Single or double apex - which is quicker?

#apex #racinglines
On tracks such as Philip Island, Winton and Broadford many drivers will swing out as far as possible for each corner, then arc back in for a single apex. But the classic out-in-out line isn't always quickest, and in this video, I explain why.
Post questions as comments!
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[@hoboryan3455]

So clear and perfectly explained! I never knew what people meant by "double apex." I always thought they meant to turns back to back quickly :P

[@Solo6amers]

Thanks for explaining why the double apex will be faster. I will need to remember this for PI in Sept.

[@L2SFBC]

Glad it was helpful! Yes, you'll definitely catch people up with the double-apex line, give it a try. Just be brave through Turn 1, let the car run out nice and wide...always exciting!

[@patrickvanrinsvelt4466]

Got one of those at the beginning of the long backstretch at McLaren park in Taupo, NZ. I have never gotten it right.

[@PapaDutch]

Excellent analysis and presentation!

[@L2SFBC]

Glad it was helpful! Would appreciate a share :-)

[@Malc664]

Very interesting Robert. Being a Formula 1 fan I learnt a lot on how to be fast without the high downforce of F1 cars. Thanks mate.

[@L2SFBC]

Thanks, would appreciate a share - I looked and didn't see any analysis of this sort so thought I'd do it. Yes aero changes the equation but I'm not sure how - it'd certainly make the vehicles describing a circle more equal. But the F1 guys don't need to watch my channel, and the people that do don't run much if any aero so I'll leave that side of things out!

[@BenMitro]

I wish you would stop sharing all my racetrack secrets Robert! (A joke ofcourse, thanks for explaining and the huge amount of work to prep for this video).

[@L2SFBC]

My pleasure!

[@thebenstyles]

Nice work Robert - spot on

[@L2SFBC]

Thank you kindly Ben, would appreciate a share...although I see from your in-car you are already taking the double-apex line :-)

[@thebenstyles]

@@L2SFBC cool - just shared to my track group

[@L2SFBC]

@@thebenstyles thanks!

[@drmarkintexas-400]

🏆🏆🏆👍🇺🇲🙏. Thank you for sharing.

[@L2SFBC]

Thanks for watching!

[@LoveLikeaHurricane]

So what I'm understanding is, if a corner looks super drawn out like a circle, stick to the inside, and do double apex if applicable. A question I have is, what would be the difference in time for someone who just hugs the inside line for those corners that could be double apex? which one would be faster? I'm assuming double apex because you mention that the choice that has less time steering would be the preferreed choice

[@L2SFBC]

Roughly yes and there's so many variables can't answer sorry

[@CraigMullins1]

What app on the phone are you using? 6:02

[@L2SFBC]

Racechrono Pro

[@Jaibee27]

Why is the double apex .24 seconds slower at 7:00 ?

[@L2SFBC]

136km/h is 37 metres a second, the other way is 9m longer = 0.24 seconds of time. Hence, shorter path wins...assuming the same speed can be maintained. 0.24s is a lot of time, but it's barely two car lengths. This shows how important a short path is, if nothing else important is compromised and that is the trick!

[@Jaibee27]

I think I understand. But the yellow text is the shorter double apex distance, but at 7:00 the yellow text has longer duration being .24 greater than the red text. The other corner at 13:00 shows the yellow text having less duration than the red text. The one at 7:00 is a typo, yes? The yellow is 18.24 and the red is 18.00 indicating the longer red line is quicker than the shorter yellow line.