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#Defined #Common #Derailleur #Hanger

Practically each bike that may shift gears has a small, unassuming half that goes unnoticed 99.9% of the time.

However within the uncommon moments when it turns into a problem, it may be an enormous headache that may undoubtedly finish a experience, and presumably even put a motorbike out of fee for days or even weeks.

A derailleur hanger is a small element that fastens rear derailleurs to a motorbike’s body. It’s a single level of contact crucial to creating a drivetrain work, because it holds the derailleur within the place required to hyperlink up with the cassette and chain.

If it breaks, your experience is over.

The Derailleur Hanger Drawback

For a very long time, this element has been difficult to take care of or change. It tends to bend when it takes hits, which immediately throws drivetrains out of whack. It could even snap utterly, a characteristic quite than a bug.

Universal derailleur hanger.
The Common Derailleur Hanger is an try to deliver uniformity to a tough element important to drivetrain mechanics; (picture/SRAM)

Derailleur hangers are supposed to interrupt away within the occasion of a major influence to save lots of the body and derailleur itself, each of which value way more to interchange.

When that occurs, riders don’t have any alternative however to select up a brand new derailleur hanger. Nonetheless, as a result of there hasn’t been a historic commonplace for this element, most riders discover themselves in a Cinderella predicament, attempting to find the glass slipper of a derailleur hanger to suit their bike.

As a result of practically each model has proprietary hangers that always differ from bike to bike, bike retailers not often hold them in inventory.

SRAM’s Common Derailleur Hanger

This subject grew to become significantly pronounced in the course of the pandemic when large shortages in bicycle componentry hit the market. A damaged derailleur hanger might imply a very long time out of the saddle.

The Universal Derailleur Hanger.
The Common Derailleur Hanger works with lots of of bikes; (picture/SRAM)

Nonetheless, in 2019, the oldsters at SRAM launched a doubtlessly game-changing element with the chance to make swapping out a derailleur hanger as straightforward as throwing on a brand new chain.

SRAM’s Common Derailleur Hanger, or UDH for brief, is an try to create a typical derailleur hanger suitable with any bike or derailleur.

SRAM designs the platform to work throughout builds and types and permits others to make use of and barely modify their design — offered it nonetheless meets the specs to suit.

“A motorbike model might wish to make their very own, barely completely different derailleur hanger with completely different options. That is OK,” mentioned SRAM.

“Nonetheless, with the intention to mark their frames with the UDH trademark, they have to conform to UDH body and hanger specs. This ensures that if a rider breaks their hanger, it might nonetheless get replaced with a typical UDH hanger.”

Common Derailleur Hanger Compatibility and Options

SRAM’s UDH shouldn’t be really “common” simply but. However a litany of bikemakers — that appear to have seen the worth in providing a typical, easy repair to an issue that has plagued shoppers for many years — have come on board.

The Universal Derailleur Hanger.
Options of the Common Derailleur Hanger embody a lip that retains the chain from dropping onto the body and the flexibility to rotate backward if it takes a giant hit; (picture/SRAM)

Manufacturers that equip bikes with the Common Derailleur Hanger embody the large guys like Trek, Large, and Specialised, together with different high-end producers throughout the globe, together with Canyon, Dice, Ibis, Merida, Orbea, Santa Cruz, Scott Sports activities, Transition, and lots of extra. Take a look at SRAM’s in depth checklist for a full listing of bikes prepared for the UDH.

SRAM places the variety of bikes suitable with the UDH within the lots of and says extra are becoming a member of each day.

SRAM’s design is not only a easy commonplace derailleur hanger. It additionally incorporates a number of cool options to assist mitigate a number of frequent, irritating issues each rider experiences.

First, the UDH has a lip that meets the bike’s body, stopping a sequence from dropping onto the body. As an alternative, it forces the chain again onto the cassette, avoiding these wince-inducing sounds of a sequence raking throughout a body.

Second, the UDH can rotate backward if it takes a giant hit. Which means it might take way more power than a conventional fastened hanger with out snapping off or sending a derailleur into the spokes of a rear wheel.

Why the UDH Issues

Compatibility is an issue within the biking world. Nearly numerous element choices, from cassettes and chains to shifters, backside brackets, and hubs, make constructing and sustaining bikes difficult even for seasoned cyclists. Creating commonplace parts is a straightforward approach to assist riders spend extra time on their bikes and fewer time mulling over spec sheets and measurements.

Related issues are occurring on this planet of hookless rims. Many producers are attempting to determine a commonplace that may enhance compatibility with a sometimes-temperamental product.

It’s solely been a handful of years because the UDH went stay. As extra manufacturers undertake it, it might remove a nagging drawback for cyclists.

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