IndyCar »

More push-to-pass changes for Sonoma

The IZOD IndyCar Series has made further minor changes to the push-to-pass turbo power boost system ahead of this weekend's GoPro Indy Grand Prix of Sonoma race.
The IZOD IndyCar Series continues to fine tune its technical regulations, with further changes to the recently re-introduced "push-to-pass" overtake system in time for this weekend's race at Sonoma Raceway.

The push-to-pass button adds 200rpm of extra turbocharger boost to the power output of the 2012 specification 2.2-litre V6 engines to make overtaking moves possible on street and road course circuits, in a rough equivalent to the DRS or KERS boost seen in F1.

However, officials were disappointed when its main use at Edmonton was by race leader Helio Castoneves using it to hold off Takuma Sato in the last 15 laps of the race. Castroneves was able to deploy the system at the direction of his pit crew who could see real-time information about other competitors using push-to-pass from the live TV feed and timing and scoring system.

As a result, for the following race at Mid-Ohio the series introduced a five second delay between the pressing of the button and the power coming online, which meant that it couldn't be used fast enough in response to other cars attacking from behind and was only effective in planning overtaking moves in advance on cars in front.

After analysing the racing action from that race, IndyCar has now trimmed the activation delay down to 3.5 seconds for this weekend's GoPro Indy Grand Prix of Sonoma. The series also confirmed that drivers will have a total boost time of 90 seconds available to them for the duration of the race, in bursts no longer than 15 seconds in duration.

"All parameters of the push-to-pass system can be tailored to fit any circuit that play host to IZOD IndyCar Series races," explained IndyCar's director of engine development, Trevor Knowles. "Sonoma has shorter straightaways than what we had at Mid-Ohio, so we've adjusted the parameters of push-to-pass to fit this particular circuit. But the principles for use that were in place for Mid-Ohio have remained the same for Sonoma."

The series has opted not to introduce a recharge time between uses of the push-to-pass system at this stage. The system will be used only once more in 2012, at the following week's race in Baltimore, and will not feature in the mid-September series finale on the Auto Club Speedway oval course in Fontana, California.

Teams were able to test the tweaked power boost settings at the end of last week in their one day open test at Sonoma. Drivers used the time to get used to the revised layout of the track, formerly known as Infineon Raceway and before that as Sears Point Raceway.

The run down to the hairpin turn 11 has been lengthened by 200 feet to make a deeper turn, giving drivers more opportunity to out-brake their competitors and to get a better run out of the turn and set up a pass into turn 12. The exit from the Bus Stop (turn 9) has be widened, and turn 7 has been remodelled into a new hairpin. The changes make the circuit into a 12-turn, 2.31-mile road event.

The drivers seemed largely happy with the changes to the track after their first taste of it last Friday.




Related Pictures

Click on relevant pic to enlarge
Cars battle on track at Infineon Raceway. [Photo credit: Chris Jones for IndyCar Media]
Marco Andretti, Takuma Sato and Martin Plowman battle on track at Infineon Raceway. [Photo credit: Chris Jones for IndyCar Media]
Will Power leads the field on track at Infineon Raceway. [Photo credit: Richard Dowdy for IndyCar Media]
Scott Dixon sprays the champagne in Victory Circle following his win in the GoPro Grand Prix of Sonoma at Sonoma Raceway. (Photo by: Chris Owens for IndyCar Media)
Scott Dixon is congratulated by Dario Franchitti after winning the 2015 Verizon IndyCar Series Championship. (Photo by: Shawn Gritzmacher for IndyCar Media)
Scott Dixon with a victory kiss from his wife, Emma, following clinching the 2015 Verizon IndyCar Series Championship. (Photo by: Shawn Gritzmacher for IndyCar Media)
Scott Dixon celebrates his victory in the GoPro Grand Prix of Sonoma and the 2015 Verizon IndyCar Series Championship. (Photo by: Shawn Gritzmacher for IndyCar Media)
Scott Dixon, driver of the #9 Target Chip Ganassi Racing Chevrolet IndyCar V6, races to victory Sunday, August 30, 2015, winning the final Verizon IndyCar Series race of the season and the 2015 Verizon IndyCar Series Driver`s Championship at Sonoma Raceway in Sonoma, California. Chevrolet also wins its fourth consecutive Verizon IndyCar Series Manufacturer`s Championship. (Photo by Ernie Masche/LAT for Chevy Racing)
Scott Dixon (left), driver of the #9 Target Chip Ganassi Racing Chevrolet IndyCar V6, celebrates his victory Sunday, August 30, 2015, after winning the final Verizon IndyCar Series race of the season and the 2015 Verizon IndyCar Series Driver`s Championship at Sonoma Raceway in Sonoma, California. Joining him on the podium is Charlie Kimball, driver of the #83 Novolog Flexpen Chip Ganassi Racing Chevrolet IndyCar V6 who finished third. Chevrolet won its fourth consecutive Verizon IndyCar Series Manufacturer`s Championship. (Photo by Phillip Abbott/LAT for Chevy Racing)
Scott Dixon, driver of the #9 Target Chip Ganassi Racing Chevrolet IndyCar V6, takes the chequered flag Sunday, August 30, 2015, winning the final Verizon IndyCar Series race of the season and the 2015 Verizon IndyCar Series Driver`s Championship at Sonoma Raceway in Sonoma, California. Chevrolet also wins its fourth consecutive Verizon IndyCar Series Manufacturer`s Championship. (Photo by Perry Nelson/LAT for Chevy Racing)
Scott Dixon, driver of the #9 Target Chip Ganassi Racing Chevrolet IndyCar V6, races to victory Sunday, August 30, 2015, winning the final Verizon IndyCar Series race of the season and the 2015 Verizon IndyCar Series Driver`s Championship at Sonoma Raceway in Sonoma, California. Chevrolet also wins its fourth consecutive Verizon IndyCar Series Manufacturer`s Championship. (Photo by Michael L. Levitt/LAT for Chevy Racing)
Scott Dixon - 2015 Verizon IndyCar Series champion - Target Chip Ganassi Racing (Photo by: Bret Kelley for IndyCar Media)
Scott Dixon celebrates after winning the GoPro Grand Prix of Sonoma and clinching the 2015 Verizon IndyCar Series championship at Sonoma Raceway (Photo by: Richard Dowdy for IndyCar Media)
Scott Dixon celebrates after winning the GoPro Grand Prix of Sonoma and clinching the 2015 Verizon IndyCar Series championship at Sonoma Raceway (Photo by: Chris Jones for IndyCar Media)
Scott Dixon celebrates after winning the GoPro Grand Prix of Sonoma and clinching the 2015 Verizon IndyCar Series championship at Sonoma Raceway (Photo by: Chris Jones for IndyCar Media)
Scott Dixon celebrates with team mates after winning the GoPro Grand Prix of Sonoma and clinching the 2015 Verizon IndyCar Series championship at Sonoma Raceway (Photo by: Chris Jones for IndyCar Media)
Scott Dixon celebrates with Chip Ganassi after winning the GoPro Grand Prix of Sonoma and clinching the 2015 Verizon IndyCar Series championship at Sonoma Raceway (Photo by: Chris Jones for IndyCar Media)
Scott Dixon celebrates after winning the GoPro Grand Prix of Sonoma and clinching the 2015 Verizon IndyCar Series championship at Sonoma Raceway (Photo by: Chris Jones for IndyCar Media)

Start the conversation - Add your comment

Please login or register before adding your comments.

Although the administrators and moderators of this website will attempt to keep all objectionable comments off these pages, it is impossible for us to review all messages. All messages express the views of the poster, and neither Crash Media Group nor Crash.Net will be held responsible for the content of any message. We do not vouch for or warrant the accuracy, completeness or usefulness of any message, and are not responsible for the contents of any message. If you find a message objectionable, please contact us and inform us of the problem or use the [report] function next to the offending post. Any message that does not conform with the policy of this service can be edited or removed with immediate effect.




© 1999 - 2015 Crash Media Group

The total or partial reproduction of text, photographs or illustrations is not permitted in any form.