How will you get somewhat additional shift precision out of the derailleur in your UDH-equipped bike? Perhaps attempt a full-alloy Robert Axle Undertaking UDH alternative hanger vs. the unique aluminum and plastic providing from SRAM.
It’s probably not thicker, it’s not lighter, and it prices twice as a lot. However it guarantees to be a stiffer, extra exact connection between your derailleur, body, and thru-axle for improved shift efficiency.
Why Robert Axle Undertaking machined an alloy UDH alternative?
Do you know that the usual SRAM Common Derailleur Hanger was half plastic? A co-molded plastic sleeve, plastic chain ramp, and plastic threads interface with the dropout of your body. With a flat aluminum hanger sandwiched in between, which your derailleur really hangs off. Then, and aluminum bolt squeezes all of it collectively and serves because the 12×1.0mm thread that your thru-axle secures to.
We knew. Tyler broke it down in our What’s up with the SRM UDH? Bikerumor Podcast a couple of 12 months and a half in the past.
However frankly, I forgot. The UDH design is genuinely easier and has successfully been trouble-free for me on each gravel and mountain bike I’ve ridden with one in the previous few years. So, regardless that it was developed to make hanger alternative simpler (nicely, and to sneak in direct mount derailleur transmissions), I haven’t but wanted to switch a UDH.
However the Robert Axle Undertaking additionally knew. They usually got down to get rid of that plastic to enhance how precisely your bike shifts. “Fashionable drivetrains are exact and exacting and need to be mounted to a derailleur hanger of equally exact high quality. The Robert Axle Undertaking Common Derailleur Hanger is made to the very same geometry because the inventory SRAM hanger guaranteeing an ideal match to your bike and any drivetrain you’d prefer to mount to it.“
Robert Axle UDH Substitute – Tech, Pricing & Compatibility
The Robert Axle UDH alternative hanger is CNC-machined in a single piece from 6061 aluminum. That does primarily imply the alloy half is thicker in some locations (not the place your derailleur hangs, although). So possibly it’s much less prone to bending, too. Then, it will get an identical 6061 alloy retaining bolt with a 12×1.0mm thread pitch to safe the hanger to your thru-axle.
It sells for $32 and comes solely in anodized black. (For those who want some shiny shade, possibly attempt the costlier choice from Wheels Mfg.) However, whereas there’s only one Robert Axle Undertaking UDH, it should work with all UDH-ready frames, together with Trek Lively Braking Pivot body designs. And it’ll work with all typical derailleur drivetrains, together with ebikes.
Get one direct from Robert Axle or your native bike store now.
