Short reach brakes on frame designed for long reach brakes

[landotter]

[email protected] wrote:
> [email protected] wrote:
> > I have 2005 Campagnolo Centaur dual pivot calipers. The catalog lists
> > them as having a 42-52 mm range. I am considering purchasing a new
> > sport touring frame and have the option of getting one built for short
> > reach calipers or long reach calipers. Since I already own the Centaur
> > calipers I would prefer to use them on the new frame. But I also want
> > to run 25mm or 28mm tires AND fenders on the rear of the bike. Gilles
> > Berthoud or Honjo fenders. I can't keep fenders on the front wheel due
> > to my method of hauling the bike in the trunk of the car with the rear
> > seat folded down and the bars turned 90 degrees. I would have to put
> > the front fender on at the start of a multi-day ride. Front tire would
> > be 23mm or 25mm most likely, with or without fenders.
> >
> > 1. How well will dual pivot short reach brake calipers work on a frame
> > designed for long reach calipers?
> > 2. What is the largest tire a short reach dual pivot caliper (Centaur)
> > will fit with a fender?
> >
> > Note I am defining short reach as what is currently sold in brake
> > calipers, current Record, Chorus, Dura Ace, etc. Short reach being
> > approximately 40-50mm range. And defining long reach as the newly
> > marketed calipers designed for larger tires and fenders. Examples
> > being Shimano BR-R600 and Nashbar/Tektro Long Reach calipers.
>
> Not sure of how well short reach brakes will work with fat tires and
> fenders. However, you can get a pair of nice, functional long reach
> calipers at nashbar for very little. Here is the link:
>
> http://www.nashbar.com/results.cfm?...ry=1014&storetype=&estoreid=&init=y&pagename=
> You can then sell you short reach calipers at ebay or the marketplace.

Yup, those are great braking calipers, and even the included brake
shoes are marvelous. Finish sucks, but throw a polishing disk on your
bench grinder and shine them up if that bugs you.

After you flog the Campy stuff on Ebay or Craigslist, you'll end up
with money in your pocket, and a non-kludgy brake setup.

 

[dvt]

Mark Hickey wrote:
> I've
> certainly never had a negative report on the few bikes that I've sold
> with Tektro brakes (normally for those who need long-reach calipers,
> but don't want to pay R600 pricing).

What bike(s) do you sell that use long reach calipers? Custom only?

--
Dave
dvt at psu dot edu

Everyone confesses that exertion which brings out all the powers of body
and mind is the best thing for us; but most people do all they can to
get rid of it, and as a general rule nobody does much more than
circumstances drive them to do. -Harriet Beecher Stowe, abolitionist and
novelist (1811-1896)

 

[landotter]

[email protected] wrote:
[snip]
> I have one of the 521A extra-sprinkle brakes, used to adapt
> an old Cannondale touring frame from 27" to 700c. It
> works quite well. However, the original pads were made of
> cheese, and I replaced them with Koolstop shimano
> cartridges (the cartridge holders are Shimano compatible).

It's funny, like I mentioned in a previous post, I've got the cake-cone
vanilla version that comes with the utilitarian looking molded shoes,
and I like them better than Kool-Stops. I like them so much, that I'm
worried that I won't be able to find replacements when they wear out. I
rode them in the rain for 15 miles yesterday, and was just astonished
at the stopping power.

 

[Jay Beattie]

Art Harris wrote:
> Jay Beattie wrote:
> > > > See if you can get drop bolts. That seems to be the only option if you
> > > > want the frame designed for long reach calipers -- other than the
> > > > non-aesthetic option of Tectro or Shimano, etc., cheap-o long reach
> > > > brakes.
> > >
> > > What's cheapo or non-aesthetic about the Shimano R-600 brakes? These
> > > are Ultegra level.
> > >
> > > http://www.awcycles.co.uk/products.php?plid=m5b0s100p1338&z=441
> >
> >
> > I have no problem with them. The OP did. They were not "aesthetic."
> > See above. -- Jay Beattie.
>
> No, he was complaining that the Tektro/Nashbar brakes were
> un-aesthetic. He said the R-600 were too expensive.
>
> Actually, I bought a rear R-600 caliper on sale from Nashbar at pretty
> good price about a year ago (forget exactly what it was, maybe $30).

You're right. I was thinking this was just a Campy or nothing kind of
deal (Campy = aesthetic). Lickbike has the R-600 for $130 which seems
like a lot. I would just be unaesthetic and get the Tektro if I wanted
to keep fender clearance. If not, I would get some drop bolts. -- Jay
Beattie.

 

[[email protected]]

Rivendell sells the Ultegra R600 long-reach brake for $115/pair:
http://www.rivbike.com/webalog/brakes/15094.html

Harris Cyclery has the nicer Tektro 521AG brakes for $50/pair:
and the Shimano R600 Long-reach Dual-Pivot Calipers for $89.95 each
and the Shimano A-550 (RX-100) 47-57 mm Long-reach Dual-Pivot Calipers
$39.95 each
http://sheldonbrown.com/harris/brakes.html#calipers

I have a set of the RX-100 long-reach calipers on one of my bikes,
upgraded with Koolstop salmon pads, and they work very well.

If you want the maximum clearance for caliper brakes, have your bike
designed for the new, ultra-long-reach (55-73mm) Tektro R556 brake:
http://www.tektro.com/02products/08521ag.php

-Jim G

 

[Donald Gillies]

Drop bolts are out of production, both for dual-pivot and
traditional-pivot brakes. Correct me if I'm wrong, but I think your
only source for these bolts is ebay or a local swap meet.

I don't know why Koolstop doesn't make drop-pads, that would be SO
much simpler ..

- Don Gillies
San Diego, CA

 

[Jay Beattie]

Donald Gillies wrote:
> Drop bolts are out of production, both for dual-pivot and
> traditional-pivot brakes. Correct me if I'm wrong, but I think your
> only source for these bolts is ebay or a local swap meet.

That's too bad. Maybe I will put my old Campy drop bolts on eBay for a
billion dollars! Except those are for old single pivot brakes. O.K., a
half-billion! -- Jay Beattie.

 

[Mark Hickey]

dvt <[email protected]> wrote:

>Mark Hickey wrote:
>> I've
>> certainly never had a negative report on the few bikes that I've sold
>> with Tektro brakes (normally for those who need long-reach calipers,
>> but don't want to pay R600 pricing).
>
>What bike(s) do you sell that use long reach calipers? Custom only?

Yep.

Mark Hickey
Habanero Cycles
http://www.habcycles.com
Home of the $795 ti frame

 

[Hank Wirtz]

"JeffWills" <[email protected]> wrote in
news:[email protected]:

>
> Hank Wirtz wrote:
>>
>> I don't know of any US dealers, but I got mine from
>> http://cyclingbargains.com - a UK-based seller. They list for 28
>> quid, but minus VAT and plus shipping, I'd guess they're about $65 to
>> get the US. They come in silver and "carbon finish," which is just
>> painted to look like carbon, AFAICT.
>>
>
> These?
> http://www.rainbowinternet.net/shops/cyclingbargains/catalogue/categor
y
> 23/p1081 ??
>
> I'll bet you a dollar that they're rebadged Tektros. The shape of the
> arms and the pad adjustment look like these:
> http://www.nashbar.com/profile.cfm?category=69&subcategory=1014
&brand=&
> sku=11499
>
>
> Jeff
>

You owe me a dollar.

I put the Nashbars on the Cannondale I built for my sister-in-law, and
Tektro 521AGs on my brother's Peugeot. Both of those are significantly
different from each other, and even more different from the Ambrosios on
my Peugeot. The Ambrosios have the stiffest arms of the three, and the
Nashbars are the spongiest.The Tektros have the strongest springs, and
the Ambrosios have the lightest.

It would not surprise me in the least if they're Taiwanese, but the arm
shapes, spring attachment points and barrel adjusters all lead me to
believe that they're not Tektros.

 

[dvt]

Mark Hickey wrote:
> dvt <[email protected]> wrote:
>> What bike(s) do you sell that use long reach calipers? Custom only?

> Yep.

Too bad. I might lobby my financier for a Hab sport touring bike, but
I'm not willing to pay the price for a custom frame.

--
Dave
dvt at psu dot edu

Everyone confesses that exertion which brings out all the powers of body
and mind is the best thing for us; but most people do all they can to
get rid of it, and as a general rule nobody does much more than
circumstances drive them to do. -Harriet Beecher Stowe, abolitionist and
novelist (1811-1896)

 

[Mark Hickey]

dvt <[email protected]> wrote:

>Mark Hickey wrote:
>> dvt <[email protected]> wrote:
>>> What bike(s) do you sell that use long reach calipers? Custom only?
>
>> Yep.
>
>Too bad. I might lobby my financier for a Hab sport touring bike, but
>I'm not willing to pay the price for a custom frame.

I probably should have been more specific (but didn't want it to come
across like an ad). I often do "non-stock" frames with alterations
like raising the brake bridge height (or leaving off the integral seat
post binders, or using 1-1/8" head tubes, for example) without a
custom up-charge. It's just that we don't have these options "in
stock" at any given time.

Mark Hickey
Habanero Cycles
http://www.habcycles.com
Home of the $795 ti frame

 

[MykalCrooks]

<[email protected]> wrote in message
news:[email protected]...
> Rivendell sells the Ultegra R600 long-reach brake for $115/pair:
> http://www.rivbike.com/webalog/brakes/15094.html
>
> Harris Cyclery has the nicer Tektro 521AG brakes for $50/pair:
> and the Shimano R600 Long-reach Dual-Pivot Calipers for $89.95 each
> and the Shimano A-550 (RX-100) 47-57 mm Long-reach Dual-Pivot Calipers
> $39.95 each
> http://sheldonbrown.com/harris/brakes.html#calipers
>
> I have a set of the RX-100 long-reach calipers on one of my bikes,
> upgraded with Koolstop salmon pads, and they work very well.
>
> If you want the maximum clearance for caliper brakes, have your bike
> designed for the new, ultra-long-reach (55-73mm) Tektro R556 brake:
> http://www.tektro.com/02products/08521ag.php
>
> -Jim G
>


What is actual difference between Shimano R600 and Shimano A-550 long reach
calipers? I can see the pads are different, but does anybody know of
differences in metallurgy or design of bearings or bushings?

mC

 

[dvt]

Mark Hickey wrote:
> dvt <[email protected]> wrote:
>
>> Mark Hickey wrote:
>>> dvt <[email protected]> wrote:
>>>> What bike(s) do you sell that use long reach calipers? Custom only?

>>> Yep.

>> Too bad. I might lobby my financier for a Hab sport touring bike, but
>> I'm not willing to pay the price for a custom frame.

> I probably should have been more specific (but didn't want it to come
> across like an ad).

Even if it would have sounded like an ad, I opened the door.

> I often do "non-stock" frames with alterations
> like raising the brake bridge height (or leaving off the integral seat
> post binders, or using 1-1/8" head tubes, for example) without a
> custom up-charge. It's just that we don't have these options "in
> stock" at any given time.

Very interesting! In that case, I suppose it's tough to draw the line
between "stock" and "custom" bikes.

--
Dave
dvt at psu dot edu

Everyone confesses that exertion which brings out all the powers of body
and mind is the best thing for us; but most people do all they can to
get rid of it, and as a general rule nobody does much more than
circumstances drive them to do. -Harriet Beecher Stowe, abolitionist and
novelist (1811-1896)

 

[Sheldon Brown]

Quoth Donald:

> Drop bolts are out of production, both for dual-pivot and
> traditional-pivot brakes. Correct me if I'm wrong, but I think your
> only source for these bolts is ebay or a local swap meet.
>
> I don't know why Koolstop doesn't make drop-pads, that would be SO
> much simpler ..

Not such a good idea, I'm afraid. The threaded attachment of the brake
shoe to the caliper arm is plenty strong against the linear force
applied by braking, but if you were to make a "drop-pad" there would be
heavy _torsional_ loading to the bolt.

Applying torsional loads to single-bolt attachments is not a good
thing. The left side in particular would tend to get loosened by the
braking force.

If the pad were to slip, it would pivot upward so that it would rub on
the sidewall of the tire. This would wreck the tire in very short
order, and also possibly cause brake lockup.

Sheldon "Back To The Drawing Board" Brown
+---------------------------------------------------------+
| "Contrariwise," continued Tweedledee, "if it was so, |
| it might be, and if it were so, it would be; |
| but as it isn't, it ain't. That's logic!" |
| --Lewis Carroll, "Through the Looking Glass" |
+---------------------------------------------------------+
Harris Cyclery, West Newton, Massachusetts
Phone 617-244-9772 FAX 617-244-1041
http://harriscyclery.com
Hard-to-find parts shipped Worldwide
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