Hambini Racing BBright Bottom Bracket SRAM DUB Crankset (Black)

(7 customer reviews)

£297.00 Ex. VAT

This bottom bracket is designed to interface a 29mm SRAM DUB Crankset with a bike frame that uses a BBRight Bottom Bracket (46mm Nominal Inside Diameter x 79mm wide). This type of Bottom Bracket is almost exclusively used on Cervelo and Factor bikes.

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SKU: BBright-DUB-Racing Edition (Black) Category:

Description

This bottom bracket is designed to interface a 29mm SRAM DUB Crankset with a bike frame that uses a BBRight Bottom Bracket (46mm Nominal Inside Diameter x 79mm wide). This type of Bottom Bracket is almost exclusively used on Cervelo and Factor bikes.

Hambini Racing Bottom Bracket Overview

  • 20% stiffer than Hambini Standard Bottom Brackets
  • As used in the Pro-Peloton
  • One Piece design aligns the bearings perfectly, reducing the likelihood of creak
  • NTN Bearings Ultra Low Friction Bearings fitted as standard in Road applications. Fully Sealed NTN/FAG Bearings fitted in MTB Applications
  • No Hammers are required to install or Remove the Bottom Bracket
  • Fully Serviceable, the bearings can be replaced quickly and easily
  • It is supplied with fitting adaptors in M12 (or 1/2 inch), a press or studbar will be required to facilitate installation
  • One year warranty on the bottom bracket body

Precision Engineered and Manufactured in the United Kingdom

Hambini Bottom Brackets are amongst the lowest friction bottom brackets in the world. They are used by recreational cyclists, road racers, triathletes and time trialists from around the globe. They are of proven design and are manufactured in the United Kingdom. These units are of a one piece construction which makes them inherently resistant to creak, they will maintain perfect bearing alignment and function under loads in excess of 4000W.

Hambini Bottom Bracket Reviewed by an Engineer

Hassle-Free Maintenance

All Hambini bottom brackets can be installed and removed with a conventional bearing press, they use a controlled method of installation using the recommended fitting adaptors, they require no hammers or specialized tooling for removal. Additionally, the wearing component – the bearings – can be serviced in situ or removed within just a few minutes. The bottom bracket has been designed to be fully rebuildable.

Unrivalled Performance

Unloaded bearing spin tests are a poor measure of frictional performance but they do highlight good bearing alignment. The link below is to a video of a Hambini Racing Bottom Bracket that had completed 10,000km

Class Leading Parasitic Drag Loss (Friction)

The graph below shows how Hambini bottom brackets perform in comparison to the bottom brackets of other manufacturers. The test conditions model real world cycling and more importantly mimics realistic frame tolerances. All of these tests have been conducted with an eccentricity of 0.1mm which is generally the maximum permitted in frame specifications – the reality is tolerances have been known to be much worse than this. Misalignment is more critical to friction than the type of bearing ball material, a slight misalignment can easily outweigh the difference between a top of the range NTN bearing and a mediocre ebay no name bearing. The results show that bottom brackets which have an element of structural linkage between the drive and non-drive sides (one piece/threaded etc) perform much better than those which are multi piece.

The high torque and low RPM of pedaling causes high Hertzian contact stresses on bearing surfaces which cause friction levels to change over time. Those bottom brackets which have used ceramic bearings, start off with fairly low levels of friction but over time their friction increases dramatically. The super hard ceramic balls grind a track into the comparatively soft bearing races causing friction to increase. This would be analogous to trying to drive a locomotive train on a road, the wheels would cut grooves into the road surface due to the huge difference in surface hardness.

Bottom Bracket Stiffness

A Hambini BB is a one piece bottom bracket. It actively contributes to the stiffness of the bike’s pedaling platform. Threaded and multi piece bottom brackets have an element of play in their design so they do not contribute anywhere near a comparative level of stiffness. Reviewers of Hambini BB’s often comment on their feeling of improved stiffness, this is due to them being one piece and undergoing a proprietary heat treatment process. This makes them stronger and stiffer. This is a difference the end user cannot see – but they can feel.

Support

A lot of support questions can be answered by visiting the support section.

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You can contact support on support@hambini.com or use the Contact Form

Additional information

Crankset Type

Frame

Manufacturer

7 reviews for Hambini Racing BBright Bottom Bracket SRAM DUB Crankset (Black)

  1. Grégory

    Installed on a brand new Cervelo S3 Disc. Bike mechanics are still amazed how smooth it is. Top of the range bottom bracket. Forget about other brands, period.

  2. Aleksandr Dorofeev

    Fits perfectly, solid, no squeaks and other issues. Masterpiece.

  3. Stewart

    Great service. Quick personal response to questions. Great product

  4. thomas.lecomte.tl

    Awesome product!
    But WHY it does not come with a Sticker, Hambini? 😀
    @thomaslcmt

  5. Christian Remus

    Package could be better.

  6. Adrian Sunderland

    Amazing. Replaced the factory plastic SRAM bottom bracket and now I feel
    like I’m flying rather than peddling through treacle and there no flex in the bottom bracket area at all. Very happy!

  7. Home Cooper

    Excellent product and installed perfectly!

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Q & A

Do the DUB models come with spacers to accommodate SRAM's spacer requirements, as found in the following link? https://www.sram.com/globalassets/document-hierarchy/compatibility-map/road/dub-choose-a-road-bottom-bracket-compatibility-map.pdf Thanks! Finn Cox asked on July 1, 2021

No they don't, just be aware the DBCA on SRAM DUB cranks can vary so you may need additional shims. It's described on it's dedicated page here https://www.hambini.com/support/installation/sram-dub-cranksets-into-hambini-bottom-brackets/

admin answered on July 1, 2021 store manager
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