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Driving technique- 90 degree turn

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Old 08-14-2014, 07:28 PM
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phil996cab99
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Default Driving technique- 90 degree turn

Let's say you're way out in the countryside, no traffic whatsoever, on a 45mph 2-lane road. You're going to turn right onto another similar road (2-lane) no stop sign so you're free to drive how you wish. You're okay to push it hard and have some fun.

1. What's your technique?
2. What's the maximum speed you can take this turn?
3. What's the sequence going into the turn? What speed? What gear? Are you still on the brake when you start to turn?
4. What's the sequence coming out of the turn? What gear(s), rpm(s), shift point(s)?

Thanks. As for me, it's been fun just learning trial-and-error, but there comes a point you should learn how to do it right. I don't have budget for driving school, and I'm not finding the videos showing this.
Old 08-14-2014, 07:42 PM
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LexVan
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Join you local PCA. And autocross. It won't brake your bank. And will keep you, your car, and the public safe.
Old 08-14-2014, 07:51 PM
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Dennis C
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+1 for autocross. It's a blast.

Once you've had some fun with autocross, try a DE track day.
Old 08-14-2014, 07:53 PM
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phil996cab99
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I am a PCA member. That was one good move.

Looks like I need to look into autocross. I'd not heard of that.
Old 08-14-2014, 07:55 PM
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LexVan
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Originally Posted by phil996cab99
I am a PCA member. That was one good move.
Now get'erdone.
Old 08-14-2014, 08:24 PM
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RngTrtl
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for me, I heal toe shift into second and accelerate when I hit the apex and let the rear end kick out for the over steer. nothing but smiles.
Old 08-14-2014, 08:51 PM
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5CHN3LL
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Old 08-14-2014, 08:53 PM
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5CHN3LL
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Taking the green line, I'd be done with braking and have heel-toed from third into second at the turn-in point. I'd be feeding throttle in lightly until a tick after the apex, and then I'd be feeding power in hard as the wheel unwound.

Hypothetically, of course, since this is a 2-lane road and I'd be spending more time on the wrong side than the right side.

I would also have turned off PSM, since it would have interfered with my turn-in due to my suspension setup. However, I'd have to be a little more careful tracking out, as with PSM off there's always a chance I'd suddenly be in a ditch staring at the corner I just drove out of.
Old 08-14-2014, 08:59 PM
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pfbz
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Originally Posted by phil996cab99
Let's say you're way out in the countryside, no traffic whatsoever, on a 45mph 2-lane road. You're going to turn right onto another similar road (2-lane) no stop sign so you're free to drive how you wish. You're okay to push it hard and have some fun.

1. What's your technique?
2. What's the maximum speed you can take this turn?
3. What's the sequence going into the turn? What speed? What gear? Are you still on the brake when you start to turn?
4. What's the sequence coming out of the turn? What gear(s), rpm(s), shift point(s)?

Thanks. As for me, it's been fun just learning trial-and-error, but there comes a point you should learn how to do it right. I don't have budget for driving school, and I'm not finding the videos showing this.
I don't recommend practicing your cornering technique on open roads, let alone a four-way intersection, but some general advice to get you started

1. Slow in = fast out.
2. Do your braking and downshifting primarily in a straight line before the corner, start applying power help rotate the car through the corner and offset understeer.
3. Late apex corners, though on the street corner visibility is more important than the fast line.
4. Smooth = fast.

Good braking technique and line selection is actually quite a bit more important that perfectly blipping heel and toe downshifts, though it won't make you feel quite as joe racer.

Again... please don't practice this on a public four-way intersection. If some truck just sloshed a bit of diesel or antifreeze on the road surface, the corner that you railed 99 times previously will put you in a spin faster than you can say PSM.



Old 08-14-2014, 09:03 PM
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5CHN3LL
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Note that many Porsche drivers will instead use the following technique:

* Coast slowly up to the turn.
* Come to a complete stop at the turn-in point, although no stop sign is present.
* Relish how wonderful Air Supply sounds on MOST-powered radio.
* Forgetting to downshift, attempt to accelerate from 0 to 35 in 3rd gear.
* When the car jerks repeatedly due to poor gear selection, driver sloshes fat-free soy latte into lap, pulls off to the right side of the road, and uses one of the many brand new microfiber towels in the frunk stored there just for such emergencies.
* After obsessing for several minutes about "lugging" the car, driver calls a towing company and arranges for a flatbed tow to Flat6.
Old 08-14-2014, 09:06 PM
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phil996cab99
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Originally Posted by RngTrtl
for me, I heal toe shift into second and accelerate when I hit the apex and let the rear end kick out for the over steer. nothing but smiles.
Yes, I want to feel that over steer (for fun), but for some reason my front tires are the only thing sliding (as I'm accelerating out).
They might be overinflated, but I've already reduced them down to 36 front, 38 rear. BF Goodrich g-force. Not the rails feel of the Pirelli's, but they look cool, and they have a big bead to protect against curb rash.
Old 08-14-2014, 09:12 PM
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5CHN3LL
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If you are pushing your tires through the corner, time's being wasted. Understeer means the car isn't going the direction you want it to. Slow down enough to get the car pointed in the right direction.
Old 08-14-2014, 09:13 PM
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5CHN3LL
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Please, for the love of God, find yourself a stadium parking lot and practice there instead of a 2-lane highway.
Old 08-14-2014, 09:18 PM
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pfbz
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Originally Posted by phil996cab99
Yes, I want to feel that over steer (for fun), but for some reason my front tires are the only thing sliding (as I'm accelerating out).
That is classic understeer. And most 911's are set up with significant understeer. It's safer for most drivers.
  • Go into the corner slower, then put more power down into the corner. If you go into a corner too hot, your just going to slide the front and more power won't help. Once the front is sliding, your done (unless the rear is sliding too).
  • Change alignment. Going from standard 911 alignment specs to a GT3 alignment specs made a huge difference.
  • Next time you get new tires, change your front/rear tire balance. Wider in front, narrower in back, or both. Too much rear tire = push.
  • Go into the corner slower. Worth repeating as it's the #1 mistake drivers make when they are trying to go 'fast'.
Old 08-14-2014, 09:23 PM
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Originally Posted by phil996cab99
Let's say you're way out in the countryside, no traffic whatsoever, on a 45mph 2-lane road. You're going to turn right onto another similar road (2-lane) no stop sign so you're free to drive how you wish. You're okay to push it hard and have some fun.

1. What's your technique?
2. What's the maximum speed you can take this turn?
3. What's the sequence going into the turn? What speed? What gear? Are you still on the brake when you start to turn?
4. What's the sequence coming out of the turn? What gear(s), rpm(s), shift point(s)?

Thanks. As for me, it's been fun just learning trial-and-error, but there comes a point you should learn how to do it right. I don't have budget for driving school, and I'm not finding the videos showing this.
If you own a tire shop shouldn't be no problem, I do autocross and drift but not with the Porsche, when I do autocross for my tires I use Toyo proxes performs good on the street and the track without affecting my category but when we talk about drifting tires go crazy fast!!!!!


After 2 runs of drifting!!!!




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