Cavendish (Deceuninck - Quick-Step) had made it into a talented breakaway along with team-mate Tim Declercq early on in the stage, but became frustrated with the motorbike sitting behind the leaders after they dropped a dangerous rider for the overall in Mark Donovan (DSM).
The 36-year-old was seen shouting and gesticulating towards the camera bike as they tried to distance Donovan, the breaking trying to prevent the peloton from chasing.
Cavendish took a moment when the bike pulled alongside to explain his annoyance before cameras cut away. He said: "For all you people at home, these motorbikes have a bearing on the race. The guys are sat on them..."
Before that rather comical moment of the 34-time Tour de France stage winner adding some commentary while racing he was shouting at the motorbike.
"You're helping them. What's wrong with you?" before shaking his head.
These feisty moments were compiled into a montage by the GCN Racing Twitter page.
Cav getting feisty! Mark Cavendish "politely" informs the camera bike that he should stop giving a tow to Mark Donovan.The breakaway had worked hard to distance the rider who sat 9th on GC at the Tour of Britain, as his presence induced a chase from behind. pic.twitter.com/C9K74U76j2September 10, 2021
In a research piece conducted in 2019 by Professor Bert Blocken of Eindhoven University, it was revealed that riders do get a huge amount of help from a motorbikes presence, even from as far as 30 metres.
If a rider is at 30m behind the motorbike, drag is reduced by 12 per cent which would give a rider an advantage of 2.6 seconds every minute over a rider who did not have that support.
If a rider is cycling at 54km/h without a motorbike in front then the presence of a motorbike will allow them to ride at 67km/h, providing a time gain of 14.1 seconds every minute, depending on how close that bike is.
Cavendish was looking for a potential win on an unlikely stage in an unusual manner to what we're used to seeing from him, as he took on the day's break over tough terrain that covered three Pennine mountain passes and several tough kicks that even saw him put in a couple of solo attacks.
However, it wasn't to be for Cavendish who, along with his fellow breakaway riders, was caught with around 15km to go as various teams were looking to close the break down so they could have a go at a possible stage win.
Cavendish was also involved in the bunch sprint the day before on stage five into Warrington, where he finished fifth behind stage winner and leader's jersey Ethan Hayter (Ineos Grenadiers) after he had to put a lot of energy in to get back to the wheels after narrowly avoiding a late crash.
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