{"id":48385,"date":"2023-04-21T18:00:42","date_gmt":"2023-04-21T16:00:42","guid":{"rendered":"https:\/\/www.bikeradar.com\/?p=725034"},"modified":"2023-04-21T18:35:39","modified_gmt":"2023-04-21T16:35:39","slug":"bridge-bike-works-new-bottom-bracket-is-moulded-directly-into-the-carbon-frame","status":"publish","type":"rss_feed","link":"https:\/\/c01.purpledshub.com\/cyclingplus\/rss_feed\/bridge-bike-works-new-bottom-bracket-is-moulded-directly-into-the-carbon-frame\/","title":{"rendered":"Bridge Bike Works\u2019 new bottom bracket is moulded directly into the carbon frame"},"content":{"rendered":"

And a first look at the Canadian brand’s new all-road bike, the Surveyor <\/p>

By George Scott\n \t\t<\/p>

Published: Friday, 21 April 2023 at 12:00 am<\/p>

\n\n

Bridge Bike Works has a new bottom bracket design on show at the Sea Otter Classic in California \u2013 with the threads moulded into the carbon frame.<\/p>\n

The Integrally Threaded Carbon Bottom Bracket, as it\u2019s named by Bridge, features on the Toronto-based brand\u2019s new all-road bike, the Surveyor.<\/p>\n

The Surveyor uses the T47 bottom bracket standard<\/a> but, rather than bonding the bearing sleeve into the frame, the threads are moulded directly into the carbon fibre bottom bracket shell.<\/p>\n

As we\u2019ve seen across the industry, bike brands are now moving back to threaded bottom brackets on road and gravel bikes, after a two-decade flirtation with press-fit systems<\/a>.<\/p>\n

Bridge co-founder Michael Yakubowicz told BikeRadar he is a firm believer in threaded bottom brackets, but the brand\u2019s new design is lighter, simpler and reduces the chances of misalignment in the bottom bracket shell.<\/p>\n

\"""\"<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture><\/div>
Bridge debuted the Integrally Threaded Carbon Bottom Bracket at the Sea Otter Classic. This is a pre-production prototype.<\/span><\/figcaption> George Scott \/ Our Media<\/i><\/span><\/div>\n

Let\u2019s start with weight. Yakubowicz says combining the threads and the frame cuts the majority of the material out of a traditional threaded bottom bracket, saving in the region of 100g. Whether that matters to you or not is a different question.<\/p>\n

\"""\"<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture><\/div>
The threads are moulded directly into the carbon frame.<\/span><\/figcaption> Bridge Bike Works<\/i><\/span><\/div>\n

As for alignment, Yakubowicz says that, with the threads moulded to shape, the \u201cBB is perfectly aligned out of the tool\u201d. This avoids, the brand says, the possibility of the bearing cups being misaligned, or poor quality control of the bottom bracket area leading to non-concentricity. We\u2019ve only seen this for the first time at Sea Otter<\/a> so can\u2019t comment on performance or longevity.<\/p>\n

\"""\"<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture><\/div>
Bridge has used the T47-86 bottom bracket standard.<\/span><\/figcaption> George Scott \/ Our Media<\/i><\/span><\/div>\n

The threads have a Cerakote coating to create a \u201crobust barrier\u201d between the frame and bearing cups, according to Bridge. Bridge also claims it protects them from galvanic corrosion.<\/p>\n

Bridge has opted to use the standard T47-86 bottom bracket standard for the Surveyor, meaning it is compatible with 86mm-wide shells. However, the brand says the moulded technology can be applied to \u201cany threads on the bike, including other standard bottom brackets\u201d.<\/p>\n

\"""\"<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture><\/div>
The Surveyor is Bridge Bike Works\u2019 first frameset.<\/span><\/figcaption> George Scott \/ Our Media<\/i><\/span><\/div>\n

As for the Surveyor, this is Bridge\u2019s first bike, and it\u2019s made in Toronto. It\u2019s pitched as an <\/span>all-road bike<\/span><\/a>, with clearance for 28-40mm tyres. <\/span><\/p>\n

The claimed frame weight is approximately 900g for a size 55cm and the geometry is described as \u201call-road race\u201d.<\/span><\/p>\n

\"""\"<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture><\/div>
The frame has clearance for 28-40mm tyres.<\/span><\/figcaption> George Scott \/ Our Media<\/i><\/span><\/div>\n

It\u2019s a blend of new and old, with internal cable routing and that generous tyre clearance, combined with clean lines, a round seatpost<\/a> and, of course, the threaded bottom bracket.<\/span><\/p>\n

The frameset, with Bridge\u2019s new All-Road Integrated Fork (also available to buy aftermarket costs $5,499.99 and Bridge offers a range of all-road and gravel builds.<\/span><\/p>\n

\""Bridge\"<\/picture><\/div>
The geometry is described as \u201call-road race\u201d, based around 417mm chainstays.<\/span> <\/figcaption> George Scott \/ Our Media<\/i> <\/span>\n<\/div> <\/figcaption><\/figure><\/div>
\""Bridge\"<\/picture><\/div>
Clean lines and a round seatpost.<\/span> <\/figcaption> George Scott \/ Our Media<\/i> <\/span>\n<\/div> <\/figcaption><\/figure><\/div>
\""Head\"<\/picture><\/div>
Bridge Bike Works is based in Toronto, Canada.<\/span> <\/figcaption> George Scott \/ Our Media<\/i> <\/span>\n<\/div> <\/figcaption><\/figure><\/div> <\/div>\n<\/div>\n<\/div> <\/body><\/html>\n
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