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Frame builder Sturdy reveals the Eimar – a 3D-printed, titanium time-trial bike

Frame builder Sturdy reveals the Eimar – a 3D-printed, titanium time-trial bike

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…

Friday, Oct 14

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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 said to weigh 1.4kg in an unspecified size and the complete bike is claimed to come in at just over 8kg. Frame details

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.

Sturdy doesn’t make any claims to aerodynamic efficiency but says the bike is designed to be used “in the real world” and he also says it “climbs relatively well”.

The frame uses a custom geometry to suit Sturdy’s own measurements – bike fit is an incredibly important factor for time trials and will mean you can ride faster when in comfort.

Surprisingly for a time trial bike, it can fit tyres up to 30mm in width, although a 25mm Continental Grand Prix GP5000 S TR tyre features on this build.The Eimar’s fork uses a D-shaped steerer tube to hide the brake hoses. Sturdy says the frameset is designed around electronic groupsets ; the tight angles of the handlebar routing would likely prove an issue for a mechanical gear cable.The welds are not in typical locations, but with good reason. Sturdy says he has moved the welds away from where […]

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