http://www.angelfire.com/ak2/intelligen ... tstop.html
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| Author: | Gregory [ Tue Feb 25, 2014 6:18 pm ] |
| Post subject: | TIMING |
| http://www.angelfire.com/ak2/intelligen ... tstop.html |
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| Author: | cliff [ Tue Feb 25, 2014 9:25 pm ] |
| Post subject: | Re: TIMING |
This stuff is always amazing to watch. Up until a few years ago, when re-fueling was banned, tire changes did not need to be any faster than the time it took to add fuel to the car, hence usually in the 5-6 second range. Now, tire change is the primary agenda for an F1 pit stop, and the act has been perfected. The current record is 1.9 seconds. Yes…1.9 seconds. Equally interesting in the clip Greg posted is the back-up systems. Note that the rear jack man is actually backed up by a second one in waiting, in case the jack fails. Also interesting that the action is not symmetrical, in that the left rear tire comes from the opposite direction as the right rear, apparently to allow the rear jack man unencumbered access, rather than having to move into position right next to the new tire carrier. Instead, on that corner only, the tire remover approaches from the rear. Note that there are two men, one on each side, in the center, whose jobs are primarily to stabilize the car so that it does not rock side-to-side and complicate wheel placement. They also remove debris from the side-pod radiators when necessary. In addition to the wheel change, note the two men at the front corners are there to remove debris in the front wing and brake ducts. The one on the left front appears to pull a visor tear off out of the wing flap during the stop. Also note that the four guys operating the air guns (one at each wheel) have bright colored gloves so that the jack men can identify those eight hands in the crowd, and determine that the guns have been retracted, hence the wheel change is complete, and the signal man at the front can then check for other pit lane traffic and release the driver to depart. Not seen here, but even more dazzling is when an entire damaged nose and front wing assembly are changed in only a second or two more. What a dance! Thanks for posting that, Greg. |
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| Author: | Gregory [ Tue Feb 25, 2014 10:28 pm ] |
| Post subject: | Re: TIMING |
Interesting observations, Cliff. I could even figure out how it all happened until I picked out one guy at a time to watch, and then reran the video over and over. I trust the guy on the nose jack is well paid. I'm not sure I'd feel all that comfortable with an F! car coming in hot and standing right where it's supposed to stop. |
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| Author: | cliff [ Wed Feb 26, 2014 10:58 am ] |
| Post subject: | Re: TIMING |
In the second pre-season four day test session in Bahrain, one team (Williams) did 55 consecutive laps without posting a lap time. The car came down the pit lane instead of the front straight on every lap, and every laps was a pit stop drill. Fifty-five of those exercises consecutively, with about 100 seconds between them while the car circulated the track again.  Testing time in F1 is severely limited by rule, and this year introduces a completely new set of very complicated power unit specs. Most team have spent the first 8 days of testing just figuring out how to get the car to go a race distance with the totally new designs. The fact that a team would spend that much of this valuable testing time on pit stop drills (tire change, nose & wing change, back-up planning and error recovery) highlights the importance. Gaining a fraction of a second is critical in F1. On the other side, watching a stop where something has gone wrong is like watching an occupied building burn. Seconds seem like eons. When 2 +/- second stop turns into a 10 second stop, that team's race is pretty much done. |
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