Porter was luckily at the back of the quartet during the opening laps when the fall occurred, meaning that he did not take down any of his teammates but the fall was very much down to an equipment failure rather than athlete error. That allowed Australia to start a second time but they could only finish fifth with a time of 3:48.448 and so have little hope of fighting for a bronze medal.
The culprit for the Australian crash was the one-piece integrated base bar and stem, and the snap came at the junction where the stem area transitions into the outward-facing base bar.
At first, it appeared as though the cockpit in question was the stock-standard carbon base bar sold by Argon 18 with the Electron Pro track bike. However, on further inspection, it appears the cockpit is in fact the Bastion Base Bar, 3D printed out of titanium to closely mimic the same design.
The Base Bar has been removed from the Bastion website in an action that, according to reports by Cycling Weekly, was done after Porter's crash at the Izu Velodrome.
Bastion is a frame builder and manufacturer of 3D printed titanium parts, commonly using the technology for the lugs on its frames. However, in late 2019, the company announced a partnership with Cycling Australia, tasked with providing custom-moulded handlebars and aero extensions for the team's track bikes.
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Highlighted here on the Bastion Base Bar, the junction protrudes outward and downward, with a concave section(Image credit: Bastion Advanced)
From this image, it appears the snapped bar features that same concave design shown on the Bastion Base Bar(Image credit: Eurosport)
In contrast, the carbon fibre base bar from Argon 18 is less pronounced and convex in shape(Image credit: Argon 18)
Comparing the image of the remnants of the broken cockpit with that of the Bastion Base Bar, there is an ever so slight difference that confirms that we're not looking at the carbon fibre base bar supplied by Argon 18.
As the side of the stem area protrudes outward to form the base bar, there is a slight concave nature to the upper edge. This same concave detailing can be found on the 3D printed Bastion Base Bar. Meanwhile, the Argon 18 base bar is convex as it rounds upwards and outwards to the handlebar area of the cockpit.
Looking at the Bastion Base Bar more closely, it becomes clear that there are four mounting points hidden beneath the cover that sits on top, and that the snapped handlebar could easily have been as a result of over-tightening the frontal most bolt.
The break occurred at the line which intersects the front mounting bolt hole. (Image credit: Bastion Advanced)
As shown in the image above, the point of failure occurred very close to, if not directly through the frontal bolt hole, and could suggest that over-tightening of that bolt was the cause of the failure.
Josh is Associate Editor of Cyclingnews – leading our content on the best bikes, kit and the latest breaking tech stories from the pro peloton. He has been with us since the summer of 2019 and throughout that time he's covered everything from buyer's guides and deals to the latest tech news and reviews.
On the bike, Josh has been riding and racing for over 15 years. He started out racing cross country in his teens back when 26-inch wheels and triple chainsets were still mainstream, but he found favour in road racing in his early 20s, racing at a local and national level for Somerset-based Team Tor 2000. These days he rides indoors for convenience and fitness, and outdoors for fun on road, gravel, 'cross and cross-country bikes, the latter usually with his two dogs in tow.
