I must not get it on the new stuff rant.
#28
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to the OP. Threaded BBs are awesome for maintenance, 25mm gatorskins are one of the best general riding tires on the market becuase of their decent rolling resistance and amazing puncture resistance,I have external cables on my road bike and internal for my cross bike (really wish it was the other way around, again for maintenance), tubeless 33mm tires are amazing if you do anything off road, and finally I'll take the disc brakes on my cross bike over any other rim brake because of their modulation and power in **** weather conditions. There's a reason why some of these "trends" exist
#29
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#30
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I might be wrong, but I think people who rant against new stuff probably aren't going to be buying new stuff regardless.
I am a car mechanic and I used to work on drum brakes and install points in distrbutors. Now I work on supercharged Corvettes and electric cars with 30 computers on board.
Actually, my newest bike is from 2010, might be time to update.
I am a car mechanic and I used to work on drum brakes and install points in distrbutors. Now I work on supercharged Corvettes and electric cars with 30 computers on board.
Actually, my newest bike is from 2010, might be time to update.
#31
My local bike shop has sold a few road bikes with disc brakes, but sells far more higher end bikes with caliper brakes.
#32
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That's pretty much what I hear from the shops I visit as well. One sells mostly high end bikes in huge volumes and they said the market for road bikes (not endurance or gravel) with discs is really small.
#33
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I the OP and I am not against new if it is better. I love indexed brifters and would never go back to friction shifting. I also like internal cables but they need to find a way to make it easier. In other words some access to the process even though I can change mine fine it just takes longer. I would go electronic shifting but right now more than I want to pay.
Make a non-thread BB that will be more reliable.
Make a non-thread BB that will be more reliable.
#37
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It's time for this forum to be split into two sub-forums: "Classic Road Cycling" and "Modern Road Cycling"
#38
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The fact that you have to glue a piece of metal in a carbon frame just to hold the bearings in place. If you don't like PF cups, 2 piece bottom brackets that thread the cups into each other rather than the carbon frame make more sense in many ways than trying to put threads on the carbon frame itself. Threaded BB shells are a holdover from cup and cone BBs. They continue to be a good solution on metal frames. That is less so for carbon frames which can not be threaded and require a metal sleeve.
If you really want to, you can spend $30 on a BB30/PF30 on a glue-in BSA adapter. There is no one stopping you from doing this. You can have any BB30/PF30 frame on the market converted to BSA with a metal insert glued in if that's what you really want. But people don't really want this. They just want to complain about PF creaks.
If you really want to, you can spend $30 on a BB30/PF30 on a glue-in BSA adapter. There is no one stopping you from doing this. You can have any BB30/PF30 frame on the market converted to BSA with a metal insert glued in if that's what you really want. But people don't really want this. They just want to complain about PF creaks.
#39
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Disc brakes are obviously the most divisive thing to come along in some time, although the 50+ forum has some arguments about clipless pedals.
There are actually a few road bikes with discs in my club and the people seem to like them. Have not tried them on a road bike yet, but I'm disc curious.
#40
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I understand a lot of it. Classic steel bikes are awesome, threaded BB's are awesome, caliper brakes are awesome (no disc on road bikes for me), but that doesn't mean pressfit BB's on carbon bikes are the devil.
#41
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That being said, cartridge bottom bracket bearings are press fit somewhere. It's not the press fit that's inherently bad. Threading is the result of needing adjustability on 3 piece bottom brackets. Ashtabula cranks use press fit bearing cups because the threads are on the crank. Most of the frames with an aluminum sleeve are BB30, which was designed from the ground up for cartridge bearings. An engineer would look at you funny if you said you wanted to press cartridge bearings into a cup to thread into a sleeve that you glued into a fitting. Press fit is perfectly logical, albeit often poorly executed.
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The first and obvious answer, because people will buy it.
However, that answer begs the question, "why will people buy it?" The answer is simple, no bicycle is perfect.
People will cast about in that search for perfection, or at least a closer approximation.
However, that answer begs the question, "why will people buy it?" The answer is simple, no bicycle is perfect.
People will cast about in that search for perfection, or at least a closer approximation.
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Which means the problem with press fit isn't an inherent problem of press fit. It's a problem of poorly made frames. And makers of cheap poorly made frames chose a poorly made press fit over a poorly made threaded BB. And even if they did use a poorly made threaded BB shell, it there's no guarantee it would be faced and chased properly, which is especially important with external cup BBs.
#46
Vain, But Lacking Talent
For the record, the last two times My Domane had an awful creak under load, it turned out to be a "loose" rear skewer.
#47
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Which means the problem with press fit isn't an inherent problem of press fit. It's a problem of poorly made frames. And makers of cheap poorly made frames chose a poorly made press fit over a poorly made threaded BB. And even if they did use a poorly made threaded BB shell, it there's no guarantee it would be faced and chased properly, which is especially important with external cup BBs.
#49
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"Much higher" is vague and subjective, and lends itself to false comparisons. Yes, it's "much higher" to do it right than doing it wrong, but that doesn't mean it's anywhere near unobtanium. It really should not cost much more to make a functional non-threaded BB over a threaded BB. Threaded is just a bit more forgiving, and it's very tempting for corporate penny pinchers to make an inferior BB shell at a fraction of the cost of a threaded BB. The range in cost and performance from best to worst is wider for non-threaded than threaded.
Cheap threaded frames can in fact have problems with external cup BBs, which is why many frames need to be faced, and that is the system you'd expect to find on a carbon frame. For modern cranks, facing should be close to perfect on either system. There's no problem with older 3-piece type cranks, but those aren't being used on frames where press fits are being considered.
Cheap threaded frames can in fact have problems with external cup BBs, which is why many frames need to be faced, and that is the system you'd expect to find on a carbon frame. For modern cranks, facing should be close to perfect on either system. There's no problem with older 3-piece type cranks, but those aren't being used on frames where press fits are being considered.
#50
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"Much higher" is vague and subjective, and lends itself to false comparisons. Yes, it's "much higher" to do it right than doing it wrong, but that doesn't mean it's anywhere near unobtanium. It really should not cost much more to make a functional non-threaded BB over a threaded BB. Threaded is just a bit more forgiving, and it's very tempting for corporate penny pinchers to make an inferior BB shell at a fraction of the cost of a threaded BB. The range in cost and performance from best to worst is wider for non-threaded than threaded.
Look on Google and this website for thread after thread on pressfit creaks.
I'm not saying that threaded BBs are problem free, but they're a lot more reliable IMHO.