UDH - Standard or Scam?

Send me your shipping details and I’ll get one to you.

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The other options is to 3d print one from their supplied cad models on the UDH website.

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I did and there’s high tolerant on the printed model (±0,2-0,4mm), that makes me decide to use actual hanger. Anyway, just send you a DM

Thank you, Sean!

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Just seen this BTR post about their new steel UDH dropout. I reckon Berf nailed it. One of those designs that coulda looked a little clunky as an individual piece but looks great welding into the frame. Especially like the way the angle on the NDS is picked up by the post mounts.

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I love starting out and trying to learn everything needed to build proper frames but trying to read and understand everything in this thread is making my head hurt. Still, amazing to have all of this information available. Thanks everyone.

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Reading through this has been super informative. Thanks to everyone who has contributed!

I thought that it might be best to ask here so that someone else could benefit as well. A question to @mark_pmw or @Coco_PMW. I am somewhat confused about the tooling needed to build a frame with a set of UDH dropouts. For example, to build a Boost-sized rear end.

  1. Can a regular Boost dummy axle be used with UDH/T-Type Adapter for Dummy Axle Spacer (FT1173)
  2. Is the purpose of a dedicated UDH/Boost indexed dummy axle FT1143 and UDH adapter FT1162 to allow for precise indexing (as the name suggest) or is there more to it?
  3. Lastly, are different tools or dummy axles needed to build a rear end with Steel SRAM UDH/T-Type Round, Rear Dropout, Eccentric and with a set of UDH-compatible slider dropouts?

Thanks for your time, and apologise if the questions are silly or self-explanatory.

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Questions are never silly! Let me see if I can help:

  1. If you are going to use the FT1173, you’ll need a spacer [FT1124] (FT1124: Dummy Axle, Rear, T/A, 148 x 12 mm Spacer)

  2. The FT1143 with the FT1162 works best with our SRAM UDH/T-Type Flat Post Mount Dropout like the DR0103

  3. If you are using our conventional sliding dropouts, like the DS0001, you can use the FT1165 or look above to my first point.

  4. If you are using DR2073, then you can use the points above #1 or #3

I think I might need to do an Instagram post on this :slight_smile:

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Splendid! Massive thanks!

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You can use a regular dummy axle if you pair it with an all-metal hanger. If you use the standard Sram hanger it may melt. Don’t ask me how I know :melting_face:

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All aluminum? That’s pretty cool!

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North Shore Billet makes them as well.

Hey @manzanitacycles, do you also find that the 8mm hex interface for the Wheels MFG hanger bolt has a poor fitment? We bought a couple for fit testing at work and the poor tool interface fit resulted in some nasty indentations when tightening it to the prescribed 20Nm.

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I’ve only used the hanger as a dummy for fabrication. I’m just snugging up the bolt so I can’t say how it goes at full torque.

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Powerful information, as always! Thanks I was actually under the assumption that most if not all UDH hangers are aluminium. Need to do some shopping over NSB then.

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SRAM’s own hangers are made from aluminium, but parts of it is over-moulded with plastic.

Basically the bits that are in contact with the frame, plus the chain catcher fin, have a plastic outer layer. You can see the flash line in the attached photo.

udh

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Every day is a school day, and so on!

Burgtec also offers an aluminium version of the UDH. However, I am unable to tell based on the photos and product description if it’s fully aluminium or shares a similar construction with Sram offerings.

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I’ve heard this from one of my customers. He’d opted for a more premium option only to find it a bit disappointing I think.

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NSB and Burgtec are all alu and solid to mount up with a nice thick hanger element. I found the 8mm broach on 2 separate wheels to be extremely loose…rounding out a real risk if tightening more than a couple of times…

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New option

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Not disagreeing with your comment . . . people have been saying similar things about Shimano for decades.

Hello guys, maybe someone has/knows/seen a possibility to mount sram transmssion on old intence frames with g1-type dropouts? I have an intense carbine and want to mount transmission on it, on oldschool 26 wheels. But I stuck if it possible at all. Can someone point me on (probably) existing similar investigations?