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Disc Brakes; Yay or Nay?

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Disc Brakes; Yay or Nay?

Old 08-20-18, 11:39 AM
  #126  
indyfabz
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Originally Posted by DrIsotope View Post
Also, the things with the teeth are the sharpest things on a bicycle.
And puncture wounds can hurt like hell. I got one from a chainring. Thing got infected and was quite painful. Also speared myself with the end of a frayed cable that had lost its cap. That hurt as well.
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Old 08-20-18, 11:47 AM
  #127  
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the old Phil Wood Disc brakes used a disc of friction material ,
and the pads were steel.

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Old 08-20-18, 12:42 PM
  #128  
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Full disclosure: I do not like disc brakes. If you will be your own mechanic you will find them far fussier than rim brakes and that fussiness can be a major irritant.

Okay, with that said... I would opt for the disc brake bike. We all have to accept that they are the future.

Most bikes with rim brakes (calipers) will let you ride up to a 28mm tire most of the time. But what if the next ride would be better done with 32 or 35 or even 40 mm tires? Do you get a second bike? The disc brake bike will usually accommodate the bigger tire. If you have plenty of space to store a large collection of bikes then go ahead and buy the caliper fitted bike. But if you want to try to meet multiple needs with the fewest number of bikes then go for the disc equipped bike and learn to master the fiddling that they require.
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Old 08-20-18, 01:46 PM
  #129  
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Originally Posted by Jbarcs View Post
Okay, with that said... I would opt for the disc brake bike. We all have to accept that they are the future.
Do we really? They're the in thing right now, will they really hold up though? Especially so, when entry level bikes come with low end examples that don't stay adjusted, and people transitioning from far better at the price point V or caliper brakes start to associate them with poor stopping performance (as my wife has already decided with hers)?
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Old 08-20-18, 02:03 PM
  #130  
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Well, this is my 2 bits: If I didn't have a bike now and was in the market for my first good rider, I would most likely go for the disc brake feature. However, I have a couple of very high quality bikes and have invested in a number of wheelsets (4 spares sets including 1 for the Kinetic trainer I use in bad winter weather, ready to go and mounted with a trainer tire. Works with either bike!) This factor alone just about eliminates a new bike with a disc from contention. Unless you go absolute top end and dollar indifferent, the new bike will have a wheelset that is not up to snuff for me. My wheels and the flexibility of changing wheelset depending on the ride planned is worth more than the disc brake feature and another investment in high end wheels. I have a superlight climbing set and 2 sets of Mavic Exaliths that give me braking very comparable to the discs setups I've ridden even in the rain or wet. I've never had a problem with overheating tires on long descents and I've ridden down a few. I have topnotch DA 9100 rim brakes on both my bikes and try to ride with a bit of intelligence and foresight. My brakes have never failed me on the steepest downhills or the most sudden emergency where discs would have made a difference.

I'm not anti disc or pro rim. Unless I'm shopping in the $10,000-$12,000 range, from my own experience, I would be putting myself at a disadvantage in a number of ways.
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Old 08-20-18, 02:49 PM
  #131  
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Originally Posted by jefnvk View Post
Do we really? They're the in thing right now, will they really hold up though? Especially so, when entry level bikes come with low end examples that don't stay adjusted, and people transitioning from far better at the price point V or caliper brakes start to associate them with poor stopping performance (as my wife has already decided with hers)?

I'm not interested in a huge debate... just trying to advise the OP based on my experience. My rationale for my comments regarding the future was based largely on my experience searching for a canti bossed cx frame to build up for my son. Not an easy task anymore. How many folks are making canti cx or gravel or adventure bikes in 2018? No need arguing about the effectiveness or likability of one vs. the other. It's just happening whether we like it or not.
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Old 08-20-18, 03:40 PM
  #132  
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Opinion

I do like BB7s because of simplicity and most bike shops stock pads for them...Getting brake pads for hydraulic brakes can be a problem because there are just too many different models out there and most bike shops don't stock every type of disc brake pad on the market.
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Old 08-20-18, 03:59 PM
  #133  
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Who has time to live in the future unless he is not fully living in the present---in which case he is wasting both times.
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Old 08-20-18, 07:26 PM
  #134  
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Originally Posted by Jbarcs View Post
I'm not interested in a huge debate... just trying to advise the OP based on my experience. My rationale for my comments regarding the future was based largely on my experience searching for a canti bossed cx frame to build up for my son.
I'm not interested in a debate either, I'll agree with you for most gravel and CX applications, discs make more sense. MTB, without a doubt, and you'd never get anything else on a fatty. Just because they have a use in those applications tho, doesn't mean I foresee them taking over road and hybrid use, especially in lower end applications.

My wife just bought a bike with Tektro Mira brakes, for a tour. Didn't think anything of them, until she crashed and I had to jump on and tweak the brifters and shifting. Holy crap, are they atrocious compared to my Spyre and Shimano hydros. I couldn't believe how crappy they were, and I'm a guy who has $3 V brakes on another touring bike which stop well enough to feel comfortable hitting 45MPH coming down a 13% gravel grade.

If that is what goes out the door from the LBS on entry level bikes, I don't see them retaining market share in any large number.

Do remember after all, all the name brand manufacturers still sell freewheel bikes
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Old 08-20-18, 08:34 PM
  #135  
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Originally Posted by BirdsBikeBinocs View Post
Hello Folks.... First post here. My terminology may be amiss so cut me some slack.

I hope to purchase a road bike in the spring of '19. I've narrowed it down to a Cannondale Synapse Tiagra or a Scott Speedster 20.

On the Scott at Lim Bicycles I can get the Speedster with Disc Brakes for $825. Without the Disk Brakes it's $660.

Fact is I don't ride in inclement weather. Sure, anyone can get caught in a shower or downpour but honestly it rarely happens. That said, are Disk Brakes the ultimate end all for a fair weather rider such as myself. Are Clamp style breaks on the outs.?? Is it worth the increase in cost on the Scott mentioned above.??
Disk brakes offer nothing and you should know that.
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Old 08-20-18, 09:31 PM
  #136  
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Originally Posted by Jbarcs View Post
I'm not interested in a huge debate... just trying to advise the OP based on my experience. My rationale for my comments regarding the future was based largely on my experience searching for a canti bossed cx frame to build up for my son. Not an easy task anymore. How many folks are making canti cx or gravel or adventure bikes in 2018? No need arguing about the effectiveness or likability of one vs. the other. It's just happening whether we like it or not.
You can run, but you cannot hide. Just try and find a manual shift or drum brake car these days.
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Old 08-21-18, 12:19 AM
  #137  
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I built a wheelset for a bike in the late '70's from a set of Schwinn "s7" rims spoked to a Suntour 12 speed hubset, I used the Weinmann calipers that were on it with no trouble. I also, in the last few years built a "commute" bike based off a Trek 4300 w/cantilever brakes, I run 26 by 2.125 wheels.
I am not understanding where the idea that rim brakes cannot do larger than 28 tires, as both of these exceed that size quite a bit, and I know of others running similar sizes.
Was there something I missed?

Last edited by leftover; 08-21-18 at 10:25 AM. Reason: sheesh typos
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Old 08-21-18, 04:36 AM
  #138  
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Originally Posted by leftover View Post
I am not understanding where the idea that rim brakes cannot do larger than 28 tires, as both of these excede that size quite a bit, and I know of others running similar sizes.
Was there something I missed?
People have not all figured out how to undo the quick release on their brakes and are trying to jam a fully inflated tire between pads which are a millimeter off the rim.
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Old 08-21-18, 07:09 AM
  #139  
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Originally Posted by cyclintom View Post
Disk brakes offer nothing and you should know that.
OP here.

I don't understand your post. Can you clarify please.??
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Old 08-21-18, 07:23 AM
  #140  
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Originally Posted by KraneXL View Post
You can run, but you cannot hide. Just try and find a manual shift or drum brake car these days.
OP here ... People are using the automobile to make their point and I am saying, a bike is not an auto. IF a car had rim brakes, it would be a safe car. It would stop. After reading all the replies here I am confident rim brakes will stop my bike.

BTW, I got my drivers license driving a Subaru with a standard shift. There's no problem having a standard shift bike. All bikes come standard with a manual shift. Well, other than those E-Shift bikes.

So, let's not bring the automobile into a thread discussing bikes. It's off topic.
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Old 08-21-18, 07:34 AM
  #141  
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Originally Posted by KraneXL View Post
You can run, but you cannot hide. Just try and find a manual shift or drum brake car these days.
Base Kia Rio has both.

Go pretty much anywhere that isn't America or Canada (maybe Mexico too, never been there, can't say), and try to rent an auto tranny. I'm not waiting for it to happen, youre pretty much limited to an expensive luxury option or more likely nothing at all.

As far as drums, they are still extensively used on heavy trucks and in the rear on economy cars.

Ie, both are used where the market demands it and where they are the economical/technical choice
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Old 08-21-18, 09:05 AM
  #142  
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LOL, I just remembered my 2004 Civic has drum brakes in the rear ... and a 5-speed stick.

But hey ... they don't use rim brakes on helicopters, so that proves .... well ....

Originally Posted by cyclintom View Post
Disk brakes offer nothing and you should know that.
Disc brakes offer nothing, it is true. I have discs on the front of my Honda and on two bikes and on all four wheels of two Toyotas ... and never in my life have any of those brake discs offered me a thing. Not even on my birthday or during the winter holidays.

On another hand, the rest of my bikes have rim brakes ... not even a card on my birthday. What a bunch of selfish ingrates.
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Old 08-21-18, 09:17 AM
  #143  
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In pertinent summary:
  • Disc brakes can be better than rim brakes-- but the bottom-of-the-line Shimano mechanicals offer no real advantage over a typical rim brake
  • Disc brakes may indeed by "the future," but that doesn't equate to rim brake obsolescence. You can still buy 6-speed freewheels and friction shifters.
  • The disc model of the Speedster weighs nearly 2lbs more, and costs ~$150 more than the rim brake version. That's a double-dealbreaker.
I didn't see this thread as a rim vs. disc debate, though I knew that's where it would go. Viewed in strict context-- looking at the components fitted to the disc and non-disc Speedster, the rim brake model is a better buy.
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Old 08-21-18, 09:45 AM
  #144  
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Even bikes at Walmart now have disc brakes. They are here now, learn to change.
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Old 08-21-18, 10:14 AM
  #145  
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Originally Posted by zze86 View Post
I can't wait to hear the discussion once carbon rotors for bikes becomes in vogue.
With the Infinite budget of Formula One racing motor cars , it's already a thing..
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Old 08-21-18, 10:32 AM
  #146  
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Originally Posted by DrIsotope View Post
In pertinent summary:
  • Disc brakes can be better than rim brakes-- but the bottom-of-the-line Shimano mechanicals offer no real advantage over a typical rim brake
  • Disc brakes may indeed by "the future," but that doesn't equate to rim brake obsolescence. You can still buy 6-speed freewheels and friction shifters.
  • The disc model of the Speedster weighs nearly 2lbs more, and costs ~$150 more than the rim brake version. That's a double-dealbreaker.
I didn't see this thread as a rim vs. disc debate, though I knew that's where it would go. Viewed in strict context-- looking at the components fitted to the disc and non-disc Speedster, the rim brake model is a better buy.
Exactly - arguing about the merits of hydraulic disc brakes is irrelevant to this discussion. Given the bikes the OP is considering, rim brakes are cheaper, lighter and as effective. End of story.
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Old 08-21-18, 02:43 PM
  #147  
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Originally Posted by Maelochs View Post
LOL, I just remembered my 2004 Civic has drum brakes in the rear ... and a 5-speed stick.

But hey ... they don't use rim brakes on helicopters, so that proves .... well ....

Disc brakes offer nothing, it is true. I have discs on the front of my Honda and on two bikes and on all four wheels of two Toyotas ... and never in my life have any of those brake discs offered me a thing. Not even on my birthday or during the winter holidays.

On another hand, the rest of my bikes have rim brakes ... not even a card on my birthday. What a bunch of selfish ingrates.
You must work for the media. They too have either lied openly about anything or misrepresented its meaning because that is what socialists do.
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Old 08-21-18, 03:50 PM
  #148  
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my bike has:

disc brakes, tubeless tires, thru axles, and di2 shifting-oh the horror! this must give you old heads DBDS (disc brake derangement syndrome)

disc brakes allow for more tire clearance? don't wear out rims from friction? better modulation? quieter, especially with carbon rims?

rim brakes work fine and I have them on the front of my vintage frame fixie.

get the bike you like and want to ride, even if it. has 3 wheels.
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Old 08-21-18, 04:16 PM
  #149  
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Originally Posted by cyclintom View Post
You must work for the media. They too have either lied openly about anything or misrepresented its meaning because that is what socialists do.
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Old 08-21-18, 04:41 PM
  #150  
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Originally Posted by Jbarcs View Post
...

Most bikes with rim brakes (calipers) will let you ride up to a 28mm tire most of the time. But what if the next ride would be better done with 32 or 35 or even 40 mm tires? ...
I just went to see what tires I could fit on my road bike. I'm comfortable riding 28c road tires on fine gravel but Cycle Oregon is offering one of its gravel options this year where the stones are 1 to 2". It looked like I could get a 38c Pasela on the front. Fully expecting to have to deflate the tire, I went for it. Throwing the caliper release off was not quite enough. But popping the Tektro (Cane Creek? - I forget which this bike has) lever release and I had clearances to spare. Lots. And this on on pretty skinny rims, ~20 mm outside width. I suspect a 45c would go in inflated. The calipers are simply Shimano Ultergra? 105?. I picked them up used and never learned the model.

Now I do have a feature that helps clearance although that was never considered when I did it. My levers are road V-brake. Less leverage, more cable travel so they sit further off the rim. (V-brake levers to get the bigger, more comfortable hoods and drop the power for more predictable braking on mountain descents. I love e'm.)

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