According to present plans, electric blankets must be faraway from Formula 1 by the 2024 season. Pirelli explains how this measure impacts tire growth.
Formula 1 is the one main racing collection in the world that also makes use of electric blankets. But the unreal pre-curing of rubber must be completed quickly. It will not assist the formidable local weather targets of First Class if the heating caps are pumped into the socket for too lengthy. In addition, groups wish to save on costly gear.
However, electric blankets shouldn’t be eradicated in a single day. Together with the groups and provider Pirelli, the FIA agreed on a tier system. In June 2021, the utmost temperature of the tire heaters has been lowered to 100°C on the entrance and 80°C on the rear. This yr solely 70°C is allowed for all poles. For this objective, the variety of electric blankets was lowered from 40 to twenty.
Mario Isola, Pirelli’s sporting director, explains why the technique of small steps was chosen: “If you wish to drive a automotive with out an electric blanket, you must design a totally new tire. It is just not sufficient to create new compounds with a big working vary. The vehicles in Formula 1 are so quick that they generate nice forces. in order that the strain will increase from ten to 12 whereas driving.This modifications all the profile and get in touch with space of the tire.
High hundreds in Formula 1
Pirelli cannot be taught a lot from Formula 2, the place electric blankets have lengthy ceased to be a problem. In the junior class, the rubber bands are inflated to a strain between 13 PSI and 15 PSI whereas hanging. During stenting, it stabilizes at values barely above 20 PSI. Since vehicles do not usually pack such a big drive, tire specialists say this strain distinction is suitable.
But this isn’t the case in the primary class: “The enhance in strain is twice as excessive as in Formula 2”, Isola believes. “Because of the excessive load, we can’t begin with 15 PSI in Formula 1. Then the drivers ought to have eased up in the beginning of the race and slowly raised the temperature of the tires. Of course not. Work in the race at 20 or 21 PSI. Then the strain is 30 PSI- rises above.
The earlier season, with the present 18-inch tires, lowered temperature specs for electric blankets had been used throughout the check interval. Therefore, there have been no disagreeable surprises when a totally new product was launched. In the upcoming season, the engineers must replenish it once more.
There are plans to ban electric blankets
“Next yr, the temperature of electric blankets will proceed to drop – right down to solely 50 ° C on the back and front,” says Isola. “It additionally will increase the strain distinction in the stents. We intentionally take small steps to make sure that nothing occurs and the present suffers. This yr, the tires are doing very properly. Of course, even when we eradicate this case, it ought to keep that manner. electric blankets.”
A whole ban on tire heating is deliberate for the 2024 season. Before the measure is authorised in the ultimate rules, there must be a dialogue with all events about whether or not they actually wish to take the danger. Smaller groups in explicit are pushing for the ban to stay in place. The plan remains to be in progress, guarantee Pirelli officers.
In current years, a single provider has been confronted with the duty of constructing fully new tires a number of occasions. Most of the testing throughout the growth part takes place on the testing grounds in Milan. However, this can’t fully substitute sensible assessments with new prototypes on an actual race observe. “We want automobiles of the present era. We have to go on completely different roads the place the tires are subjected to completely different hundreds. And we have to drive in completely different circumstances,” emphasizes Isola.
Tires ought to match all automobiles
A file 24 races are deliberate for 2023 in the new calendar, which isn’t met with enthusiasm at Pirelli. This implies that there aren’t any gaps left to check the tires. Mechanics undergo their enamel when confronted with heavy workloads and the stress of journey. However, throughout the European season, some groups can be obliged to run additional check laps for Pirelli on the Tuesday and Wednesday after the Grand Prix weekend.
It is just not simple in future international competitions. Here, Pirelli depends on assessments throughout the occasion. The second free trial is prolonged to 90 minutes and is designed to gather knowledge with prototype tires. This new format can be examined for the primary time this yr in Austin.
“The concept of utilizing FP2 for testing is superb,” says Isola. “Teams do not need to go to the observe or keep lengthy after a race weekend. But when you’ve gotten a new good concept, groups have issues. They complain about having to make use of the identical vehicles and the identical engines. Like on weekends. Running shortly turns into a problem.
However, it can be crucial for tire engineers to have all groups concerned in growth. According to Isola, not all vehicles put the identical quantity of drive on the tires: “The quick vehicles push the tires more durable. We need to make it possible for the warm-up course of additionally works with the gradual vehicles. And now we have to make it possible for the tires do not overheat. It will not be simple to provide you with compromise to make it work on 20 drivers and on all tracks.”