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Road bikes with Disc brakes!

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Road Cycling “It is by riding a bicycle that you learn the contours of a country best, since you have to sweat up the hills and coast down them. Thus you remember them as they actually are, while in a motor car only a high hill impresses you, and you have no such accurate remembrance of country you have driven through as you gain by riding a bicycle.” -- Ernest Hemingway

Road bikes with Disc brakes!

Old 02-09-13, 12:16 PM
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RaceVW14
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Road bikes with Disc brakes!

I really like this idea!
As someone who is a car guy & hasn't rode a bicycle in 40 years seeing the disc brakes on a road bike made complete sense to me, easy modulation & the simple fact they will work the same every time you use them made my purchase of a Specialized Secteur Expert Disc an easy choice.
I was surprised to learn that this was the first disc brake Secteur my LBS had sold & wondered why they aren't selling better, old habits are hard to "brake" I guess!

The first bike I bought was a Trek mountain bike with disc brakes, got it last August when I didn't know what kind of riding I was going to do, we have a very good trail system in Tulsa/Broken Arrow so I ended up doing all paved trails.
Everyone told me what a big difference a road bike would make & man was it!
It was like going from a truck to a GT car!

My Secteur
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Old 02-09-13, 12:28 PM
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FixedDriveJess
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Disc brakes tend to be on the heavier side.
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Old 02-09-13, 12:40 PM
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How many miles on it so far and which saddle bag is that?
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Old 02-09-13, 12:42 PM
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Originally Posted by FixedDriveJess View Post
Disc brakes tend to be on the heavier side.
And they make for laterally weaker wheels. I like them on my commuter and my mountain bike. I like the hydraulics on my mountain bike much more though. Don't really see a need for them on my road bikes, but there aren't any extended descents where I normally ride.
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Old 02-09-13, 01:14 PM
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Originally Posted by bikfor View Post
How many miles on it so far and which saddle bag is that?
I picked it up last week & have 154 miles on it so far, the bag is a Specialized "Dirt Bag", it has 2 compartments & an expandable bottom.

As for weight this bike is so much lighter than my Trek Marlin that any weight difference isn't a problem for me.
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Old 02-09-13, 01:33 PM
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I wouldn't trust these on a fast descent. So little friction surface will just heat up and I don'T want to know what happens next.....
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Old 02-09-13, 02:20 PM
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They're not popular because the pros don't (and won't) use them. Wheel changes in a race would take way too long with discs.
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Old 02-09-13, 02:23 PM
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Originally Posted by generalkdi View Post
I wouldn't trust these on a fast descent. So little friction surface will just heat up and I don'T want to know what happens next.....
Disc brakes are designed to be brakes, wheel surfaces are modified to be brakes.
Any descent that would over heat those stainless steel disc brakes would melt a wheel brake setup of carbon fiber or aluminum!
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Old 02-09-13, 02:27 PM
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Nice looking bike.

You get two BF OCP demerits for taking the picture with the bike facing the wrong way...not that there's anything wrong with going the other way, but...you know...or you will find out.

Enjoy it!

I agree that disc brakes will be slowly adopted by roadies. It seems the cyclocross community has already jumped on board. It will be slower for roadies due to weight concerns, inertia, concerns that "the pros don't use them" etc.
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Old 02-09-13, 02:31 PM
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Originally Posted by datlas View Post
Nice looking bike.

You get two BF OCP demerits for taking the picture with the bike facing the wrong way...not that there's anything wrong with going the other way, but...you know...or you will find out.

Enjoy it!

I agree that disc brakes will be slowly adopted by roadies. It seems the cyclocross community has already jumped on board. It will be slower for roadies due to weight concerns, inertia, concerns that "the pros don't use them" etc.
LOL!
I've read the "Rules" of bicycling & the only one I take to heart is rule 5..Toughen the Frack up!
I was just highlighting the disc brakes by pointing it that way but I'll do better next time!
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Old 02-09-13, 02:51 PM
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Originally Posted by datlas View Post
I agree that disc brakes will be slowly adopted by roadies. It seems the cyclocross community has already jumped on board. It will be slower for roadies due to weight concerns, inertia, concerns that "the pros don't use them" etc.
The cross guys are having trouble with brake pads being eaten up in particularly muddy races.

https://velonews.competitor.com/2013/...ona-mud_271112
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Old 02-09-13, 02:52 PM
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Originally Posted by RaceVW14 View Post
LOL!
I've read the "Rules" of bicycling & the only one I take to heart is rule 5..Toughen the Frack up!
I was just highlighting the disc brakes by pointing it that way but I'll do better next time!
It's "Harden The **** Up."
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Old 02-09-13, 03:28 PM
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Originally Posted by svtmike View Post
The cross guys are having trouble with brake pads being eaten up in particularly muddy races.

https://velonews.competitor.com/2013/...ona-mud_271112
Sounds like teething problems, new tech.
Hyd multi piston calipers & new brake compounds will fix that.

This is the last paragraph of that story though,
"​Saturday’s mud added pounds to the bike within a lap but was mostly thrown away from the center of the wheels. So riders with rim brakes carried a lot more mud dangling from their stoppers, those with mini V-brakes had wheels that barely turned due to the tight mud clearance, and those with disc brakes had mostly clean brakes that worked well."
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Old 02-09-13, 04:05 PM
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Disc brakes do however allow an astute wheel builder to use special disc brake rims with a very short sidewall that reduces weight out at the rim part of the wheel. Saving weight way out there may easily compensate for the extra weight near the hub.
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Old 02-09-13, 04:12 PM
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We need a sticky thread with links to all the threads concern disc brakes. There not fit for every rider nor fit for every purpose, but claiming that the technology is immature is tired and inaccurate. The technology is maturing no doubt; Avid, Shimano and others have improved rotor technology. My opinion backed by observation of disc brake capability on my own rides is that the heavier you are, the tougher your descents, the more you will benefit from disc brakes. As always YMMV.
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Old 02-09-13, 04:49 PM
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Originally Posted by YOJiMBO20 View Post
They're not popular because the pros don't (and won't) use them. Wheel changes in a race would take way too long with discs.
Exactly right....when the pros change to them, and they will, the rest of us lemmings will follow suit. All we like sheep.....!
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Old 02-09-13, 05:29 PM
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That's a good-looking bike. Enjoy.
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Old 02-09-13, 06:02 PM
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Originally Posted by svtmike View Post
The cross guys are having trouble with brake pads being eaten up in particularly muddy races.

https://velonews.competitor.com/2013/...ona-mud_271112
A solution is in the works...
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Old 02-09-13, 06:02 PM
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Road bikes with discs are coming. I bet it would really open up options for carbon rims.

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Old 02-09-13, 06:17 PM
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Originally Posted by rjones28 View Post
That's a good-looking bike. Enjoy.
Thanks, I will!
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Old 02-09-13, 06:20 PM
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Originally Posted by surgeonstone View Post
All we like sheep.....!
Isiah/Handel reference noted.
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Old 02-18-13, 10:14 AM
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I built up a winter/commuter bike with discs. I like 'em, cuz I don't have to buy a rim every few months. They work well, fairly easy to setup and no drag. I use BB7s too.
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Old 02-18-13, 10:26 AM
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Originally Posted by pursuance View Post
How is the ride with this aluminum frame and how are the discs performing?

I'm an oldster getting back into road riding. Being car free I bought a Trek DS 8.6 w/hyd Shimano discs and will up-size the front to 180mm just for better balance/feel not for more stopping power.

But... The DS is a truck at 30.5# w/o rack & fendres, so i'm shopping for a lite road bike w/discs for urban/road riding in club rides.
Being a Clyde @ 230# 32 or 28 spokes are a must for stopping w/authority imo.

Note: For long descents aluminum disc carriers can really add to heat dissipation.
The only thing I can compare it to is my Trek Marlin & it is much smoother to ride, the discs are working great!
My regular rides are 53 miles of mostly flat river & rails to trails paths & a 33 mile ride that is all hills.
The disc brakes have lots of power & are easy to modulate.
So far I'm very happy with it.
At 6'2" 250# I'm a big guy too & the Secteur hauls me around great.
There is also the Secteur sport disc which has the same frame & fork but at around $1K less.

Here is another pic with the bike "posed correctly"!
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Old 02-18-13, 10:36 AM
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they would be cool for big descents, but otherwise i'm not a fan of disc brakes on roadies.
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Old 02-18-13, 11:07 AM
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Originally Posted by pursuance View Post
...will up-size the front to 180mm...i'm shopping for a lite road bike w/discs...long descents...
While a 180mm rotor does provide improvements in both heat tolerance and modulation on the road over 160mm, I suggest a 200mm front rotor instead. If high speeds & long descents, or short steep technical descents, are any part of the riding routine, a larger rotor will be appreciated. One does not need to be a heavy weight to realize benefit. The new crop of road bikes with small diameter disc rotors are not suited for all riding scenarios, just like 53T big rings and corn cob cassettes are not suited for all fitness levels and topographies.
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