Why are Road Bicycles not manufactured with Disc Breaks as with Mountain Bikes?

Answer 1

The two main reasons,
1) weight (roadies want the lightest parts)
2) cost (while some high-end rim breaks are costly, they don't come close to a high-end set of disk breaks)

As a side note, mountain bikes will see worse conditions than a road bike. typically a mtn bike will see mud, sand and water on a regular basis, and disks will take this better that rim breaks. To a mtn biker stopping is just as important as going.

Answer 2

Avid make some disc brakes for road bikes.

But the reason I think is that road bikes doesn't need them. They're just weight.

Disc brakes for mountain bikes are better because they're more powerfull and have better modulation, and mud and rain doesn't affect them (other than they squeal like a pig).

But road bikes don't need that power, there is general better traction on pavement than dirt, and some standard brakes are more than enough.

Also, if you put some disc brakes probably you would stress the fork and chainstays (or seatstays) by the brakes.

Answer 3

It's not necessary. The amount of stopping power you get from standard road brakes is working on a much sticker tire with a much longer "lever." Think about it: if you have a stick that's 26" and one that's 27", and tried to use each stick for a lever, the longer stick would allow you to put more leverage on what you're trying to pry.

Same thing with road bikes. They have very sticky tires, but they are skinny and go very fast. The taller wheel lets sidepull calipers get plenty of stopping power. Weight and aerodynamics are serious concerns as well, and when disc brakes REQUIRE heavier hubs as well as three cross lacing and thicker spokes, that eliminates them from the "light, simple and sexy" category.

Answer 4

hear, off hand i could say mountain bike, pass usa stressful tail, 29in wheel in the journey that your community bike save caters to them, possibly a cyclocross (drop bar, sounds like a highway bike yet strengthened physique with sufficient clearance to run 45cm tires) yet those adult adult males that say hybrids (I evaluate hybrids any bike that doesn't have an linked race) are off base. Hybrids gets you not greater helpful of a artwork out than walking and if this is all you prefer this is large. they are made for individuals that have been injured on motorcycles that have been too large or too small and now they experience those a million/2 motorcycles because of the fact of it. If human beings took the time to purchase the properly suited length and have the bike save do even the main rudimentary bike fit they does not have this situation. i've got seen it time and time back, the greater stretched out you're, the faster you pass, the greater helpful workout. nevertheless in case you're too stretched out then you definately will adventure numbness in the palms. the better the seat the less soreness on your knees yet too severe will reason saddle sores. Seats are continuously problematical, yet stable shorts (approx. $one hundred fifty) help. respected seat agencies could have a demo application via a stable bike save. Saddle place is rather significant even though it nevertheless boils all the way down to trial and mistake. there is numerous themes which will at last might desire to be addressed yet this sufficient to get you going.

Answer 5

Primary reason is weight. They weigh too much for a road bike, but there is a type of road bike, a commuter, that does have disk brakes. Go to www.trekbikes.com, and take a look at the Portland. It is an incredible bike!

Answer 6

The grip of disc brakes for DISC -SPECIFIC rims, spokes are custom-designed for the mountain bike, and trail conditions dictate that disc brakes are REQUIRED for rough riding and the worst terrain off road.---road bikes are not as frenzied as hammerheads----with all the rock gardens, dangerous black diamond plethoras, freeriding handling skills that got pro riders worldwide attention! And whats great is the availability of RIM BRAKES ( non-disc) remains in the brake gear market to this day for those who find disc-brakes EXPENSIVE----

Answer 7

disc brakes are not any better than a great set of sidepulls and with a road bike the idea is not to stop at all. We are in a game of pure speed and wieght is a huge issue

Answer 8

too much weight, on of the the most important things on a roadbike is keeping it light. there are a few commuter style radbikes with discs, but the traditional ones dont have them. also they dont need them. the only reason mountainbikes do is because dust gets on the rim so a vbrake wouldnt work very well. hope this helps

Answer 9

Mostly because the wight of the larger hub and the whole disc mechanism wight

Answer 10

If you have that good a brake on a skinny road tire you will spend more time on your butt on the ground instead of the saddle.