps for shimano several years back said that the lower end
calipers back then were just as good as the dura ace stuff in terms of stopping power. Pads, proper setup and good cables and housing will make a much bigger difference than model. Andres |
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12-05.-2005, 10:17 PM
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#13 |
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Guest
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Re: Brake Calipers: Tektro RX40 vs Dura-Ace ?
andresm...@aol.com wrote: > One of the reps for shimano several years back said that the lower end > calipers back then were just as good as the dura ace stuff in terms of > stopping power. Pads, proper setup and good cables and housing will > make a much bigger difference than model. > > Andres I wonder what he did after shimano canned him............ |
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08-05.-2008, 01:52 PM
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#14 |
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Registered User
Join Date: Feb 2004
Posts: 35
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Re: Brake Calipers: Tektro RX40 vs Dura-Ace ?
I did a review of the rx40 a couple years back. compared them to DA and 105
they took the middle position. all doing with spring tension difference the da was the most responsive and the 105 the least. the rx40 weight is about the same as the ultegra. as everyone else has commented its all in the pads. the salmons wear to fast and are usually a couple bucks more but braking is more significant.. not recommended on a racing bike more for commuting. Comment on single pull vs dual pull. dp brakes are quicker responding,they also are easier to feather. (racers know what Im talking about) also they wear the pads more evenly than single pulls. In short unless you are a "Weight Weenie" the RX 40 is a great value (30 years of experience.. Cat:3)  |
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09-05.-2008, 12:55 PM
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#15 |
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Guest
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Re: Brake Calipers: Tektro RX40 vs Dura-Ace ?
notryt wrote:
> I did a review of the rx40 a couple years back. compared them to DA and > 105 > they took the middle position. all doing with spring tension difference > the da was the most responsive and the 105 the least. how do you figure that? the shimanos share the same spring and have the same length lever arms. besides, "responsive" implies reaction time, and that means momentum. i defy you to detect the momentum differential for the slight mass difference between the moving parts of the different models. > the rx40 weight is > about the same as the ultegra. as everyone else has commented its all in > the pads. the salmons wear to fast and are usually a couple bucks more > but braking is more significant.. not recommended on a racing bike more > for commuting. the pad is not the caliper, buddy. > Comment on single pull vs dual pull. dp brakes are quicker > responding, how do you figure that? their velocity ratio for activation is lower. > they also are easier to feather. (racers know what Im talking > about) well, i used to race and i haven't a clue what you're talking about. > also they wear the pads more evenly than single pulls. no they don't. the "c" arm has significant "cosine error" [to quote jobst brandt] and it wears very unevenly. > > In short unless you are a "Weight Weenie" the RX 40 is a great value > (30 years of experience.. Cat:3) dura-ace are cold forged, the ultimate in high strength and fatigue resistance. tektro are just die cast [thixo-formed], and that means their mechanical properties are inferior. |
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