05-22-2018, 12:16 PM | #211 |
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Some 3rd gear action at Crows Landing. All twins belong in STX.
[ame]https://www.youtube.com/watch?v=WBeJUrX0-aA[/ame] |
05-22-2018, 12:43 PM | #212 |
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I was thinking the same thing......
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05-22-2018, 12:59 PM | #213 | |
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The start and finish were alongside each other maybe they were trying to keep speeds down in that section? There is a 2 day event the first week of June before the tour, we'll see what kind of course the CNY region designs. I'm not sure who is designing the course for the tour. |
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05-22-2018, 03:08 PM | #214 | |
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05-22-2018, 04:23 PM | #215 |
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05-22-2018, 05:15 PM | #216 | |
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I will be designing the Evo School/ Practice course for the tour. Simmons
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05-23-2018, 10:11 PM | #217 |
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The difference between a pro and an ok autocrosser
To be clear, I'm not the pro, my friend is. To give a bit of background: he used to pro-am rally back in the 80's and 90's, and used to go to national auto-x events, but does it only for fun locally now. He can consistently pax in the top 5 or 10 in a pretty deep region. And that's on Federals or Nexens, not RE-71s or Rivals. We have a few former national champs here, and several others who have finished in the top 3 - 5 at Nats in their classes multiple years. He also, more than anyone else I know, can hop into a car and extract close to its full potential on his first run.
I've co-driven with him several times in my car over the years, and I had him take a couple of runs this weekend at a PCA event. I think it's finally dawned on me what he does differently from me: 1) He slows early for corners and never stands on the brakes 2) He takes a wide enough arc and turns in early so that he can position for corner exit early 3) He gets very tight on the apex cone 4) He is aggressive on the throttle and stays on it starting at the apex cone. He is essentially making the straights longer. I notice that I wait until it's straighter to get on the gas, and breathe the throttle in a few spots where he stays on it. He is trusting the tires to hold where I chicken out. Here are videos for comparison. The pro: [ame]https://www.youtube.com/watch?v=aC6lPElAGoI[/ame] The 'okay' autocrosser: [ame]https://www.youtube.com/watch?v=CaJN39zeaGw[/ame] Event results: http://www.peachstatepca.org/Results...oss/05-20-2018 I find it encouraging that my car can raw-time two pretty well driven 991 GT3s. Of course on a more open track, it wouldn't stand a chance. I found it very funny that my friend kept saying how I need a bigger front sway bar during his run. I find the car plenty stiff, but he thinks I need a bigger bar, stiffer front springs, or both. I have MCS SAs with 500 F 450 R springs, and a TRD front sway. Anyway, I hope these videos and my observations will help other 'okay' autocrossers out there attack the course better. I welcome observations and comments from other pro-level and okay autocrossers here. |
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05-24-2018, 02:01 PM | #218 | |
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05-24-2018, 03:15 PM | #219 | |
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That's the one I was thinking of getting at some point. I've tried the 25mm Hotchkis and found it way too stiff. The TRD is just under 21 mm iirc, so I figured the 22 mm would be a good middle ground. I didn't find it funny because I didn't believe him -- I do think the car would be more settled at the rear with a bigger bar. What I found funny is that he's able to talk while driving so fast! |
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05-24-2018, 03:39 PM | #220 |
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So legit question here. Why does everyone and their mother in autoX wants their car to understeer to hell and back? Wouldnt a car that rotates easier be a lot more enjoyable to drive (and possibly quicker)? Those videos posted there. That car has very much chronic understeer (not once did it do anything other than push, push, push), yet he suggest more front bar and/or stiffer springs? Im not questionning anyone's ability here, I have never autocrossed and im just curious.
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05-24-2018, 03:59 PM | #221 | |
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Pro-guy was complaining about oversteer. You can hear it in his throttle input and see some correction. It's not crazy bad but it's there. |
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05-24-2018, 04:08 PM | #222 | |
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05-24-2018, 04:15 PM | #223 | |
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Here's how my pro friend has explained it: you don't want a car that rotates too easily when driven under the limit, because at the limit it will be too difficult to control and you will have to correct or lift and scrub speed. You want a car that is somewhat pushy under the limit, because as you push harder and approach the real limits of the car, it will become more neutral. Keep in mind that, for him, pushing harder does not happen in the braking and turn-in phase of the corner. He never brakes late and overslows the car. Pushing harder for him is the exit phase of the corner -- getting back on the gas right at the apex. He maximizes the acceleration zones, and stays on the gas as much as possible, so the car's natural tendency at the limit in such circumstances is for the rear to want to rotate anyway. |
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05-24-2018, 04:26 PM | #224 | |
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Secondly, AutoX is super tight and really hard to slide around. At least in my area they are really really tight, takes some really fast inputs if your gonna drift those tiny turns. I do over all agree with you tho... Straight steering wheel turns are where it's at.... or should be where it's at at least because obviously.. this is ridiculously hard to do in practice.
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