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1 Attachment(s)
Here´s mine: Airborne Carpe Diem. Sad to say, no longer available except used since Airborne is gone.
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Originally Posted by Sci-Fi
There's a growing demand for disc brake equipped road bikes. Obviously there's a weight penalty, but it may stem from mtn bikers moving to road bikes and/or consumers making the link to their disc brake equipped cars and feel it's a superior braking system. Wouldn't be surprised if hydraulic disk brake systems start showing up for road bikes...they are certainly gaining momentum on the mtn biking scene as well as larger rotors.
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Originally Posted by Sci-Fi
There's a growing demand for disc brake equipped road bikes. Obviously there's a weight penalty, but it may stem from mtn bikers moving to road bikes and/or consumers making the link to their disc brake equipped cars and feel it's a superior braking system. Wouldn't be surprised if hydraulic disk brake systems start showing up for road bikes...they are certainly gaining momentum on the mtn biking scene as well as larger rotors.
Rm brakes are atrocious in the wet, thats the number one reason I want disc |
Originally Posted by unkchunk
Rim wear. It depends on each rider's individual conditions (weight, terrain, stop lights, road grim, etc.) and you may not have had a problem with it. But my bike is only a year old and I'm starting to wonder if my front rim will last another 6 months. I can't be replacing a new front wheel every year and a half. So I'm thinking a front disc brake would be a good solution for me. But I'm going to pass on the rear disc.
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Originally Posted by UmneyDurak
So basically it's more of a perceived need, and not actual real need.
What are the benefits of disc brakes over rim brakes? Here are many points that have been widely acknowledged, some more or less than others, depending on the brakes being compared - *All-weather performance (little or no change due to water, mud, ice) *Low maintenance (setup calipers once & forget) *Long pad life *More stopping power for less effort (less forearm “pump-up” on long down hills) *More control - better modulation (smooth grab-free power application and less wheel lock-up) *No more worn out rim sidewalls *Can knock a wheel out of true and still ride, with no effect on braking. *More mud clearance (those who ride in mud and leaves know what that means!) Are disc brakes better than rim brakes? Usually our braking performance is limited more by the friction between tire and trail than by the friction between pad and rim. If we can lock up a wheel, then locking it up using less power is hardly much of an improvement. But the gain here would be during long descents where less finger pressure would lead to less arm strain. With disc brakes the maker gets to make the whole package - pads, rotor, lever, cylinders - so they can engineer them to compliment each other with minimum compromise. The limiting factor with rim brakes has got to be the soft alloy rims and pads that surrender stopping ability because of their needed softness necessary to prevent damage to these rims. Another limiting factor is their closeness to the water and mud that we ride through. But we do find that power, modulation (smooth application of that power), longevity, adjustability are generally better with disc brakes. Disc brakes suffer far less than rim brakes in poor conditions. Remember the days before disc brakes?: Toeing-in Shaving off that lip Scrubbing with a toothbrush Digging-out embedded grit Resetting the tension on those soft springs Not being able to get the wheel out Getting the angles right Changing the angles as the pads wore down Cleaning that aluminium sludge off the rims Squeal Cleaning the rims again! Concave rims Splitting rims Looking for gritty puddles to help you stop when it was raining Worn bushes Greasing cables Replacing cables? Ah! Those were the days! Fair character-building it was! Brings a tear to my eye... or at least it would if I was not s******ing at the thought of people STILL doing that! With all that being said, There's nothing wrong with rim brakes and they will do the job at hand and have done so for decades. It all depends on your local riding conditions, whether one would benefit from disc brakes or not. Like anything, what type of brakes one chooses or prefers could come down to a personal choice or weight considerations for the more competitive rider. Personally, I expect that my next road bike will have disc brakes. |
Originally Posted by Sci-Fi
Not necessarily. Many MTN bikers swear by disc brakes. Just read the FAQ at mtbr:
One person made this comment My neighbor road bike has disc brakes and he says he can slow down/stop with a lot less pressure on the levers...even one finger can control the bike braking. With all that being said, There's nothing wrong with rim brakes and they will do the job at hand and have done so for decades. It all depends on your local riding conditions, whether one would benefit from disc brakes or not. Like anything, what type of brakes one chooses or prefers could come down to a personal choice or weight considerations for the more competitive rider. Personally, I expect that my next road bike will have disc brakes. |
Originally Posted by UmneyDurak
Exactly, I doubt 95% of commuters or road bikers encounter conditions where they actually need them. There is just a perceived need because of what you listed above. When in reality rim brakes would work just as good for their riding environment.
There's a reason some of us are big fans of disc brakes, and it's got nothing to do with the desire to spend more money or impress someone. Need is a pretty worthless term. You don't need a bike at all if your kid has a big wheel in the garage... |
Originally Posted by JeffS
There's a reason some of us are big fans of disc brakes, and it's got nothing to do with the desire to spend more money or impress someone.
Need is a pretty worthless term. You don't need a bike at all if your kid has a big wheel in the garage... |
Originally Posted by UmneyDurak
Maybe it's the wheels? Just saying. First time I really heard of that particular problem.
I went out of my way to purchase a bike with disc brakes for a number of the reasons mentioned in this thread: - wet weather stopping power - rim wear - squealing rims - brake muck & grime - short pad life - fouled cables I do commute every day, rain or shine, and all of the problems that I mentioned above were a reality of rim brakes. I no longer have any of those problems. The maintenance on my brakes & cables and grime on my bike decreased significantly with disc brakes. |
Originally Posted by UmneyDurak
Exactly, I doubt 95% of commuters or road bikers encounter conditions where they actually need them. There is just a perceived need because of what you listed above. When in reality rim brakes would work just as good for their riding environment.
If you live in a wet environment, then disc brakes have real advantages. If you don't or if you don't often ride in the rain, then the because of the cost & weight, disc brakes are probably unncessary. |
Well, I'm moving to the Seattle area over the summer, and when I get a job there I plan on having a bike that I can ride 365 days a year, rain, shine, or...snow? Oh, I guess I should be looking for a mountain bike, too.
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Originally Posted by fat_bike_nut
Well, I'm moving to the Seattle area over the summer, and when I get a job there I plan on having a bike that I can ride 365 days a year, rain, shine, or...snow? Oh, I guess I should be looking for a mountain bike, too.
Unless you're riding singletrack on the weekends, I'd lean more towards a road bike for commuting, but that's just my personal preference really. Different strokes... |
Hey, I'm no fan of mountain bikes myself. I'm more of a roadie too, which why I'd prefer a cyclocross bike when riding off-road, unless the trails get really technical. Then and only then will I switch to a mountain bike. But for snow, I think a mountain bike would be better than a road bike, since most road bikes (touring and cyclocross excluded of course) can't equip studded snow tires.
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Originally Posted by fat_bike_nut
Hey, I'm no fan of mountain bikes myself. I'm more of a roadie too, which why I'd prefer a cyclocross bike when riding off-road, unless the trails get really technical. Then and only then will I switch to a mountain bike. But for snow, I think a mountain bike would be better than a road bike, since most road bikes (touring and cyclocross excluded of course) can't equip studded snow tires.
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I commute, ride, and do training rides in the rain. Just not a whole lot of rain around here I guess.
Originally Posted by greenstork
If you've never heard of rim wear problems in wet weather regions then I can't imagine that you commute a lot in the rain. It's possible to go through a set of rims once every 1-2 years in Seattle if you commute every day, depending on your mileage, obviously.
I went out of my way to purchase a bike with disc brakes for a number of the reasons mentioned in this thread: - wet weather stopping power - rim wear - squealing rims - brake muck & grime - short pad life - fouled cables I do commute every day, rain or shine, and all of the problems that I mentioned above were a reality of rim brakes. I no longer have any of those problems. The maintenance on my brakes & cables and grime on my bike decreased significantly with disc brakes. |
Originally Posted by greenstork
C'mon, need is a relative term. Could we all get by with downtube shifters? Yes probably, we don't need integrated shifters or barcons. Do we really need 9-10 speed rear cassettes? No, we don't really need all of those gears. Do any of us really need $1000-1500 bikes? No, probably not, we could easily get by with much less.
If you live in a wet environment, then disc brakes have real advantages. If you don't or if you don't often ride in the rain, then the because of the cost & weight, disc brakes are probably unncessary. |
Originally Posted by UmneyDurak
I commute, ride, and do training rides in the rain. Just not a whole lot of rain around here I guess.
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Originally Posted by greenstork
And if I lived in a drier climate, I would have saved my money on more expensive hubs & brakes and sunk that money into a Titanium frame instead :) If only Ti bike makers could configure a better dropout for disc brakes... coming soon I suppose.
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Originally Posted by UmneyDurak
Can't you just swap a fork and have disk brakes on the front only?
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Originally Posted by UmneyDurak
Can't you just swap a fork and have disk brakes on the front only?
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Originally Posted by fat_bike_nut
I've wondered about that myself. Seeing as how about 95% of my braking as it stands right now is only done with the front brake and all.
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My first winter commuting I was running V brakes. I'll never do that again. And I'll gleefully enter into a flame war with anyone who disses discs. They're superior,end of story.
BTW,got some updates for the first page: Schwinn DBX - if by rack mount you mean rear braze-ons,yes. Tire clearance should be at least 35's,maybe as big as 38's. Novara Element - yes rear eyelets,just in a bad spot. Tire clearance is 32 for cross tires,maybe a little bigger with slicks. |
Has anyone tried brazing your own disc brake mounts on a frame / fork? If so, where can you get them?
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Originally Posted by Brian Sorrell
Has anyone tried brazing your own disc brake mounts on a frame / fork? If so, where can you get them?
http://www.novacycles.com/catalog/pr...roducts_id=811 If you just want front disc brakes, just swap out the fork for one of the dimension disc-only forks. 1" and 1 1/8" size threadless, might be possible to thread them to fit an older setup. |
Originally Posted by dynaryder
My first winter commuting I was running V brakes. I'll never do that again. And I'll gleefully enter into a flame war with anyone who disses discs. They're superior,end of story.
I think discs are not needed if you live in a mostly dry area. Superfluous and a waste of money that could be spent on upgrading other components on your bike like the drive-train. I stated in another thread that I see their uses in rain, mud, and out-of-true rims. I do not see their uses in plain dry road conditions. I have test-ridden a bike with disc brakes (Trek SU200) and have seen absolutely no difference in stopping power between that and the cantilevers on my aunt's 1993 Schwinn mountain bike. I've had V-brakes that were stronger than the disc brakes on that Trek. Seeing as how the SoCal environment is rarely ever wet (or at least Central Orange County where we get rain like 3 days out of 365), discs are not needed down here on the streets. By the way, thanks for the info on the Novara Element. I'm not considering that thing anymore, now that I know that it could only go up to 32's on the knobbies. I think the Schwinn DBX has everything I'm looking for in a road commuter for when I move to Seattle. It's got a triple chainring setup on front, which should make the hills less painful to climb. |
Originally Posted by fat_bike_nut
I have test-ridden a bike with disc brakes (Trek SU200) and have seen absolutely no difference in stopping power between that and the cantilevers on my aunt's 1993 Schwinn mountain bike. I've had V-brakes that were stronger than the disc brakes on that Trek.
The Schwinn World DBX you are thinking about buying comes with the Avid BB-7, which is pretty much the best you can get in a mechanical setup without going to juicy's. |
Originally Posted by Sci-Fi
That's probably because the pads weren't broken in yet/correctly (assuming the pads were adjusted correctly) or the entry level Shimano M465 that comes with the Trek SU200. Takes about 10-20 hard stops before the pads are broken in. Pretty much the same break-in procedure as a car or motorcycle.
The Schwinn World DBX you are thinking about buying comes with the Avid BB-7, which is pretty much the best you can get in a mechanical setup without going to juicy's. |
Originally Posted by fat_bike_nut
Okay, then :p
I think discs are not needed if you live in a mostly dry area. Superfluous and a waste of money that could be spent on upgrading other components on your bike like the drive-train. I stated in another thread that I see their uses in rain, mud, and out-of-true rims. I do not see their uses in plain dry road conditions. I have test-ridden a bike with disc brakes (Trek SU200) and have seen absolutely no difference in stopping power between that and the cantilevers on my aunt's 1993 Schwinn mountain bike. I've had V-brakes that were stronger than the disc brakes on that Trek. Seeing as how the SoCal environment is rarely ever wet (or at least Central Orange County where we get rain like 3 days out of 365), discs are not needed down here on the streets. |
Neener neener. Discs rule,rims drool! :p
FYI,I've had to adjust the pads on like 3 or 4 of my disc bikes after I bought them. No idea why the shops didn't do it properly.:rolleyes: As for retrofitting discs,there's 2 websites out there that sell products to mount discs to rim brake forks/frames. Too lazy to check myself,but if you search the forums you shold be able to find them. Also note that most discs won't work with road levers. The Avid BB7 does. Problem Solvers makes a pulley device that mounts in-line between the lever and caliper that takes up the slack. I used their V brake model when I swapped my Fuji's canti's for V's and they worked really well. I'm rather surprised by my Element myself. If a cross bike has discs it's not legal for most competitions,plus more cross bikes are prolly commuted on than raced anyway,so you'd figure they would have more tire clearance. A note on the DBX;mine's an '06 and when I got it the front reflector would interfere with the front cross brake lever. When you used the cross lever it would hit the reflector(drop lever worked fine). I complained to Schwinn about the design(just use a reflector that sticks out farther),but didn't hear anything back. Just something to look out for. If you get an '07 and it hits,just ditch the reflector. |
Originally Posted by JeffS
Getting pretty far off the road bike topic now... and the subjectiveness of need has already been discussed. Sorry to further derail the topic, just disappointed to see an informative thread get hijacked by people with little to no interest in the subject.
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