This design is unstable and expensive to produce with a complicated in wheel transmission. It is novel, but almost certainly more expensive and less reliable than existing designs.
In wheel gears have been in use for over a century very successfully. I had a Raleigh bicycle with Sturmey Archer gears as a child. It never gave me any trouble, unlike the derailleur gears I had on later bicycles.
> In wheel gears have been in use for over a century very successfully.
They've been barely viable the whole time. Sturmey Archer are the last maker in business; they went bankrupt a couple of decades back and for some years there was serious concern that manufacturing would never resume.
...what? There's a whole bunch of manufacturers, so many that there's an entire Wikipedia page disccusinge them at https://en.wikipedia.org/wiki/Comparison_of_hub_gears. There's at least 8 different manufacturers on there, some with many different models. Some were introduced as recently as 2023, so it's hardly some abandoned legacy technology.
It's true that internally geared bikes are common, especially in Europe. But internal gear hubs that are coaxial with pedals are almost unheard of. The only production one ever is the Schlumpf Unicycle hub, which costs $1500 and only a few hundred have ever been made. It also has only 2 gears. It's certainly possible to do, but I have doubts about a company opting for that incredibly expensive option of creating a new hub instead of reusing standard bike parts.
You've not come across hub gears on bikes before, have you? They were pretty much the standard before derailleur gears became popular, and modern ones can have up to 7 speeds.
I’ve ended up with some electronic road SRAM which is seriously quick in comparison (except for the slow rider), but do miss the smooth internal hub and the stationary gear changes.
Oh, nice, the state of the art has advanced since I last read about hub gears, which was ... oh dear, about twenty years ago? No wonder things have improved :)
