C36 wrote: ↑
Thu Apr 05, 2018 6:46 pm
You are playing dumb here, we talk on relative not absolute. disc brakes compared with rim brakes have disadvantages on the flat, on the way up and only represent benefits (over rim brakes, in case you got lost) certain conditions on the way down (need high-deceleration or long technical descents or some bad weather conditions).
No I won't take rim brakes all the time, I don't recall making this claim: few messages above a couple was looking for a bike that will give them more confidence in descents, not for performance but for confort and safety.
First off, learn how to quote properly so your posts are readable
Rim brakes compared to no brakes have the same disadvantages, it's all relative not absolute, ask a fixie rider
I've been riding discs for over a year and a half and 10k miles of group rides, solo, climbing and lots of fast aggressive descending, so lets have a look at the reality
of these disadvantages:
Maintenance: Have not had to do anything besides changing brake pads (which is easier than changing rim brake pads) and the same kind of occasional cleaning with a q-tip I had to do with rim brakes. Haven't had to do a bleed but I've done it before on my MTB and it is no more difficult than changing brake cables (which on my old TCR I had to do several times a year cause it would eat housings). If you can't do a brake bleed, you're incapable of a brake cable change either. It is a little trickier to get the brakes centered perfectly because of the tight tolerances, but certainly not a deal breaker. - 404 Disadvantage Not Found
Weight: sure, it adds a little weight, my TCR is about 400g heavier than my friends nearly identical rim brake TCR. Despite this I've beat nearly every climbing PR I did on rim brakes. And show me where someone has lost a race because of 400g and disc brake bikes have already been built to below the race minimum weight... - 404 Disadvantage Not Found
Aero: You can claim the aero disadvantage based on wind tunnel tests all you want but we don't ride in a wind tunnel, you are constantly changing direction, riding in groups, etc.. Your body posisition is the biggest factor here. But even with this miniscule aero disadvantage you are so worried about it hasn't caused me to get dropped from group rides or stopped me from taking pulls at the front and even riding folks off my wheel. - 404 Disadvantage Not Found
Wheel changes: I can swap between wheels with no issues, no rub, it's super easy and way better than when I had to swap rim brake wheels that require pad changes and brake adjustments. I know some people have had disc alignment issues but they make spacers to adjust that. As far as changing flats, front wheel is easier, no lawyer tabs to deal with, back wheel is a little trickier, but not a big deal and since I am not pro racing it doesn't matter. If you get a flat as an amatuer racer, you're pretty much done anyway - very slight disadvantage found
Noise: I have had an occasional squeal here and there, but had the same issue with rim brakes. Fixable on both - 404 Disadvantage Not Found
Handling: Can't tell any difference - 404 Disadvantage Not Found
Like many naysayers, you greatly exaggerate these "disadvantages"
Is this for real? Did you just say "well yes disc brakes frames may have worse dynamic properties than their equivalent rim brakes, but unless you compare you won't see the difference then who cares".
"Bikes are never the same" well read again what I mentioned the bikes compared were the same and when two engineers from two brands tell you "the disc brake frame is not as reactive as the rim brake" I think it is clear.
"This is not the main point" well the same bike with different brake system behave differently is kind of the main point at the moment of picking a bike that will spend 99% of the time doing something else than braking.
Now I get your point, pick the first bike you see and go have fun don't think more since you don't care how different bikes behave.
I will give you the benifit of the doubt but please post these comments from the engineers...
And how much difference is this behavior and how is it actually a disadvantage? How will it ruin your experience?
I can use the same argument you make above that it only matters when you are ripping around corners under certain conditions and you will be spending 99% of your time doing something else other than cornering under these conditions
It is called optimisation, just more than 100 years than Engineers try to make bikes faster.
Wait, are they trying to make bikes faster and better or just trying to sell you stuff? Can't have it both ways.
And BTW, average speeds at the major bike races haven't really increased much over the past 30 years, and most of it can be attributed to doping and training methods not bike technology.
Do you have a road bike rather or a touring bike? Do you have 25-28 tires or 32-38? Why have you made some choices that bring more performance and suddenly for a less reactive frame and heavier, less aero setup it suddenly doesn't matter?
I used to think I needed to buy based on performance reasons, but have since learned that it really makes little difference, you are either strong or your not (or you are trying to get strong). I've seen guys on $1500 touring bikes smoke guys on $15k race bikes, it's not the bike. The vast majority of cyclists aren't riding super expensive lightweight/aero machines and it is not stopping any of them from going out on group rides and keeping right up or doing whatever kind of riding they enjoy
I've posted about it before, but there is a guy in LA that gives many a strong rider up the climbs a hard time on his box store Raleigh crusier that probably weighs over 30lbs, there is even video of him chaising down the 2-time winner of the Velo Le Mans 24hr race up a climb. Disadvantages from disc brakes my ass
https://pvcycling.files.wordpress.com/2 ... _ketih.jpg
I get that it is fun to measurebate all the specs and such, but stop acting like any of this stuff really matters in the long run, we're all out to just have fun on our bikes.