Tektro R559 vs. Dia-Compe 750 centerpulls.

[lum gim fong]

Any opinions from those who have used both on the same bike?

Which do you like better?

[jeffrey kane]

I've used both on the same bike before. Both worked well enough not to be significantly distinguishable in terms of performance. Both are quite easy to set up. Personally, I don't like the looks of large caliper brakes so settled on CP's as my go to on bikes that offer the clearance.

[Tim Gavin]

The biggest drawback of the R559 is that it intrudes into the fender clearance.  

If you snug the front fender up to the bottom of the brake (to maximize tire clearance), the sidepull arm hits (and bends) the fender when open.  

Centerpull brakes don't have this problem.  I went to Paul Racers (750s were not in re-production yet) on my Riv because otherwise I'd have to go 1) without fenders or 2) fit a smaller tire.

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[lconley]

I have had both (separate and together) on a couple of bikes. The main advantage of the center-pulls was that I could run a larger tire or fender. this applied mostly on the front. On a Sam the sidepulls hit the top of the fender when open for wheel removal. When I was fenderless and running the biggest tire possible (larger than Rivendell's recommended size - 50mm) only the centerpull would clear the tire. Same for my Protopaloosa and Rosco-Bubbe V1. The Tektros came with better brake shoes as I recall - I put the Tektro shoes on the Dia-Compes. Small frames are harder to use center pulls on the rear of  - need a shorter hanger, unless you can use a Paul hanger that mounts off the seat post instead of the seat post bolt. The Tektros appeal to my inner spandex-wearing Velominati, but the Dia-Compes stop the bike just as fast if not faster. I have at least two pairs of each at the moment, and if they can fit, I mount the Tektros. Here is a picture of the Rosco Bubbe with a Dia-Compe on the front and a Tektro on the rear. I think I had NOS 610 arms substituted on the Dia-Compe front.

Laing

On Thursday, January 25, 2018 at 4:16:48 PM UTC-5, lum gim fong wrote:

[Eric Daume]

I tried both and found that neither could stop my bike when the rims were wet, even with Kool Stop salmon pads.

They worked OK in the dry, though.

Eric

On Thu, Jan 25, 2018 at 4:16 PM, lum gim fong <john1...@gmail.com> wrote:

Any opinions from those who have used both on the same bike?

Which do you like better?

--

[Craig Montgomery]

Yea. They're both very good. The DiaCompes are a bit mushier but some like that. What's it called? Modulation.Of course sidepulls are a helluva lot easier to set up but they don't look as cool. 

Craig "In with the In Crowd" in Tucson

[Mark in Beacon]

I gotta protest this rim brakes don't work in the rain thing. It sure sucks if the rims are steel, but with alloy, you just need to give a quick pre-squeeze or two to clear the water off. Perhaps in a true emergency situation you will lose a critical second or two, but I find when riding in the rain, unless it's a race (how in the world do those guys manage bikes that can't stop?!) I exercise a bit more caution than usual, for a variety of reasons, not just slightly reduced braking time.

The Weinmann and Dia Compe center pulls are probably my favorite brakes. I don't find them mushy when set up properly (pretty easy) and with good modern pads and cables. I had the Tektros for a while, they were okay.

On Thursday, January 25, 2018 at 6:39:08 PM UTC-5, Eric Daume wrote:

I tried both and found that neither could stop my bike when the rims were wet, even with Kool Stop salmon pads.

They worked OK in the dry, though.

Eric

On Thu, Jan 25, 2018 at 4:16 PM, lum gim fong <john1...@gmail.com> wrote:

Any opinions from those who have used both on the same bike?

Which do you like better?

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[lum gim fong]

So far Pauls and R559 run into trouble sporadically in the rain. Sonetimes they work like normal when wet, sometimes barely any stoppage at all.

[LBleriot]

IMHO they're both speed adjusters rather than brakes.  The CPs are a tad mushier in response, but look nicer and allow more room for fenders particularly at the fork bridge.

On Thursday, January 25, 2018 at 4:16:48 PM UTC-5, lum gim fong wrote:

[Steve Palincsar]

On 01/26/2018 10:38 AM, 'Mark in Beacon' via RBW Owners Bunch wrote:

I gotta protest this rim brakes don't work in the rain thing. It sure sucks if the rims are steel, but with alloy, you just need to give a quick pre-squeeze or two to clear the water off. Perhaps in a true emergency situation you will lose a critical second or two, but I find when riding in the rain, unless it's a race (how in the world do those guys manage bikes that can't stop?!) I exercise a bit more caution than usual, for a variety of reasons, not just slightly reduced braking time.

I agree.  On the other hand, perhaps there's something else going on with Eric's bike that we're unaware of that could be making that happen.

The Weinmann and Dia Compe center pulls are probably my favorite brakes. I don't find them mushy when set up properly (pretty easy) and with good modern pads and cables. I had the Tektros for a while, they were okay.

On Thursday, January 25, 2018 at 6:39:08 PM UTC-5, Eric Daume wrote:

I tried both and found that neither could stop my bike when the rims were wet, even with Kool Stop salmon pads.

They worked OK in the dry, though.

Eric

-- 
Steve Palincsar
Alexandria, Virginia 
USA

[Tim Gavin]

Paul centerpulls have no mush, outside of the cables/housing.   Paul CP arms are much stiffer than Dia-Compe/Weinmanns.  In my opinion, the flexiness of the R559 brake arms was somewhere between the Paul and DC centerpulls.

However, any rim brake can feel mushy if you have excessive toe-in, because the front ends of the pads hit first.

Paul CPs have the same problems of any rim brake when wet, especially compounded with oil and filth from the road.  

Personally, I have an un-Rivendellian preference for discs.  I guess I'm more dwarf (disc; they loved machines) than elf (Rivendell).  My stable is two rim brake, three disc.  All fun.

On Fri, Jan 26, 2018 at 12:49 PM, lum gim fong <john1...@gmail.com> wrote:

So far Pauls and R559 run into trouble sporadically in the rain. Sonetimes they work like normal when wet, sometimes barely any stoppage at all.

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[Philip Kim]

If you only need 65mm brake reach the centerbolt Paul Racers are great, the brazeon versions are even better.

The tekto 559s with koolstop worked great for use with flat bar brake levers, but didn't feel great with road brake levers.

Not a fan of the dia compe 750s, though they look the best.