"Here's where some of the extreme weight cutting is hidden from view. Inside are just two (2) pawls with a 40-tooth ring. So, just 40 points of engagement for a generous 11º of rotation. Which is just one of the reasons these hubs are meant exclusively for road bikes, and only for drivetrains with a maximum 1:1 easy gear combo."
"This makes them easier to build and service, and, for Tune's part, probably much easier to manufacture, but they do use carbon fiber end caps. Another big change is the absence of shims used to adjust axial (lateral along the axle) play. This new axle design and a lot of fine design work means they're also stiff and durable, something Tune said was a priority over just making the lightest possible hubs and why they come with a 10-year warranty."
Yokto hubset weighs 226g for the set in the lightest configuration with an XDR freehub, over 20g lighter than the lightest Prince/Princess combo. The hubs use just two pawls and a 40-tooth engagement ring, providing 40 engagement points and approximately 11° of rotation, which targets road-bike use and drivetrains limited to a 1:1 easy gear ratio. The design removes the Princess front hub's spoke-through shell and carbon support ring, simplifying builds and service while retaining carbon fiber end caps. A new axle eliminates shims, improving stiffness and durability, and the hubs carry a 10-year warranty.
Read at Bikerumor
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