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Direct link to the video: https://twitter.com/McLarenF1/status/1711344933280330123 https://twitter.com/McLarenF1/status/1711344933280330123 Do the tires have

Direct link to the video: https://twitter.com/McLarenF1/status/1711344933280330123 https://twitter.com/McLarenF1/status/1711344933280330123 Do the tires have no bolts, or now is this even possible? Watching it in action, I can't tell what is actually happening to get the wheels off and secure the fresh ones.

tnorthcutt 3y ago
Here's a video that goes into some detail on how they're attached: https://www.youtube.com/watch?v=X30coNL4Jw8 https://www.youtube.com/watch?v=X30coNL4Jw8
aidenn0 3y ago
In the third angle, you can see the guy with the power-wrench for the left-front wheel. F1 cars have a single lug per wheel (which is a big reason why pits are faster than in NASCAR).
- ebagl3 3y ago
  F1 also ONLY does tires on a standard pit stop and are allowed to have people changing all tires at same time. NASCAR can only change 2 at a time
- rascul 3y ago
  NASCAR has single lug per wheel now.
  - aidenn0 3y ago
    Wow, I hadn't watched in a while. They apparently allow fuel-injection now too (NASCAR used carburetors through 2012!)
    - ok_dad 3y ago
      This isn’t your father’s NASCAR! THEY EVEN RACED ON DIRT AGAIN! One of the cars was even entered in 24h of Le Mans (garage56) and did pretty well. It’s actually pretty cool how they’re transforming it into something a bit more than driving around in a circle for hours.
      - nemo44x 3y ago
        > It’s actually pretty cool how they’re transforming it into something a bit more than driving around in a circle for hours. Although I think it’s great to see dirt races (I grew up watching late model dirt tracks) I disagree that the super speedways are just driving around in a circle. One of the major factors of NASCAR was that the engines were built and tuned by the crew and the driver had to be able to push it to the limits over an extended period of time. Mistuning and/or too aggressive driving would blow the engine. The really good drivers knew when to push it over the edge for just a few moments to get advantage.
        ddoolin 3y ago
        I think once you're trying to explain that nuance, most of the audience (that NASCAR would like to tune in) has probably already tuned out. It is very welcome for them to start pivoting heavily towards road courses, dirt courses, and even street races (not to mention wet weather tires), as it opens up the field to WAY more driver skill sets and strategy than just tire falloff, fuel, and gaming restarts.
        nemo44x 3y ago
        Indeed. For me just the sound and the speed is enough but that doesn’t translate to TV well. NASCAR is a funny sport in that it was built around a particular technology around a particular time. The level of innovation the mechanics came up with really drive the sport. But the ICE is in many ways at end of life and it’s obvious they’ll be extinct in 30 years. So I suppose the sport has to evolve itself somehow.
      - 1970-01-01 3y ago
        Seems like they could go all the way back to their roots and race actual stock cars.
    - rascul 3y ago
      Also independent rear suspension and a sequential gearbox now.
    - interestica 3y ago
      Not a car guy. What's the advantage of fuel injection and why did they stick with it so long?
      - pests 3y ago
        Fuel injection is electrically and computer controlled while carburetors rely on air pressure changes and is completely mechanical. Why did they stick with carbs for so long? Lots of reasons but a few: Fuel injectors allow for more power so giving every car a boost was a delibrate decision - NASCAR already has other speed-reducing technology on purpose. Switching also meant every team spending millions and redesigning their entire engine to take advantage of the new tech. Carbs had ossified so teams were pretty level on this front indepenent of money so switching also would give teams with money money a bigger advantage.
      - aidenn0 3y ago
        First why they stuck fuel injection (FI) for so long: They banned FI after the 1957 Chevy came out with it (FI was not standard in the '57, but enough were produced with FI to qualify as "stock") and dominated NASCAR. One should note that even with a carburetor, the '57 was really good. They kept the ban for tradition I think more than anything else. When the banned FI, it was still rather exotic, but by the 90s, essentially all new mass-market cars were fuel injected. Carburetors are rather finicky; they rely on basic physics to maintain a proper fuel-air mixture and doing so over a wide range of temperatures and RPMs is hard. Since fuel-injectors are electronically controlled you can do a lot more with them, so they can maximize power and fuel-economy over a broader environmental range.
- dizhn 3y ago
  My bike's rear is also a single lug. Including the time required to find and source the required tool it took me about 10 days to change the tire the first time.
  - SenHeng 3y ago
    Honda PRO-ARM? Loved those.
    - dizhn 3y ago
      It's a Ducati Multistrada.
- mdekkers 3y ago
  Fun fact: The wheel impact guns are all custom-made for each team, there is a single company that makes them, Dino Paoli https://www.dinopaoli.com/en/motorsport/ https://www.dinopaoli.com/en/motorsport/ Also see https://www.finepowertools.com/drills/f1-wheel-gun/ https://www.finepowertools.com/drills/f1-wheel-gun/ for some more background
karmakaze 3y ago
Wow. What really impresses me isn't how fast, it's how smooth everyone did their things in concert with everyone else. Smooth really is fast.

tnorthcutt 3y ago

Here's a video that goes into some detail on how they're attached: https://www.youtube.com/watch?v=X30coNL4Jw8 https://www.youtube.com/watch?v=X30coNL4Jw8

aidenn0 3y ago

In the third angle, you can see the guy with the power-wrench for the left-front wheel. F1 cars have a single lug per wheel (which is a big reason why pits are faster than in NASCAR).

ebagl3 3y ago
F1 also ONLY does tires on a standard pit stop and are allowed to have people changing all tires at same time. NASCAR can only change 2 at a time
rascul 3y ago
NASCAR has single lug per wheel now.
- aidenn0 3y ago
  Wow, I hadn't watched in a while. They apparently allow fuel-injection now too (NASCAR used carburetors through 2012!)
  - ok_dad 3y ago
    This isn’t your father’s NASCAR! THEY EVEN RACED ON DIRT AGAIN! One of the cars was even entered in 24h of Le Mans (garage56) and did pretty well. It’s actually pretty cool how they’re transforming it into something a bit more than driving around in a circle for hours.
    - nemo44x 3y ago
      > It’s actually pretty cool how they’re transforming it into something a bit more than driving around in a circle for hours. Although I think it’s great to see dirt races (I grew up watching late model dirt tracks) I disagree that the super speedways are just driving around in a circle. One of the major factors of NASCAR was that the engines were built and tuned by the crew and the driver had to be able to push it to the limits over an extended period of time. Mistuning and/or too aggressive driving would blow the engine. The really good drivers knew when to push it over the edge for just a few moments to get advantage.
      - ddoolin 3y ago
        I think once you're trying to explain that nuance, most of the audience (that NASCAR would like to tune in) has probably already tuned out. It is very welcome for them to start pivoting heavily towards road courses, dirt courses, and even street races (not to mention wet weather tires), as it opens up the field to WAY more driver skill sets and strategy than just tire falloff, fuel, and gaming restarts.
        nemo44x 3y ago
        Indeed. For me just the sound and the speed is enough but that doesn’t translate to TV well. NASCAR is a funny sport in that it was built around a particular technology around a particular time. The level of innovation the mechanics came up with really drive the sport. But the ICE is in many ways at end of life and it’s obvious they’ll be extinct in 30 years. So I suppose the sport has to evolve itself somehow.
    - 1970-01-01 3y ago
      Seems like they could go all the way back to their roots and race actual stock cars.
  - rascul 3y ago
    Also independent rear suspension and a sequential gearbox now.
  - interestica 3y ago
    Not a car guy. What's the advantage of fuel injection and why did they stick with it so long?
    - pests 3y ago
      Fuel injection is electrically and computer controlled while carburetors rely on air pressure changes and is completely mechanical. Why did they stick with carbs for so long? Lots of reasons but a few: Fuel injectors allow for more power so giving every car a boost was a delibrate decision - NASCAR already has other speed-reducing technology on purpose. Switching also meant every team spending millions and redesigning their entire engine to take advantage of the new tech. Carbs had ossified so teams were pretty level on this front indepenent of money so switching also would give teams with money money a bigger advantage.
    - aidenn0 3y ago
      First why they stuck fuel injection (FI) for so long: They banned FI after the 1957 Chevy came out with it (FI was not standard in the '57, but enough were produced with FI to qualify as "stock") and dominated NASCAR. One should note that even with a carburetor, the '57 was really good. They kept the ban for tradition I think more than anything else. When the banned FI, it was still rather exotic, but by the 90s, essentially all new mass-market cars were fuel injected. Carburetors are rather finicky; they rely on basic physics to maintain a proper fuel-air mixture and doing so over a wide range of temperatures and RPMs is hard. Since fuel-injectors are electronically controlled you can do a lot more with them, so they can maximize power and fuel-economy over a broader environmental range.
dizhn 3y ago
My bike's rear is also a single lug. Including the time required to find and source the required tool it took me about 10 days to change the tire the first time.
- SenHeng 3y ago
  Honda PRO-ARM? Loved those.
  - dizhn 3y ago
    It's a Ducati Multistrada.
mdekkers 3y ago
Fun fact: The wheel impact guns are all custom-made for each team, there is a single company that makes them, Dino Paoli https://www.dinopaoli.com/en/motorsport/ https://www.dinopaoli.com/en/motorsport/ Also see https://www.finepowertools.com/drills/f1-wheel-gun/ https://www.finepowertools.com/drills/f1-wheel-gun/ for some more background

karmakaze 3y ago

Wow. What really impresses me isn't how fast, it's how smooth everyone did their things in concert with everyone else. Smooth really is fast.