Toe heel & left foot Braking
Toe heel & left foot Braking
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ninesixfourrs

Original Poster:

1,085 posts

249 months

Thursday 25th January 2007
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Here for all you Porsche Driving Track Aces All right I know it's not a Porsche but the old Geezers got something to do with Porsches nowdays antways have a look at this if you haven't already seen it and if you have it's gotta be worth another look you might just be able to pick up some of the old geezers left foot braking and toe heel technique [url]http://video.google.co.uk/videoplay?d[/url]

hartech

1,929 posts

247 months

Thursday 25th January 2007
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I may well be repeating myself here but I used to own a sportomatic 4 speed 911 many years ago (it was a 2.2 probably mid 1970's) and I often had to drive from Caernarvon to London and back - and just because I had 2 pedals and 2 feet - I taught myself how to brake with my left foot (so I just had one pedal opposite each foot). It took a while but eventually I found it just as sensitive as the right foot.

Now the car had an LSD and I found that as long as I kept my throttle pedal fixed - if I was going round a corner too fast (to keep the balance of the car exactly the same) - all I had to do was feed in a little left foot brake to always safely bring the car back on line - even on snow.

It was so safe that I could throw the car into almost any corner wirh abandon (even in the wet) and still the technique corrected any problems - so in the end it was by far the safest car I had ever driven - in sharp contrast to the reputation it had at the time.

I regularly travelled to North Wales on the A5 and nothing else ever got near my car!

Since then I prefer automatics purely for this reason - but not automatic Porsches because the 911 Sportomatic dropped to 3 speeds (and the 924, and 944 and the 964 and 993 to 4 speeds) and it was not until the Boxster and 996 that we got back to enough automatic gears to make the car perforem well enough again in that mode - in my opinion. If only I had the brains over 30 years ago to realise that the priciple could have been used to develop safer cars - as we have today with PSM etc!

Baz Hartech

speedyellow

2,533 posts

257 months

Thursday 25th January 2007
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When I used to rally, if a new boy was starting to get too fast and too much competition, you'd have a long chat with them about the advantages of left foot braking... they'd try and master it and be off the pace for the rest of the season....

hartech

1,929 posts

247 months

Thursday 25th January 2007
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But I doubt they were trying to drive an auto with left foot braking - a manual is more difficult - there is another pedal in the way and no torque converter to adjust torque to the wheels if the gearing is a little wrong. The sportomatic was a manual gearbox with a gear lever switch that operated the clutch and it had a torque converter - so you could change gear while braking into a corner as well - if you wanted to and power out full throttle just lifting the throttle a bit if the back started going and feeding in a little brake - worked fantastically well - in fact it made the car feel as if it was on rails.

I understand Michael Schumaker uses the technique - and tried your trick on Davis Coulthard a few seasons ago - and it worked - great idea! (I think Kimi may use it as well).

Baz Hartech

kennyboy

641 posts

269 months

Thursday 25th January 2007
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this sounds amazing....come back tiptronic all is forgiven!

who am I kidding, I'd never get the hang of it.

ninesixfourrs

Original Poster:

1,085 posts

249 months

Thursday 25th January 2007
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Reckon the old geezer in the Vid's got it pretty much sussed out, still should be an amusing next trackday eh!! biglaugh

rude-boy

22,227 posts

263 months

Thursday 25th January 2007
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After many attempts and smacking my nose on the steering wheel too many times to remember i have given up on learning the art of left foot breaking for the moment, but no doubt, like sprouts, will find myself trying again in a few months to see if i can get it.

Heal and toe should be part of every learner driver's ecucation.

hartech

1,929 posts

247 months

Thursday 25th January 2007
quotequote all
The first time you try it you do end up nose on steering wheel but you know it doesn't take long to get the right feel. Although you could argue that toe and heel is the same - the most important influence on the handling was not the braking but the completely steady throttle opening while braking and that would be very difficult using the same foot.

If I can master it - anyone can believe me - but having an auto helps beacause you learn by braking everywhere just to stop or slow doen the car and this gives you the time to master it when it is not so vital.

Baz Hartech

shoestring7

6,194 posts

276 months

Thursday 25th January 2007
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rude-boy said:
After many attempts and smacking my nose on the steering wheel too many times to remember i have given up on learning the art of left foot breaking for the moment, but no doubt, like sprouts, will find myself trying again in a few months to see if i can get it.


The trick is to sqeeeeeeze the brake pedal, not push it. Also try it when the car isn't moving but with the engine running. Or rent/borrow/steal an auto as Baz suggests.

I was taught by the great Pentti Arikkala in a twin contolled Lancia Thema. What a hoot that day was driving

SS7

zcacogp

11,239 posts

274 months

Thursday 25th January 2007
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shoestring7 said:
I was taught by the great Pentti Arikkala
You jammy, jammy, jammy sod! How did you get that?


Oli.

rude-boy

22,227 posts

263 months

Thursday 25th January 2007
quotequote all
shoestring7 said:


The trick is to sqeeeeeeze the brake pedal, not push it. Also try it when the car isn't moving but with the engine running. Or rent/borrow/steal an auto as Baz suggests.

I was taught by the great Pentti Arikkala in a twin contolled Lancia Thema. What a hoot that day was driving

SS7


To be fair I did get part of the way there when I was trying it in the Audi (which was an auto) and have tried a few times in the Boxster. The problem is I can do it no worries when driving in traffic/granny speeds but when things start getting serious (and it would be of help other than to rest the old pins on a long srive )I always seem to aply too much pressure.

IIRC Penti and Vatanan (sp) both run ice/snow driving schools, their not cheap but then you wouldn't expect it to be. A chap I know spent a number of days in Sweeden a fair few years ago as a guest of SAAB messing about on ice with Erik Carrlsson (sp).

bund

2,624 posts

251 months

Thursday 25th January 2007
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I'm amazed when watching the vids of the old rally class that even more watches wasnt killed. They are fruit cakes......

lonman

262 posts

289 months

Thursday 25th January 2007
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zcacogp said:
shoestring7 said:
I was taught by the great Pentti Arikkala
You jammy, jammy, jammy sod! How did you get that?


Oli.



So was I.

He used to live next to my old MD in Bray. Not the cheapest way to learn, but the best. He was teaching a lot of the current F1 drivers too (would not tell me who)

He taught the the Finnish Flick for free too!!


Edited by lonman on Thursday 25th January 15:43

slippydiff

16,426 posts

253 months

Thursday 25th January 2007
quotequote all
rude-boy said:
The problem is I can do it no worries when driving in traffic/granny speeds but when things start getting serious


I spun a Cavalier SRI on the A4141 between Warwick and Knowle many years ago.
What I thought was a fast (75-80mph) left hand sweeper was in fact a nasty tightening job.
As I barrelled into it (left foot braking) at the thick end of 80mph I realised just how much it did indeed tighten yikes

In these circumstances DO NOT LIFT OFF THE THROTTLE !!!

No prizes for guessing what I did then.............

Cue lift off oversteer of mammouth proportions, and a soundtrack which sounded like Starsky and Hutch arriving to meet Huggy Bear at the local strip joint hehe

Realising I'd mistaken ambition for ability smokin I buried my foot on the brake pedal and locked all four wheels solid.
The ensuing broadside slide down the road brought the car to halt rather rapidly and without hitting anything

When the tyre smoke had cleared, the silence (I'd stalled it) and sense of relief was overpowering.

I drove off somewhat chastened and have learnt IF you must left foot brake, always keep at least a balanced throttle......

Pugsey

5,821 posts

244 months

Thursday 25th January 2007
quotequote all
lonman said:
zcacogp said:
shoestring7 said:
I was taught by the great Pentti Arikkala
You jammy, jammy, jammy sod! How did you get that?


Oli.



So was I.

He used to live next to my old MD in Bray. Not the cheapest way to learn, but the best. He was teaching a lot of the current F1 drivers too (would not tell me who)

He taught the the Finnish Flick for free too!!


Edited by lonman on Thursday 25th January 15:43
I've fond memories of one of those days too. We were being shown how a brief touch of left foot brake against the throttle can get you through a slalom course quicker. A then up and coming and very loudmouthed journo had noticed that the brake lights seemed to be on quite a long time and criticised the great man quite sarcily for using the brakes for much longer than he was teaching. There was a pause then Pentti quietly explained that he was merely taking up any slack in the system but "please to show me your way if it is quicker sir". Said journo is quite well known now and still spouts crap.



Edited by Pugsey on Thursday 25th January 17:17

DanH

12,287 posts

290 months

Thursday 25th January 2007
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What is the tapping of the accelerator for? I know Senna used to do this too, and it was put down to coming from karting. Walter seems to be doing it too - is it to keep the car on boost?

Pugsey

5,821 posts

244 months

Thursday 25th January 2007
quotequote all
DanH said:

What is the tapping of the accelerator for? I know Senna used to do this too, and it was put down to coming from karting. Walter seems to be doing it too - is it to keep the car on boost?
? I think a fair bit of it may be fractional feathering of the throttle each time he feels the wheels going light over bumps - what looks fairly violent in terms of feet movements are actually massively sensitive. I bet you do it in your RS - full beans out of a corner and just easing the tiniest fraction for a split second when you sense the revs about to flare due to damp/bump or what ever. Good as the MSCs are on my car I could feel that happening a lot today.

nel

4,830 posts

271 months

Thursday 25th January 2007
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Nice little vid. It never ceases to amaze me how the rally drivers can drive at nine tenths when there are death wish candidates standing on the outsides of the curves, or running out for a quick photo of a rally car barreling towards them.

As someone else commented above, it seems remarkable that so few spectators have died over the years - apart from a big one (Portugal springs to mind?) I don't recall too many incidents.

DanH

12,287 posts

290 months

Thursday 25th January 2007
quotequote all
Pugsey said:
DanH said:

What is the tapping of the accelerator for? I know Senna used to do this too, and it was put down to coming from karting. Walter seems to be doing it too - is it to keep the car on boost?
? I think a fair bit of it may be fractional feathering of the throttle each time he feels the wheels going light over bumps - what looks fairly violent in terms of feet movements are actually massively sensitive. I bet you do it in your RS - full beans out of a corner and just easing the tiniest fraction for a split second when you sense the revs about to flare due to damp/bump or what ever. Good as the MSCs are on my car I could feel that happening a lot today.


You give me too much credit

thegoose

8,077 posts

240 months

Thursday 25th January 2007
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I've been learning the race circuits in the Club Championship over the last 2 seasons I've been an avid reader of The Circuit Guide and have started to try left foot braking in some of the places they suggest (my car isn't necessarily going fast enough to need slowing down in all the places they mention). I have to say I do it with caution but it really seems to work well.

A good example is "Barn" at Cadwell Park - after a short spurt you need to lose a little speed for this corner (which is a downhill right) before a blast along the longest straight (a continuation of the downhill for the first half), i.e. getting the power down that bit sooner can have quite an effect on the lap time. A gentle left foot application with a balanced throttle keeps the car stable and means the power (something to do with the "polar moment of interia"?) is already fed in and hence you are accelerating again without delay.

I got class wins both races (including a fastest lap) so it worked for me.

On a related note, my mechanic once suggested fitting an ignition cut-out switch on the gearlever - the idea being to make up-changes without lifting off the gas, but cutting the spark instead. Sounds like it would be very hard to get used to, but it certainly sounds like there'd be an advantage in not waiting for everything to get moving along again.