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I verified this
And eight and a half years ago you said
Mark my words - this will come to pass as standard stuff...Keep an eye on pro time trial rigs and tri bikes over the next few years... probably sooner
How's that going? 1×12 is found anywhere there isn't a mountain to climb (and in some places where there is), half-step 3×10 is found only in the dustbin of history 😉
gbj_tester-
I'm pretty sure they'll have to come up with a different way to milk us for cash than just adding another cog... That's been getting silly lately.
But as you say, given the aero penalty of an FD, I guess the next compatibility breaking drivetrain change to chase marginal gains and force upgrades is way more likely to be a reduction in chain pitch...
Kimmo
TT is the market I envision driving eventual adoption of my idea. But the whole concept is predicated on being electronically shifted, where hopefully the bother disappears altogether.
It could be two separate shifting modes where if it doesn't half step it just minimises front shifts, or long-press to skip the half-step or vice versa.
Because there's only 2t difference in the big rings, it should be possible to make shifts between them almost as smooth as rear shifts, in two ways. First, since they're almost the same size they can be right next to each other, like cassette cogs. I verified this by putting all these rings on a crank with the aid of a 130/110 38t. Second, the 2t gap means it lines up every 180 degrees. With a bit of CAD shift magic, and perhaps a crank position sensor to time the shifts, I bet they could be super snappy and efficient.
The TT folks would love it, I bet. And surely the roadies could see the benefit when it comes to taking a pull on the front of a pack.