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you know, on bikes.
 

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Adorable Furry Hombre
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No, and hopefully pressfit will go the way of the DoDo soon.
 

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Talk about fixing a problem that didn't exist.
I don't think they were trying to fix any problem, I think they were finding ways to eliminate parts, vendors, manual operations, to make their product less expensive to manufacture. TBH I think it increases their complexity a bit, but cost less money even with it.
 

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I don't think they were trying to fix any problem, I think they were finding ways to eliminate parts, vendors, manual operations, to make their product less expensive to manufacture. TBH I think it increases their complexity a bit, but cost less money even with it.
They weren't trying to fix a problem. Nor were they trying to eliminate parts or reduce costs. The purpose of the BB30 was to reduce weight and increase stiffness. Which it does.
BB30 with a 30mm cannondale crank is a pretty good design. The problem arises with all the adapters and such to make it work with other cranks.

From Cannondale website.
Prior to 2000, bottom brackets almost universally consisted of a small diameter steel spindle, which was supported by ball bearings in cups which threaded into the bottom bracket shell of the frame (where the downtube, seat tube and chainstays join). The design was heavy and flexy, and the small size of the BB shell limited the size of other frame tubes which connect to it, which wasn’t a problem back in the days of steel frames but was a big limitation in the era of aluminum and carbon.

Cannondale’s solution was to make everything bigger. BB30 features an oversized 30mm aluminum BB spindle with a unique, stress-reducing wave-taper crank interface, running on oversized bearings inside of an oversized bottom bracket shell. Because of the larger diameters, we could use aluminum for the spindle to save weight, while also greatly increasing the spindle’s resistance to twisting, which improves efficiency. The bigger BB shell allowed for bigger diameter frame tubes for stiffness, and having the bearings press directly in to the frame eliminates the weight of the cups.
 

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BB30 is fine, but it does require very exacting tolerances in order to work. So in mass produced frames I'd be wary, but say on my Time NXS it has been flawless. I also run Hawk Racing BB30 bearings which are incredible.
 

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They weren't trying to fix a problem. Nor were they trying to eliminate parts or reduce costs. The purpose of the BB30 was to reduce weight and increase stiffness. Which it does.
BB30 with a 30mm cannondale crank is a pretty good design. The problem arises with all the adapters and such to make it work with other cranks.

From Cannondale website.
While it does those things in theory (and you could say the problem they were trying to fix was finding something new to market), it also reduces the time needed to manufacture the frame, so it reduces cost. There's no need to thread or make everything nice and square or even a consistent diameter with a PF BB. There's a good CyclingTips podcast about this.

Personally, I prefer threaded BBs. I can't tell a difference when riding, and I doubt anybody else can either. I have a few bikes now with PF BBs that are fine, but my old Crockett had a different ID on each side (off by about 1mm), making it quite difficult to work with. There's a more recent, larger threaded T47 option, but that's just one more "standard".
 

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BSA all the way. the small frame makers have the goods. really unfair for the bike makers to impose press fit standard on us who don't have justification for buying all the specialty tools to work with them! And no rider ever requested this BB30 PF30 feature I bet, unlike disc brakes. (OK I admit I did like the pressfit bearings in my Klein, 27 years ago)
 

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Adorable Furry Hombre
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BSA all the way. the small frame makers have the goods. really unfair for the bike makers to impose press fit standard on us who don't have justification for buying all the specialty tools to work with them! And no rider ever requested this BB30 PF30 feature I bet, unlike disc brakes. (OK I admit I did like the pressfit bearings in my Klein, 27 years ago)

When I did my custom Seven, BB30 was a new thing...LBS asked if I was sure I wanted Ye Olde BSA...Seven too asked "are you sure?". Latest and greatest are not always the same, I guessed at the time.
 

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One problem with BB30 (introduced by Cannondale 17 years ago in 2000), is that Shimano, TruVativ (GXP), Campagnolo and others (sensibly IMO), never bought into the idea, with the result now that we have a situation where the vast majority of frames on the market, are not designed around the cranksets and we have a variety of kludges used to make things work together.
 
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