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  1. #1
    Holy crip he's a crapple
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    Best long reach brake calipers

    Converted my bike to all dura-ace 7700 group, but I'm stuck on the brakes. The 7700 calipers that came with the group I bought do not have enough reach.

    If I'm measuring this right, I need ~70-75mm of reach (from center of brake bridge hole to brake surface on the rim).

    What are the best brake calipers I can get that will fit, the tektro r559's?
    I also want to be able to run larger tires, these are temporary 700x23 or 25's that came with the wheelset I bought, I plan to run 700x32's.



    I found these dia-comp's in a bin at the local bike recyclery so I grabbed a pair for $10 just in case I couldn't find anything else long enough, but the brake power from these is -horrible-! I commute on this bike and sometimes have to stop fast to avoid cars, these I can pull the levers to the bars and not lock the tires up...
    2012 Trek Madone 5.2 64cm - 1984 68cm KHS 9spd/sti swapped to DA 7700
    2013 Trek Rumblefish Elite 23" - 2004 Santa Cruz Bullitt 21.5"

  2. #2
    c23
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  3. #3
    Holy crip he's a crapple
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    Quote Originally Posted by c23 View Post
    Lol, no thanks too ghetto for me.
    2012 Trek Madone 5.2 64cm - 1984 68cm KHS 9spd/sti swapped to DA 7700
    2013 Trek Rumblefish Elite 23" - 2004 Santa Cruz Bullitt 21.5"

  4. #4
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    If you don't mind modern brakes, tektro has some decent dual pivots. My wife has them on her commuter (fenders and 700x35 tires) and they seem to work pretty darn well. There is flex, but not as much as I would have thought.

  5. #5
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    I just saw your 559 reference, I think this is what my wife has and there is gobs of room for 35s and fenders.

  6. #6
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    How about Dia-Compe Mod 750 centerpull brakes? Should have the reach and they work.

  7. #7
    Retro Grouch onespeedbiker's Avatar
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    I would say you named the best brake for the job;Tektro r559. Even with those you will like not be satisfied; the long arms lose you a lot of leverage.

  8. #8
    Holy crip he's a crapple
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    Quote Originally Posted by Daveag View Post
    How about Dia-Compe Mod 750 centerpull brakes? Should have the reach and they work.
    Looking at the specs on those they should have enough reach, would they have more or less brake power than the Tektro r559? To convert to center pull I just would need a cable hanger with housing stop, right?
    2012 Trek Madone 5.2 64cm - 1984 68cm KHS 9spd/sti swapped to DA 7700
    2013 Trek Rumblefish Elite 23" - 2004 Santa Cruz Bullitt 21.5"

  9. #9
    Retro Grouch onespeedbiker's Avatar
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    This may work for you. Not sure exactly how it works, but if you can clamp the brake lower it just could work. http://www.tracksupermarket.com/inde...jv69migj6neoc7

    Here's a photo of how it works on the front P1000630..jpg
    Last edited by onespeedbiker; 06-16-12 at 09:56 PM.

  10. #10
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    I still think the tektro 559 is the best option. It won't be as good as a set of 7700 calipers but they slow me down better than some other short reach calipers I've tried. A set of koolstop pads would probably make them even better too.

  11. #11
    Holy crip he's a crapple
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    Quote Originally Posted by thirdgenbird View Post
    I still think the tektro 559 is the best option. It won't be as good as a set of 7700 calipers but they slow me down better than some other short reach calipers I've tried. A set of koolstop pads would probably make them even better too.

    I'm 95% ready to order 559's right now, I'm just trying to make sure I order the nutted version for my old school frame.

    I know the ones here:
    http://harriscyclery.net/product/tek...r-set-3153.htm

    Are definitely nutted, but at the same time I need to order a 28.6 to 31.8 FD shim and would like to save on shipping, the one from HC is $11 and special order/out of stock.

    Niagara has the shim I need for $3.85 in stock, and also sells the r559's.

    http://www.niagaracycle.com/product_...ucts_id=728004
    I think these are the ones I want, because these cheaper ones say recessed nut.
    http://www.niagaracycle.com/product_...ucts_id=440666

    Most reviews of the r559's I'm finding seem to be very positive, I can't imagine going from my super long reach (70-95?mm) single pivot dia-comp's to these newer tech dual pivot's wouldn't be a huge leap in brake power...having a quick release to pop the wheel off will be amazing too, I get lots of flats on my commute (%^@%$^ goathead thorns!) and having to loosen then re-adjust the brake cable is very annoying, so I usually fix my flat then finish my ride with only 1 functional brake and adjust it again once I get to the office/home...
    2012 Trek Madone 5.2 64cm - 1984 68cm KHS 9spd/sti swapped to DA 7700
    2013 Trek Rumblefish Elite 23" - 2004 Santa Cruz Bullitt 21.5"

  12. #12
    Senior Member
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    Tektro 800a?

    http://www.modernbike.com/itemgroup....175524&TID=367

    Cheap double pivot calipers.

    17.99 for the pair.

  13. #13
    bike whisperer Kimmo's Avatar
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    Quote Originally Posted by Blind View Post
    Lol, no thanks too ghetto for me.
    Man, all that frikken daylight looks pretty ghetto to me.

    How keen are you on this frame?

  14. #14
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    Quote Originally Posted by bobotech View Post
    Tektro 800a?

    http://www.modernbike.com/itemgroup....175524&TID=367

    Cheap double pivot calipers.

    17.99 for the pair.
    The cost increase of the 559 is worth it on a DA 7700 equipped bike.

    Quote Originally Posted by Kimmo View Post
    Man, all that frikken daylight looks pretty ghetto to me.

    How keen are you on this frame?
    If he uses 700x35 tires and/or fenders it will look fine.

  15. #15
    Godbotherer dwellman's Avatar
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    So. . . brazing on a couple canti bosses is out of the question?

    "Do you not know that in a race all the runners run, but only one gets the prize? Run in such a way as to get the prize"
    "So I do not run like someone who doesn't run toward the finish line. I do not fight like a boxer who hits nothing but air."
    "And let us run with endurance the race God has set before us."
    "I have fought the good fight, I have finished the race, I have kept the faith."

  16. #16
    Can'tre Member 3alarmer's Avatar
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    Quote Originally Posted by onespeedbiker View Post
    I would say you named the best brake for the job;Tektro r559. Even with those you will like not be satisfied; the long arms lose you a lot of leverage.
    +1 on Tektro....can't beat them for the price. +1 on the longer your arms, the less happy you will be.

    Before you do this, spend less money and find yourself some Kool Stop pads for the brakes you have.
    I have a similar setup on my Raleigh Sports commuter. With those pads, I stop fine.
    Last edited by 3alarmer; 06-17-12 at 08:26 AM.
    Quote Originally Posted by Al Dvorin
    Ladies and gentlemen, Elvis has left the building. Thank you and goodnight

  17. #17
    Senior Member mudboy's Avatar
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    I'm running Tektro 559's. They're nice calipers.
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  18. #18
    coprolite fietsbob's Avatar
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    Because they are massive, U brakes don't flex much when the reach is bigger...

    of the centerpull brakes.. Paul's Racer is the tops, these days.. Made in USA..

  19. #19
    Holy crip he's a crapple
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    Quote Originally Posted by Kimmo View Post
    Man, all that frikken daylight looks pretty ghetto to me.

    How keen are you on this frame?
    It's the only 68cm frame I've been able to find that didn't look stupid, I'm 6'5" and it's a 100% perfect fit for me. This is my bike and it isn't going anywhere

    2012 Trek Madone 5.2 64cm - 1984 68cm KHS 9spd/sti swapped to DA 7700
    2013 Trek Rumblefish Elite 23" - 2004 Santa Cruz Bullitt 21.5"

  20. #20
    coprolite fietsbob's Avatar
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    C&V, Older kit, Universal, classic, sidepull-brake
    was often longer reach in the back..

    You can get away with it with an L shaped shoe backup stop-plate
    that hits the chainstay, under braking force, to limit the arm flexing.
    common original part back then..

    there are center pull road brakes too, Weinnman a common supplier
    that may have been what was on that frame originally
    before it was stripped

    it is what was done back then .. note the shorter reach on the fork.
    Last edited by fietsbob; 06-18-12 at 09:40 AM.

  21. #21
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    I vote you add a set of VO fenders and a proper alloy seatpost.

  22. #22
    Holy crip he's a crapple
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    don't think I need fenders, I commute in socal, lol.

    I do want a nicer seatpost, unfortunately the DA kit I bought came with a 27.2 post and my bike uses a 26.4, so I stuck the DA post on my ironman bike for now...I'll get a nicer post eventually. Right now it needs a front derailleur 28.6 braze-on adapter, r559's, a water bottle holder seattube clamp adapter so I can have a water bottle, and I still need to swap my dual sided clip/platform pedals over. But it's getting there!
    2012 Trek Madone 5.2 64cm - 1984 68cm KHS 9spd/sti swapped to DA 7700
    2013 Trek Rumblefish Elite 23" - 2004 Santa Cruz Bullitt 21.5"

  23. #23
    bike whisperer Kimmo's Avatar
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    68! Fair enough... but guys like you who are right on the edge of the bell curve are generally out in the cold unless you go custom. Looking at where you have you seat, IMO you should definitely start saving for a custom frameset. IIRC, in a place like California where there'd be a few framebuilders around, you can get one for maybe less than $700 or something...

    What are those cranks, BTW? I dig the old Record and DA stuff, but looking at a pair of 70s DA cranks I've got here, they're prolly a bit flexy unless you're a real beanpole.

    Quote Originally Posted by thirdgenbird View Post
    If he uses 700x35 tires and/or fenders it will look fine.
    If it has mudguards, my interest in the bike's aesthetics usually evaporates. But for mine, that's still too much gap for a 35mm tyre; you could fit a motorbike tyre in there. I've always felt that method of seatstay attachment looks downright agricultural (like bolts on the other end, even on otherwise sweet carbon); fastback or wishbone FTW.

  24. #24
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    Quote Originally Posted by Blind View Post
    don't think I need fenders, I commute in socal, lol.

    I do want a nicer seatpost, unfortunately the DA kit I bought came with a 27.2 post and my bike uses a 26.4, so I stuck the DA post on my ironman bike for now...I'll get a nicer post eventually. Right now it needs a front derailleur 28.6 braze-on adapter, r559's, a water bottle holder seattube clamp adapter so I can have a water bottle, and I still need to swap my dual sided clip/platform pedals over. But it's getting there!
    I have a decent 26.4 going to waste in my parts bin.

  25. #25
    bike whisperer Kimmo's Avatar
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    Does it have enough adjustment range to work back to front?

    Looks like this bike needs a TT post, or one with a circular rail clamp assembly...

    606694451_6c3c5df6eb.jpg

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