{"id":42397,"date":"2022-10-14T19:16:49","date_gmt":"2022-10-14T17:16:49","guid":{"rendered":"https:\/\/www.bikeradar.com\/?p=700963"},"modified":"2022-10-14T19:35:12","modified_gmt":"2022-10-14T17:35:12","slug":"frame-builder-sturdy-reveals-the-eimar-a-3d-printed-titanium-time-trial-bike","status":"publish","type":"rss_feed","link":"https:\/\/c01.purpledshub.com\/cyclingplus\/rss_feed\/frame-builder-sturdy-reveals-the-eimar-a-3d-printed-titanium-time-trial-bike\/","title":{"rendered":"Frame builder Sturdy reveals the Eimar \u2013 a 3D-printed, titanium time-trial bike\u00a0"},"content":{"rendered":"

<\/p>

By Oscar Huckle\n \t\t<\/p>

Published: Friday, 14 October 2022 at 12:00 am<\/p>

\n\n

The Sturdy Eimar on display at the Bespoked Cycle Show<\/a> is a time trial bike<\/a> crafted from titanium<\/a> with 3D-printed tubes.<\/p>\n

The bike was conceived by Tom Sturdy, who until a year ago designed and manufactured frames in his garden shed.<\/p>\n

The frame is said to weigh 1.4kg in an unspecified size and the complete bike is claimed to come in at just over 8kg.<\/p>\n

Frame details<\/h2>\n
\"""\"<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture><\/div>
It\u2019s a particularly striking build.<\/span><\/figcaption> Oscar Huckle \/ Our Media <\/i><\/span><\/div>\n

The down tube, seatstays and seat tubes have been roll-formed, where the tubes start out round and are then gradually changed to the desired profile. This is for aerodynamic efficiency, whereas the rest of the tubes are printed.<\/p>\n

Sturdy doesn\u2019t make any claims to aerodynamic efficiency but says the bike is designed to be used \u201cin the real world\u201d and he also says it \u201cclimbs relatively well\u201d.<\/p>\n

The frame uses a custom geometry<\/a> to suit Sturdy\u2019s own measurements \u2013 bike fit<\/a> is an incredibly important factor for time trials and will mean you can ride faster when in comfort.<\/p>\n

\"""\"<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture><\/div>
The skinny seatstays meet an aero seat tube.<\/span><\/figcaption> Oscar Huckle \/ Our Media <\/i><\/span><\/div>\n

Surprisingly for a time trial bike, it can fit tyres up to 30mm in width, although a 25mm Continental Grand Prix GP5000 S TR<\/a> tyre features on this build.<\/p>\n

The Eimar\u2019s fork uses a D-shaped steerer tube to hide the brake hoses. Sturdy says the frameset is designed around electronic groupsets<\/a>; the tight angles of the handlebar routing would likely prove an issue for a mechanical gear cable.<\/p>\n

\"""\"<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture><\/div>
The welds are beautiful.<\/span><\/figcaption> Oscar Huckle \/ Our Media <\/i><\/span><\/div>\n

The welds are not in typical locations, but with good reason. Sturdy says he has moved the welds away from where the tubes join each other, as you\u2019d expect them to be welded on other bikes. This is to minimise the risk of failure in peak stress areas.<\/p>\n

The bottle cage mounts are positioned low on the down tube for the aerodynamic benefit and it can accept an aero bottle.<\/p>\n

Titanium base bar and a WattShop topper<\/h2>\n
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A WattShop tri-bar sits atop the own-branded base bar.<\/span><\/figcaption> Oscar Huckle \/ Our Media <\/i><\/span><\/div>\n

The base bar is constructed from three separate titanium pieces and sees welds either side of the conventional stem clamping area. BikeRadar asked Sturdy why this was welded rather than one piece and he replied it would be \u201cdisproportionately expensive\u201d.<\/p>\n

\"""\"<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture><\/div>
There\u2019s plenty of adjustment with the Wattshop set-up.<\/span><\/figcaption> Oscar Huckle \/ Our Media <\/i><\/span><\/div>\n

Sturdy has opted to use a WattShop tri-bar for its \u201cease of adjustability\u201d, rather than create its own design.<\/p>\n

The seatpost is 3D-printed to achieve its aerodynamic shape and uses a flat back for clamping purposes.<\/p>\n

Own-brand everything, pretty much<\/h2>\n
\"""\"<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture><\/div>
The crankset and pulley wheels are own-brand.<\/span><\/figcaption> Oscar Huckle \/ Our Media<\/i><\/span><\/div>\n

Lots of the parts are manufactured by Sturdy. The crankset<\/a>, bottom bracket, thru-axles and pulley wheels are own-brand, as are the disc rotor lockrings and bar-end plugs. Even the chainring is titanium.<\/p>\n

The bottom bracket cups are titanium because \u201cthey\u2019ll last forever\u201d and they house Enduro angular-contact steel rather than ceramic bearings.<\/p>\n

The saddle is Slovenian-based Bjorn\u2019s Carbon Sedlo model.<\/p>\n

\"""\"<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture><\/div>
There\u2019s a disc wheel out back and a 70mm-deep rim at the front.<\/span><\/figcaption> Oscar Huckle \/ Our Media <\/i><\/span><\/div>\n

Despite other parts being pricey, Sturdy has opted to deck the bike out with relatively cheap unbranded carbon wheels. He has a disc wheel in the back and a 70mm-deep front wheel.<\/p>\n

Because this is his personal time trial bike, Sturdy says he\u2019s opted for these wheels due to budgetary constraints.<\/p>\n

He says he finds the wheels to offer \u201ca nice balance of something that rides faster but are still affordable\u201d.<\/p>\n

Even with the fiscally responsible wheels, Sturdy estimates the build to cost in the region of \u00a313,000.<\/p>\n

\"""\"<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture><\/div>
Even the bar-end plugs are Sturdy\u2019s own.<\/span><\/figcaption> Oscar Huckle \/ Our Media <\/i><\/span><\/div>\n

Sturdy specs a SRAM XO1 chain rather than a FlatTop road chain required on eTap AXS setups because he finds \u201cthey are more durable\u201d.<\/p>\n

He also needs to use this because he is running a Rotor 11-36 cassette<\/a>, which he prefers due to the smaller jumps and not needing to use a smaller 10t starting cog, which requires its own freehub<\/a> standard.<\/p>\n

Frame kit and custom geometry<\/h2>\n
\"""\"<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture><\/div>
The Eimar makes a statement.<\/span><\/figcaption> Oscar Huckle \/ Our Media <\/i><\/span><\/div>\n

If you\u2019re enticed by the Eimar\u2019s aesthetics, Sturdy offers a \u2018frame kit\u2019 (effectively the entire bike without the wheels and part of the drivetrain<\/a>) for in the region of \u00a311,000.<\/p>\n

Sturdy says he can arrange a bike fit or use your current bike fit data to create a geometry proposal. He can also make tweaks to the stiffness or flexibility of certain tubes to suit the rider.<\/p><\/body><\/html>\n

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By Oscar Huckle Published: Friday, 14 October 2022 at 12:00 am The Sturdy Eimar on display at the Bespoked Cycle Show is a time trial bike crafted from titanium with 3D-printed tubes. The bike was conceived by Tom Sturdy, who until a year ago designed and manufactured frames in his garden shed. The frame is […]<\/p>\n","protected":false},"author":24,"featured_media":42398,"template":"","categories":[1],"acf":{"readingTimeMinutes":"5"},"uagb_featured_image_src":{"full":["https:\/\/c01.purpledshub.com\/uploads\/sites\/43\/2022\/10\/frame-builder-sturdy-reveals-the-eimar-a-3d-printed-titanium-time-trial-bike.jpg",2048,1365,false],"thumbnail":["https:\/\/c01.purpledshub.com\/uploads\/sites\/43\/2022\/10\/frame-builder-sturdy-reveals-the-eimar-a-3d-printed-titanium-time-trial-bike-150x150.jpg",150,150,true],"medium":["https:\/\/c01.purpledshub.com\/uploads\/sites\/43\/2022\/10\/frame-builder-sturdy-reveals-the-eimar-a-3d-printed-titanium-time-trial-bike-300x200.jpg",300,200,true],"medium_large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/43\/2022\/10\/frame-builder-sturdy-reveals-the-eimar-a-3d-printed-titanium-time-trial-bike-768x512.jpg",768,512,true],"large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/43\/2022\/10\/frame-builder-sturdy-reveals-the-eimar-a-3d-printed-titanium-time-trial-bike-1024x683.jpg",800,534,true],"1536x1536":["https:\/\/c01.purpledshub.com\/uploads\/sites\/43\/2022\/10\/frame-builder-sturdy-reveals-the-eimar-a-3d-printed-titanium-time-trial-bike-1536x1024.jpg",1536,1024,true],"2048x2048":["https:\/\/c01.purpledshub.com\/uploads\/sites\/43\/2022\/10\/frame-builder-sturdy-reveals-the-eimar-a-3d-printed-titanium-time-trial-bike.jpg",2048,1365,false]},"uagb_author_info":{"display_name":"importmanagerhub@sprylab.com","author_link":"https:\/\/c01.purpledshub.com\/cyclingplus\/author\/importmanagerhubsprylab-com\/"},"uagb_comment_info":0,"uagb_excerpt":"By Oscar Huckle Published: Friday, 14 October 2022 at 12:00 am The Sturdy Eimar on display at the Bespoked Cycle Show is a time trial bike crafted from titanium with 3D-printed tubes. The bike was conceived by Tom Sturdy, who until a year ago designed and manufactured frames in his garden shed. The frame is…","_links":{"self":[{"href":"https:\/\/c01.purpledshub.com\/cyclingplus\/wp-json\/wp\/v2\/rss_feed\/42397"}],"collection":[{"href":"https:\/\/c01.purpledshub.com\/cyclingplus\/wp-json\/wp\/v2\/rss_feed"}],"about":[{"href":"https:\/\/c01.purpledshub.com\/cyclingplus\/wp-json\/wp\/v2\/types\/rss_feed"}],"author":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/cyclingplus\/wp-json\/wp\/v2\/users\/24"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/cyclingplus\/wp-json\/wp\/v2\/media\/42398"}],"wp:attachment":[{"href":"https:\/\/c01.purpledshub.com\/cyclingplus\/wp-json\/wp\/v2\/media?parent=42397"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/c01.purpledshub.com\/cyclingplus\/wp-json\/wp\/v2\/categories?post=42397"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}