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The next two biggest gears are about a 4-5W deficit to a 2x system. Note that this is all at 250W, and riders operating at lower power would see less of a differential. … In many gears, the 1x system is within 2 watts of the 2x system, so you would be unlikely to notice the difference. In the top 3-4 gears, the 1x system is at a bit more of a disadvantage to the 2x. …

Expanding on the comment by @DanielHicks, given the symptoms described, it sounds like you are talking about the shifting at the rear of the bike. Chances are that your rear derailer needs adjustment. …

That's how their system indexes the gears. … If you mounted a 10s or 9s Campagnolo cassette on a Shimano system of the same number of speeds, you might be able to adjust the gears to shift acceptably, although it would be a lot more prone to coming …

The chainline for the GRX groups is very slightly wider than Shimano's standard road groups. This means that the midpoint between a set of double chainrings is 2.5mm further outwards on the GRX groups …

In contrast to Nathan, I would argue for a 50/34 crankset, usually called a compact crankset. This helps ensure that you have an easy enough gear. I would argue that objectively, amateur riders should …

With 1x drivetrains, you will trade off larger jumps between gears and potentially gearing at the high end. … Having too large jumps between gears when you are trying to hold a group ride's pace can be annoying. …

I will expand a bit on some of the points made. Creaking happens when something fits loosely on the bike. Cannondale has had an unfortunate reputation for having their press fit bottom brackets creak. …

It’s not just that the 12s chain is narrower than your chainrings were designed for. The AXS chains (but not SRAM’s Eagle MTB chains) use a larger roller diameter as well. I’ve heard some people repor …

The Classified rear hub was released in mid to late 2020, i.e. 3 years after the question was asked. It is a 2-speed gearbox, and it mounts a proprietary 11s cassette. It is oriented towards performan …

I still feel that variable gears are only for people over 45. Isn’t it better to triumph by the strength of your muscles than by the artifice of a derailleur? We are getting soft. Come on fellows. …

On Shimano Ultegra and DA-level cassettes, the biggest 3 cogs come pinned together with an integrated spacer for the smallest of the 3 cogs. The next 2 cogs are pinned, also with an integrated spacer …

Almost all derailleurs are pulled by cables. To be able to operate one derailleur from either of two shifters, or one brake from two levers, you'll need some mechanism to split the cable. As always, …

Expanding on a comment I made on Gregory's answer: I agree fully that it's better not to shift under load. However, modern drivetrains are much less sensitive to shifts under load than older ones. You …

I don't have Campagnolo's specifications in front of me, but I suspect they will say that this combination is not compatible. (NB: see comments, I may be wrong.) However, I used to have a Record 10s r …

It is possible that the cartridge bearings simply need a short time to break in. For cartridge bearings, I think this is mainly the grease getting distributed evenly throughout the bearing and on the …