Quote:
Originally Posted by thermalattorney
Shimano is a spiteful company, so it could shape up that way, but it's not clear from the patent.
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Would somewhat agree, but in the patent drawing from the article it clearly shows an MTB. The article even mentions it. The adoption of the UDH from MTB makers has been crazy quick, and Shimano ceded the market share battle a long time ago. So wouldn't be surprised if the patent drawing was for use with the UDH, or maybe even some version of the hanger/direct mount that can also fit in the dimension standards of the UDH
Quote:
Originally Posted by MikeD
Wonder if you'll need a whole new frame if you fall on the derailleur side rather than just replace a sacrificial bolt on derailleur hanger?
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That's definitely a concern many had from comments in the previous post from the SRAM AXS Transmission release. However I posted some info showing how tough the connection is, and honestly it looks like anything that would hurt the frame in a UDH direct mount system would also damage the frame with a regular hanger.
https://youtu.be/i3QzPxdN1e4?t=1008
If anything it might save some frame damage from a "stick in the spokes/chain/RD" situation, as the connection of the RD to the frame looks strong enough to induce a rear wheel skid instead of the RD snapping off and the stuck stick spinning around to break the seatstay.
Quote:
Originally Posted by oldpotatoe
Isn’t sram doing the same thing?
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Kind of. The UDH is "proprietary" in the way centerlock rotors are proprietary. With a rear dropout designed for UDH, you can use any normal RD with the UDH hanger. However, if you want to use a "direct mount" RD you need the right dropout. Kind of like how you can use 6 bolt rotors on centerlock with an adapter, but not the other way around.