Sports

Why Bottas’ F1 pit stop lasted 43 hours – Motorsports

The F1 team regularly increased the stops in about two seconds, so it was very shocking that Mercedes had to wait for the car to come back to the factory on Tuesday morning and then remove the wheels. More than 43 hours since the pit stop started.

So what was wrong with Mercedes, and what’s so special about the equipment the team is using to allow them to break the two-second barrier?

In fact, for Bottas, the reason behind the disastrous consequences is the way things stop so fast.

Pit stop details

Mercedes has 20 mechanics at this particular stop (below). 3 people on each wheel-one with the wheels, one with the wheels off, one on the wheel gun, one on the front and rear jacks, one on each. There are spare jacks in front and behind, one on each side of the center of the car to keep you safer while off the ground, one on the manual crank brake board, and a chief observer.

Lewis Hamilton, Mercedes W12 Pit Stop

Photo courtesy of Jerry Andre / Motorsport images

If you need to adjust the front wing, you can add two more mechanisms to the mix (see below). This allows many moving parts and personnel who need to be at the absolute top of the game to work in perfect harmony to create the best stop.

There are drivers in the sea of ​​people waiting to change wheels and tires, adjust the front wing, unjack, disengage the clutch and leave.

But before that happens, they need to slow down the car and reach the goal with absolute accuracy by a few centimeters difference, and the mechanics need to shuffle to make up for it, so they have time. Will be wasted.

Lewis Hamilton, Mercedes W12 Pit Stop

Lewis Hamilton, Mercedes W12 Pit Stop

Photo: Glen Dunbar / Motorsport images

In the case of Mercedes and Bottas, Finn was slightly below his main marker, and a slight misalignment seemed to have triggered a series of events that led to his end in Monaco.

The mechanic moved around to make up for it, but could have accidentally overshooted. The mechanic with wheels on the front right side got too close to the new wheels, so the gun operator could adjust without the space needed. And.

This required the gun operator to mount the gun with the handle approximately horizontal, rather than the usual 45-60 degree angle (see below).

Not only did this mean that the socket was not properly aligned with the nut, but it also meant that normal force could not be applied.

When the gun was mounted diagonally rather than at right angles to the nut, the impact between the gun and nut mechanically scraped the metal.

Valtteri Bottas, Mercedes W12 Pit Stop

Valtteri Bottas, Mercedes W12 Pit Stop

Photo courtesy of: Motorsport images

We’ve all seen what happened next: the front wheel nut positioning lugs came off and aluminum powder visibly came out of the stage. The gun operator solved the situation. Despite his bold efforts to do so, the dice had already been thrown. Bottas is out of the race.

Top gun

During that series of events, you may have noticed that the gun operator appears to have punched the sides of the gun several times.

This was not a reaction of anger, but the use of a directional shuttle for the gun, which automatically switches direction as the gun rotates.

This reduces one physical activity that the operator needs to be aware of when the old wheel comes off and the new wheel moves, allowing you to stop more quickly under normal conditions.

However, if this happens, you will need to manually disable the gun. You can see the shuttle on the rear spare gun (white arrow above).

The Italian company Paoli supplies wheel guns with a weight of about 4 kg and a torque of about 4000 nm for the entire grid and almost every other motorsport.

Not all are the same, as each team chooses from Paoli’s wide range of products, as well as other equipment selections, ergonomics, and most importantly, customization to their needs. performance.

Here we will look at how each team adapted their guns better.

Mercedes Pit Stop Details

Mercedes Pit Stop Details

Photo: Steve Etherrington / Motorsport images

Mercedes‘The wheel gun has a top hold molded grip and the mechanic chooses to hold the gun sideways during operation. It still features a traditional directional shuttle, but its design isn’t entirely standard and features a rear tab and flat edges rather than the dome-shaped design found elsewhere. ..

Red Bull Pit Crew Wheel Gun Operator

Red Bull Pit Crew Wheel Gun Operator

Photo courtesy of Charles Coates / Motorsport images

Red bullWheelgun customization clearly needs to be at the top of the game, and crew members can often achieve the Holy Grail in less than two seconds. You can see the carbon shroud and light system above the gun.

Red Bull Racing Wheel Gun Details

Red Bull Racing Wheel Gun Details

Photo courtesy of: Red Bull Content Pool

From the bottom, you can see how the carbon shroud is engraved. Not only is the button next to the mechanic’s finger, but there is also an easy-to-use toggle switch. Interestingly, they don’t seem to have a traditional shuttle on the butt of the gun.

Ferrari wheel gun details

Ferrari wheel gun details

Photo courtesy of: Motorsport images

Ferrari Of course, the gun has a red body, but the mechanic instead chooses not to have an overly carved top grip because it holds the gun near the collar.

You will also notice that there is a carbon cover over the shuttle to prevent mechanics from inadvertently using it. On the other hand, a rocker switch near the mechanic’s finger can signal the gantry light system.

Details of McLaren Wheel Gun

Details of McLaren Wheel Gun

Photo courtesy of Jerry Andre / Motorsport images

McLarenThe gun has an engraved perimeter that wraps around the body of the gun, making it more ergonomic for the user and also accommodating electronic components. Also, be aware of the manual extraction tools and spare wheel nuts that the mechanic has at hand in the event of an airline failure to his section of the gantry.

Esteban Ocon, Alpine A521 pit stop

Esteban Ocon, Alpine A521 pit stop

Photo: Glen Dunbar / Motorsport images

TakayamaThe gun has a custom body rather than a shroud, but it’s not as ergonomic as its competitors. A large disc is attached to the end of the shuttle to help the mechanic get up quickly and reliably.

Aston Martin wheel gun details

Aston Martin wheel gun details

Photo: Glen Dunbar / Motorsport images

Aston MartinWheelguns are, of course, very similar to Mercedes.

AlphaTauri Wheel Gun

AlphaTauri Wheel Gun

Photo courtesy of Jerry Andre / Motorsport images

Alpha Tauri When this photo was taken, the spare gun was uncovered and I could ideally see the gun from different angles. You will notice that the directional shuttle is exposed and has a large disc at its end to activate the direction of the gun.

Alfa Romeo Racing Wheel Gun Details

Alfa Romeo Racing Wheel Gun Details

Photo courtesy of Alfa Romeo

Alfa RomeoThe gun has some parts that the mechanic hits to get it right, but the traditional shuttle is still in operation. Interesting cohesion systems are also used by supporting mechanics.

George Russell, Williams FW43B Pit Stop

George Russell, Williams FW43B Pit Stop

Photo: Mark Sutton / Motorsport images

WilliamsThe gun does not have the extreme contour grip found elsewhere on the grid.

Pit lane wheel gun

Pit lane wheel gun

Photo: Mark Sutton / Motorsport images

Haas Takes a relatively simple approach to the wheel gun, and the addition of an ergonomic grip to the barrel of the supporting hand is the only real customization.

Captive nut

The Formula 1 team moved to the captive wheel nut system about 10 years ago. This is not only to improve pit stop time, but also to work in conjunction with the retention system introduced for safety.

Of course, like wheel guns, each team has its own design, and the nut lugs are designed to work with the gun socket to avoid misalignment.

Comparison of Mercedes Wheel Nuts

Comparison of Mercedes Wheel Nuts

Photo: No credit

As can be seen here, the force acting on the wheel nut means that its integrity is compromised, so the wheel nut is considered in many ways a perishable item.

“This is an impact force, and the nut usually loosens with four to five impacts with a hammer hit,” he said.

“What happened now is that when we angle it slightly and the socket is connected to the nut, there is a slight angle to it, and as a result, instead of distributing the load throughout the nut, it’s small. I tore the metal clean across the section. “

Fewer problems during the stop, as a whole, indicates that the team is successfully handling the design and procedures for a successful stop.

And since both on and off equipment of the machine is covered by the 2021 homologation rules, the lessons learned from the situation by Mercedes mean that it can only be applied to next season’s hardware.

However, details of what went wrong, including Bottas losing a bit of position, will be taken to prevent the same thing from happening this year.

– Motorsports

Why Bottas’ F1 pit stop lasted 43 hours

https://www.motorsport.com/f1/news/how-bottas-pitstop-ended-up-being-43-hours-long/6516768/?utm_source=RSS&utm_medium=referral&utm_campaign=RSS-ALL&utm_term=News&utm_content=www Why Bottas’ F1 pit stop lasted 43 hours

Back to top button