I'm thinking about getting canti posts brazed onto my sidepull Sam Hillborne to fit a wider tire / make wide tire installation easier. Canti brakes would be replacing Paul Racers.
If I go this route, what are the best options out there? I figure top of the line is Paul,
No, the top of the line is the Rene Herse cantilever.
but what's a more affordable brake? I see a lot of chatter around Shimano CX70, but hear they're discontinued. Is there a comparable option available now, or does it make sense to hunt down a used set of CX70s? If I splurge on Neo Retros, am I gaining anything functionally over other options?
Or a used set of the Shimano Deore XT wide profile cantilevers like the BR-M730
or this one
?
But really, there's just nothing better than this one for a nice
bike
since you can be sure the posts will be put in exactly the right place.
I'd be very surprised indeed if the cx70 had
more power than the Rene Herse cantilever. The low profile
design is noted for losing power as the pads get closer to the
rim.
Low profile cantilevers like this are very sensitive to straddle
cable adjustment, whereas mid-profile cantilevers like the Herse
brake are insensitive to it. All the complex documentation about
canti adjustment is based on the low profile design's sensitivity
to height of the straddle cable support. None of that is
applicable to the Herse design.
In both these cases, it should be noted, the straddle cable
length isn't adjustable per se; with the Shimano style various
lengths of straddle cable are available. A longer straddle cable
was promised at one point for the Herse brake, for special
applications, but I'm not sure if it's been made available yet, as
I don't see such a thing listed on their web site.
As for ease of setup, the Herse brake isn't like some smooth post cantilever brakes. Yes there is one nut holding the post in place and on loosening the bolt you can slide the pad in and out, rotate it and tilt it. But it's not quite like some, where undoing that one nut loosens everything - vertical, toe, and all the rest. There is no vertical adjustment, and toe is set either permanently once by bending, or using a notched washer. There also is no adjustment for spring tension.
Oh man, Those compass ones look super nice but I’d take the setup and power of the cx70/50 any day over those any day. I’m no expert mechanic but I’ve used cantis that with the way the compass ones do and, for me, they are a big pain. At this point I
-- Steve Palincsar Alexandria, Virginia USA
Hey Erik,
You are going to get a million opinions but Pauls are really easier than all other canti's to setup. The mechanism they use to control spring tension is just so easy to adjust. I also think getting some good Kool Stop pads makes a huge difference.
No adjustment required and no mechanism for adjustment because none is required beats Paul's system every time.
V brakes will probably offer the best stopping power, ease of set up and value. Depending on what levers you use and if long pull would present an option. Deore level V's etc.
I have CR720 cantis on a couple of bikes and am pleased with them. Kool Stop pads help a lot.
IanA
I'm thinking about getting canti posts brazed onto my sidepull Sam Hillborne to fit a wider tire / make wide tire installation easier. Canti brakes would be replacing Paul Racers.
There is a standard, it's just that not
everybody has followed it. Most cantilever brakes try to
incorporate a lot of adjustability to compensate for that.
Since the Herse brake is primarily intended for custom bikes,
the expectation is the builder will adhere to the published
specifications. In that context, it's a reasonable
expectation. Obviously that doesn't work really well for
retrofitting onto an existing frame made with any old whimsical
canti post spacing. However, it's not too likely you'd be
putting brakes that cost that much on such a frame in the first
place.
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My latest bike has Rene Herse cantilevers.
The bike is a JP Weigle, and it is 100.000% to spec. Alignment
is perfect. Of course, you would expect that.
I took this with my flip phone the other day while out test riding. I haven't actually finished 100% with the build and haven't sat down to photograph it.
This is the bike Peter was riding last year, and in many ways
it's very similar to the CdM bike -- only without the most extreme
weight shaving measures.
So because there is a different standard for bottom bracket threading to British, British BB threading is no longer a standard?
If you want to use the Herse brakes, distance between posts should be: 62 - 84 mm. According to discussions I've seen on the forums, back in the heyday of cantilever brakes on MTBs Shimano decreed that posts would be 80mm apart. Evidently in the past (perhaps even distant past) that spacing had been 60. The modern standard is 80mm, and it's said all the brakes designed in the last 25 years are built for that.
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Absolutely. I was enchanted with it from the
moment I first saw it at the Classic Rendezvous Weekend last
May. I know Peter Weigle loves the Mafac cantilevers, but he's
told me he was pleasantly surprised - and very surprised indeed
because the geometry is identical - at how much better the Herse
brakes perform than the Mafacs. And he's someone who knows how
to get the best out of Mafacs.
Beautiful bike, Steve. Built for the RH, and vice versa.
Tektro cr720's are a fine enough brake, and when set up properly, work as well as any. They have the significant advantage of using orbital brake pads and slotted pad holder mounts that greatly simplify setup. Just replace the astonishingly bad Tektro brake blocks with Kool-Stop Salmon pads
Also, the hardware on the brake is less-than-beautifully finished, if functional.
They punch well above their $45/bike price. Add $12 for Salmon pads up front.
If cost is no object, then the RH brakes work well in my experience. They are lovely as well.
Best Regards,
Will
William M deRosset
Fort Collins CO USA
Do the Tektros use one of those grub screws to
anchor the straddle cable?
I think there are lots of variables that makes for such a wide variety of opinions. The two main ones in my estimation would be brake setup and user expectation.
So because there is a different standard for bottom bracket threading to British, British BB threading is no longer a standard?
If you want to use the Herse brakes, distance between posts should be: 62 - 84 mm. According to discussions I've seen on the forums, back in the heyday of cantilever brakes on MTBs Shimano decreed that posts would be 80mm apart. Evidently in the past (perhaps even distant past) that spacing had been 60. The modern standard is 80mm, and it's said all the brakes designed in the last 25 years are built for that.
On 4/15/19 4:52 PM, Garth wrote:
--
Sorry Steve, no standard. A standard to be a standard must be universal, independent of brands of parts, frame or builder. British BB threading, that's a standard.
On Monday, April 15, 2019 at 3:41:21 PM UTC-4, Steve Palincsar wrote:
There is a standard, it's just that not everybody has followed it. Most cantilever brakes try to incorporate a lot of adjustability to compensate for that. Since the Herse brake is primarily intended for custom bikes, the expectation is the builder will adhere to the published specifications. In that context, it's a reasonable expectation. Obviously that doesn't work really well for retrofitting onto an existing frame made with any old whimsical canti post spacing. However, it's not too likely you'd be putting brakes that cost that much on such a frame in the first place.
On 4/15/19 3:21 PM, Garth wrote:
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And there is a significant difference between
formal standards (a specification that has been
approved by a standards setting organization) and de facto
standards (a specification (or protocol or technology) that
has achieved widespread use and acceptance – often without being
approved by any standards organization or receiving such approval
only after it already has achieved widespread use). Garth is
clearly thinking of formal standards, and seems to be dismissing
de facto standards entirely -- when in fact much of what we
consider to be "standard" is actually a de facto rather than de
jure formal standard.
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>Do the Tektros use one of those grub screws to anchor the straddle cable?
Hey Erik,You are going to get a million opinions but Pauls are really easier than all other canti's to setup. The mechanism they use to control spring tension is just so easy to adjust. I also think getting some good Kool Stop pads makes a huge difference.
...I'm weary of any claim that a given high quality cantilever brake is objectively better than the rest.
Darin: I daresay you are wary before being weary of cantilever advice.
All: General question: What are the respective benefits and defects of high profile and low profile cantilever brakes?
Biggest benefit to low profile cantilevers is their low profile: less likely to interfere with feet, bags, etc. Biggest drawbacks to low profile cantilevers are tricky setup, sensitivity to straddle cable height, geometry works against you as you get closer to the rim.
Flip those for mid-profile. Drawbacks, Possible interference
w/bags & big feet | small frames, benefits easier setup in
that not sensitive to straddle cable height.
Which style, and which make/model of that style, would you (singly) choose, and why?
I like the mid-profile cantilever brakes. My new bike was designed to use the Rene Herse cantilevers and built by a master craftsman and they're simply brilliant. The aesthetics are amazing: beautiful, almost jewel-like; as simple and minimalistic as it is possible to be; they weigh next to nothing; there's virtually nothing to adjust; and they work and feel just great, better than any other cantilever I've ever used before. And they don't squeal, either. With a frame my size, there are no concerns about hitting bags or feet. The classic solution to supporting a front rack was designed for just these brakes.
Do you mean these here?
If so, that's an interesting story. Here's a
better view, from last September, when these two were for sale
They began life as Campagnolo indexed bar end shifters. There's a discussion of the process on the Velocipede Salon: https://www.velocipedesalon.com/forum/f7/campy-down-tube-shifters-17341.html
It should be noted, this cannot be done with 11 speed Campagnolo
bar end shifters per the BQ article on the Weigle CdM entry, and
the 10 speed Campagnolo bar end shifters have been discontinued.
Enough about the brakes. Now please tell us all about those down tube shifters.
Damned indeed. That's some mighty serious money they're asking for them. They weren't just MTB: I had them on my Santana tandem, where they worked just fine. For that money, though, there's simply no way I'd choose them over the Rene Herse cantilevers.
Of course they fall into that category of components that I should stop extolling the virtue of, because it just drives up demand and prices!