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Slow in, fast out.....

Carrera

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16 May 2003
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Just getting myself mentally prepared for my first track day of this yr on Good Fri, thinking about driving technique etc. When they talk about slow in fast out for 911s, is it any different for any other "normal" car with engine in the front? ie slower in faster out? :?

I've been braking hard before turn in, let go of brake then turn in with kind of 1/2 throttle to maintain speed until apex then press on just past apex, am I doing it right? If so, why was that Golf kept over-taking me as if I was going backward!! :oops:


Migration info. Legacy thread was 25630
 
that's about right.....

braking shifts the weight up front.. ideal on our rear engined cars.... I guess you need to gradually raise you entry & exit speed based on the same principles... until it is that Golf that is going backwards... must really ask Sean what the 'next stage' is !

these electronically controlled cars can make it a 'bit' more idiot proof... but there is no substitute for raw driving... no doubt we can share 'potential' techniques next sunday !

although lets hope it doesn't rain !


Migration info. Legacy thread was 25631
 
Great info copied from Steve Rance another board below

Cheers

Ajit.

As you approch the braking zone in a 911 you lightly press the brake pedal for probably 2/10s of a second to transfer the weight to the front of the car and load up the front wheels. Once loaded you brake harder and progressively keeping the weight over the front wheels - There is also something that you need to do with heal and toe but like I said I won't write a book - So just before turn in we have weight transfer smoothly from the rear to the front so we have lots of front end grip. This needs to be done smoothly or the front springs will 'bounce' the weight back to the rear and you are off big time. Now smoothly turn in and for a fraction on a second keep the brakes on to maximise weight transfer and therefore front end grip. We now have a high speed turn in, the front wheels have done thier job so we come off of the brakes quickly and at the same time start applying power. This transfers the weight to the rear of the car where we now need it. Feed the power gently through the apex and then harder so that you are flat near the exit and hey presto you've just had it all ways, a fast turn in, apex and exit.... Good drivers have been doing this for years in 911's. If you can fire the car into corners like this again and again, you win races. That is why the 911 in all of it's guises is one of the most prolific race winners of all time. It is also why more have also been stuffed into the armco or hedges than most other car. In the hands of a good driver the 911 is an incredible driving tool. Unfortunately it can also be a lethal weapon in the wrong hands.

Ok, the 911 drivers here will know that the car is prone to trigger the ABS on the front wheels during heavy braking even on the very grippy cup tyres. The stiffer and more agressive you set up ( in terms of spring rate, shock rate and neg camber) the more pronounced the problem, the baking zone is extended as grip is lost, the weight transfers back off of the front axle and understeer on turn in will follow. This problem is compounded if the driver doesn't load up the front of the car by an initial relatively light application of the brake. To get around this the driver should bang in heal and toe downchanges as soon as the car is settled under braking and as soon as your engine revs allow. There is substantial amount of engine braking available during this time (especially if the car is fitted with sticky tires) in addition to be normal braking process. This process helps to further load up the nose prior to turn in. This 'double' braking techinque techinque is employed by some front running Carrera cup drivers, especially Richard Westbrook who uses this techinque to very good effect.






Migration info. Legacy thread was 25639
 
Thanks, that's a great write up, concise and down to the point. Plenty for me to practice and try next wk. Watch out everybody, I'll be going fast in and fast out....even GT£/RSs will stand no chance... :oops:


Migration info. Legacy thread was 25654
 
Mick

Yeah Yeah.

The sercret of a 911 is to finish your breaking before the run in, and get back on the power and gradually feed it in. The other secret in a 911 is never give it full acceleration until the wheel is almost straight.

Also when you brake brake gently in the first instance so the weight slowly moves forward and the front tyres dig in and then brake harder.

Unfortunetly Richard Westbrrok won;t be there as he is racing in the supercup at the Bahrain GP, but he will be at the Bedford evenings that at Porsche only and <30 cars throughout the year so if you want instruction of a pro, he is the one.

Also Steve Rance is a pro driver who attends every Fastrak event and he is on hand to help out. If you want an intro let me know and I will help out.



Cheers Sean


Migration info. Legacy thread was 25664
 

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