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-   -   I have two questions. 1-I seem to be sliding a bit in the front too much? (http://forums.pelicanparts.com/porsche-911-technical-forum/357339-i-have-two-questions-1-i-seem-sliding-bit-front-too-much.html)

FinallyGotOne 07-15-2007 03:01 PM

I have two questions. 1-I seem to be sliding a bit in the front too much?
 
got a 911SC '79. I went to make a quick U-turn, and I almost "pushed" into the curb on the other side of the street. I had to back off quite a bit to complete the "U". Occasionally trying to make my light I'll kinda slide a bit onto the main road also. I think that is pretty normal, these 911's slide around pretty good, but does it seem strange that my u-turn was not stickier?

Second question:
What do you like best about driving your 911"s? Around town driving, driving around cornering roads, hiway driving? I think I am liking hiway driving right now, from the top of the on-ramps I can get out to the fast lane over 65mph before putting it into 4th gear! A lotta fun!! I know you guys with the turbos can scream past me, but my lil normally aspirated 3.0 get up and goes pretty good to me. :)

http://forums.pelicanparts.com/uploa...1184540391.jpg http://forums.pelicanparts.com/uploa...1184540451.jpg

brendon 07-15-2007 03:04 PM

I like turning!! Acceleration feels good, but turning feels better. And accelerating out of a turn...

At low speed mine seems to understeer a bit, higher speeds it starts to oversteer.

Paulporsche 07-16-2007 02:22 PM

There are many items that can affect this. You should do a search . Tires, pressures, shocks, ride height, corner balancing, & torsion bars all can be adjusted or replaced to get the car to handle the way you want. Road surface, temps and road camberalso play a part. As Brendon says, though, the basic characteristic of the car is low speed corner push and high speed corner oversteer.

Twisty on/off ramps seem to provide the best opportunity for exercising the handling (other than the track).

Wil Ferch 07-16-2007 03:16 PM

Nobody will understand these cars unless you get them on a track. I don't mean you have to go fender-to-fender racing.. I mean a Driver's Ed ( DE)event so that the car handles and turns in ways you think are humanly impossible. An experienced instructor will usually show you this....remarkable.

Spoils you for any street driving...at least as it pertains to any kind of charismatic giggles the car will give you thereafter....

- Wil

930LDR 07-16-2007 04:41 PM

Quote:

Originally posted by Wil Ferch
Nobody will understand these cars unless you get them on a track. I don't mean you have to go fender-to-fender racing.. I mean a Driver's Ed ( DE)event so that the car handles and turns in ways you think are humanly impossible. An experienced instructor will usually show you this....remarkable.

Spoils you for any street driving...at least as it pertains to any kind of charismatic giggles the car will give you thereafter....

- Wil


I am with Wil. One of the most rewarding moments with my 930 occurred at the track late last season while giving another, well regarded and really fast, instructor a ride. His words sum up the essence of the 911 'Holy $hit, I didn't know a car could do that!'

Zeke 07-16-2007 05:53 PM

Do you have a limited slip diff? slow speed turns can be affected.

Quicksilver 07-16-2007 06:47 PM

Your u-turn describes the normal action of a fairly balanced car. If you are on the power the weight shifts to the rear and the rear wheels have grip. To turn a sharp u-turn you need to have the front tires stuck to the ground so you need to plant them into the ground. simply letting off the throttle will usually be enough but a touch of brake will really attach the front wheels to the ground.

The only time that adding power to the car will cause it to turn is if you have so much power that you can boil the tires and you have a limited slip differential.

If your region has a drivers training where you can spend some time on the skidpad you will learn enough about this in 20 minutes to make it obvious to you. Driving in a circle while adding and reducing power will teach you a huge quantity about your car.

Eric Coffey 07-16-2007 06:57 PM

Quote:

Originally posted by Quicksilver
Your u-turn describes the normal action of a fairly balanced car. If you are on the power the weight shifts to the rear and the rear wheels have grip. To turn a sharp u-turn you need to have the front tires stuck to the ground so you need to plant them into the ground. simply letting off the throttle will usually be enough but a touch of brake will really attach the front wheels to the ground...
Yep, rear engine + rear wheel drive + lots of lock on the wheel (like for a u-turn) + hard acceleration from a stop (and resultant weight transfer) = extreme understeer (as in: you are going to go straight). :)

ted 07-16-2007 09:29 PM

Quote:

Originally posted by Wil Ferch
Nobody will understand these cars unless you get them on a track. Spoils you for any street driving...at least as it pertains to any kind of charismatic giggles the car will give you thereafter....

- Wil

true.:)
A 180' turn in second gear is common on an AX track.
On the track a slower speed flat to off camber 180' turn creates a nice opportunity to pitch and catch a 911. Basically throttle steer, go in lift the gas let the rear rotate around and catch it with the gas.
Similar to an exaggerated trailing throttle over steer followed by the on gas catch.
You can try it on the street but you'll need to be at the track or in an empty parking lot to get the full effect.

In your case of push I'd say you just got on the gas a couple seconds too early.
After all we basically steer the 911s with the right pedal.
If your car is set up to push you'll need to adapt your driving style for best results.

FinallyGotOne 07-17-2007 08:03 AM

THNAKS EVERYBODY, DEFINITELY GREAT ADVICE AND GREAT READING!! I was stopped from a light so I was unable to lift off on the gas, but now i have something new to try :) I may go out today and just flip a few beeeattches just to try this. Tracking sounds like something I really need to do, but the tracks i heard are either hundred+ miles away in Pueblo or outta state? No Local Denver Colordao tracks-unless someone knows of one ... THNX again, always so helpful here.

naparsei 07-17-2007 02:23 PM

Pueblo, La Junta, Police Grounds. They are building one in Genoa. They might open PPIR again. There's probably more - I'm in NM, not CO.


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