Noahs944

951and944S

Lol, whoever said that left foot braking doen't apply to RWD is either a noob or slow....

I use it on approach after gear select, entry, mid corner for speed carry correction and even on exit if I think my trajectory is going to carry me wide enough to drop a wheel...., most of the time coupled with wide open throttle at the same time....

When I used to race, there's a several turn complex at Circuit Grand Bayou (No Problem Raceway) known as 'The Peanut' that I drove flat throttle with only brakes as speed and yaw control.

Beginning might be slow, and there's rarely a view because of camera angle, but watch from 10.00 minute my son's foot work at Barber a few weeks ago....., heat win and track record.


T

951and944S

BTW - easy to see with the green shoes.....

T

joseph mitro

agreed. I'm far from an accomplished racer but I have been LFBing for years; even on the street now a days I will use my left foot

Noahs944

Yes. Wicked driving and I see lots of LFB working nicely. Can you explain "yaw control"?

Noahs944

Actually, the people who said that to me are neither... they are in fact very GOOD drivers! One even teaches rally driving!
But they race in FWD and 4WD and I suspect that they haven't put in the time to develop a feel for it in RWD. Maybe because of how they know it to work in FWD, they can't wrap their heads around it working any other way). I can't figure it out, but personally any other way is backwards. I was disappointed because I was hoping they could add to my LFB driving development.
I'm a noob though in the racing community. And I won't lose sleep over others not seeing the gains. But I have shown my findings (in my 944 on tarmac and gravel) to a much better driver than I, and he saw the merit & now uses it all the time.

LFB isn't without flaws though. It wears out brakes faster and uses more fuel consumption (I find), but that's a small price to pay

951and944S

Stab or increase from already applied brake pressure to make the rear of the car step out in a direction that points the front to where you want the car to go.

It's kind of what you don't want to happen when braking while turning, too far and it cause you to spin, just right and it gets you on the gas earlier than the person still with full traction and their car in roll.

T

Noahs944

Okay...so this be what some refer to as like a "rudder effect" with LFB, but the technical term.
Cool T.
Thanks!

joseph mitro

i suspect it is simply individual preference and how they learned. I've heard that even some F1 drivers don't LFB

951and944S

Yeah, yaw, probably an aircraft term but I think that's what Porsche stability management refers to it as in the later electronic aid cars.

Was trying to find a video at our local track from my son's camera with view of the rear of the gray car in my avatar......but the laps that he was ever actually behind me are few and far between....

T

951and944S

That's right....I remember clearly that when they paired at Ferrari, Rubens Barrichello tried the switch when teamed with Michael Schumacher but he never got the hang of it and went back to his learned style.
For me, the benefit is that I never let off the throttle, so when next to a competitor, the instant I let off the brake, the car lunges forward and you gain an advantage.
Sometimes a a fender length is all you need for him to concede a corner.

If you know from data that your max speed ever through a turn is 91 mph and you enter at 94, it's much easier to keep wide open throttle and stab the brake.
It's also is a much quicker speed adjustment than feathering off the throttle.

That said, while he eventually learned and switched, my son is much smoother on all inputs than me.
Around a 180 degree turn, I might stab at the gas from 3/4 to full 8-10 times where he carries more consistent speed and feeds throttle one time, from 5/8 to full.

While the left foot braking made him a lot faster, the parts of the track where I was faster disappeared.
It was around this time that I decided to just build and work on his cars be just in a support role.

T

Noahs944

I'm anxious to see what its like going from soft stock suspension with Sachs to lowered 1.25" and 250 coils/28 T Bars.

Noahs944

Sure, that makes sense!

Noahs944

One of the techniques that compliments LFB is clutchess shifting. I tried it one afternoon in my car and my god it was pretty incredible!
It could be used to upshift or downshift without needing to move your left foot from the hovering the brake pedal. Just blipping the throttle to rev match.
I'm told this will destroy a 944 tranny because it destroys the syncros.
The racing gear boxes that were designed for this type of shifting are called "dog box"... I think?

fasteddie313

I have the G31 dogleg box and I'm pretty sure that their weakness is being destroyed by this easier..
You have to rev match with the Porsche transmissions more if you want them to last long, the synchronizers wear out trying to sync the entire driveshaft more easily if you make them work hard all the time (not rev matching)..
When downshifting you should doubleclutch.. Clutch out of high gear-clutch out rev up- clutch in select lower gear-clutch out, to do most all of the syncro's job for it..
Shift it down like a tractor, I have been to a couple CDL schools so I am a bit good at it..

Upshifting the syncros are decent, just shift slow with a lighter hand, don't pull hard into the next gear and give the driveshaft a second to slow down..

But, the G31 is a real Porsche trans, so take that you "924s aren't a real Porsche" while shifting an audi box guys..
The G31 is also the strongest transaxle box, can take huge power, and has the awesome dogleg racing shift pattern, which is pretty much designed to keep you from moneyshifting and hitting reverse..


As far as left foot breaking, I don't see much practical use for it other than showing off (drifting), diagnostics, and possibly rare times when sideways is faster as in dirt..
Good old heel toe for me, and I am a fan of skipping gears on the way down..

I don't really like clutchless shifting with any syncro'd box, I can't imagine when it would ever be faster but sometimes easier if you can't do the 2 feet 3 pedal thing.. It is the best in tractors though if you know what you are doing but learning to doubleclutch is good for ya too..
Learning to clutchless shift is a good way to learn why and how to properly rev match though..

IDK