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View Full Version : Left foot braking


AlexFi
19th December 2006, 12:50 AM
For those not aware here is a little internet guide

http://www.rallyracingnews.com/lfb.html

Thorney
19th December 2006, 01:15 PM
However, on a lot of modern road cars the electronic throttle is linked to the brake pedal switch so if you brake the throttle is cut too.

corsasrisilver
1st May 2007, 11:01 AM
is that the case with the astra vxr

P_D
1st May 2007, 01:00 PM
I will give it a go shortly and let you know Corsasilver...

Jamesinsheffield
31st July 2007, 09:54 PM
I'd really not recommend left foot braking at all- its really really dangerous as the left foot isn't used to applying a little pressure and your likely to end up doing an emergency stop; stalling the engine. Thats only my opinion - but I tried it once and never again!

sparticus
31st July 2007, 10:06 PM
I do it all the time......at the track :P

P_D
1st August 2007, 01:40 AM
Yes it takes practice to master and best not done on the public road. I think the Astra cuts fuel injection under braking so doesnt work anyway...

Pininfarina22
14th August 2007, 01:33 PM
How about heel and toe. I find the pedals are positioned perfectly for toe braking and a squirt on the throttle with your heel as you're changing down. With a bit of practice you can get compleltely seemless downshifts and not get the car pitching about. Must be worth a tenth :-)

sparticus
14th August 2007, 01:52 PM
How about heel and toe. I find the pedals are positioned perfectly for toe braking and a squirt on the throttle with your heel as you're changing down. With a bit of practice you can get compleltely seemless downshifts and not get the car pitching about. Must be worth a tenth :-)Another track favorite of mine.

jimster
16th August 2007, 12:36 AM
Don't u brake with your heel and blip the accelerator with your toe? :oops:

LG_Vxr
28th October 2007, 07:17 PM
Dont think so, think you rotate your foot from pedal to pedal with heel achored on the floor, sparticus yours is automatic though isnt it?

I think that left foot braking belongs only on the race track or on 'clutchless' cars. I tried it on my dads 996 turbo at castle coombe and found that I had no judgement as to how hard to brake, maybe practise makes perfect

stevenandalex
28th October 2007, 08:25 PM
However, on a lot of modern road cars the electronic throttle is linked to the brake pedal switch so if you brake the throttle is cut too.
Can a remap turn this function off?

ads_green
31st October 2007, 12:19 PM
Heel n toe - with modern cars with a "clutch - brake - throttle" pedal layout then the convention is toe on the brake and heel on the throttle. The only reason is that for most people the toe allows more precise brake control when threshold braking where as the throttle needs only a general "blip".

Some cars are perfect for heel n toe so you don't actually need to rotate your right foot much (if at all). I used to use just the outstep of my foot when I had an elise.

Heel n toe is used on corner entry but Left foot braking is to control the rotation of the car early to mid corner. On corner exit you just want the throttle down (assuming you've done everything else right!)

Assuming a rear wheel drive car, if you whilst you are braking just before the apex you can press throttle to increase the car's rotation (oversteer). Conversly, pressing the brake hard can actually induce understeer by causing the front wheels to lose traction in relation to the rears (the engine power can overpower the rear brakes).

However you can very easily end up in a gravel trap (if you are lucky) or a ditch (if not so lucky). For 99% of drivers their left foot is simply not sensitive enough to modulate the brake pedal.

You can combine left foot braking with heel n toe - you start off with braking with the right foot and left on the clutch blipping the throttle with the heel of the right foot. All this is done in a straight line. Once all the downshifts are complete, your left foot is idle waiting for when you exit the corner and use the clutch to change up. So *whilst* maintaining maximum threshold braking you slip the left foot behind the clutch and slide it onto the brake whilst sliding the right foot off. Now you're free to use left foot braking to trail brake into the corner with the throttle used to help control the car's attitude. The final bonus is that once all the braking is complete you can transistion from braking to power seamlessly and not with any upset to the car's balance.

If you see this in action under real race conditions it looks like the driver is tap dancing on the pedals - it's all done in the blink of an eye. I'd say to people to try and do it with the car stationary just to show how hard it is but really really don't do it on the road as you can very easily end up in a mess pressing the wrong pedal or getting a foot stuck. Even done perfectly on track you would be happy if it gained you a tenth over heel n toe only.

There's a great driving instruction DVD by Andy Walsh from carlimits.co.uk that shows how it should be done.

stevenandalex
21st November 2007, 06:18 PM
Just to let you know you can left foot brake an astra vxr and it does not kill the throttle........=P~

Joe__vxr
29th April 2008, 04:20 PM
I did this a few years ago in my old car (clio) and i stalled it! :rolleyes:

Kieran23
29th April 2008, 04:24 PM
I did this a few years ago in my old car (clio) and i stalled it! :rolleyes:

How slow was you going? You dont left foot brake at low speed.

stevenandalex
29th April 2008, 05:06 PM
How slow was you going? You dont left foot brake at low speed.

It is good to practice at low speed first though.;)

AstonVauxhall
1st May 2008, 12:36 PM
I always go by this - left foot braking unless you're in a Formula 1 car is ideally used after heel/toe action to get the front end to dip down ever so slightly more so you have more grip on front end for steering.

You just have to pay attention to the rear just after this though.

tjay
1st May 2008, 04:44 PM
I always go by this - left foot braking unless you're in a Formula 1 car is ideally used after heel/toe action to get the front end to dip down ever so slightly more so you have more grip on front end for steering.

You just have to pay attention to the rear just after this though.


lol.I always pay attention to the rear.best view point imo.

sniktawdarb
20th September 2008, 10:18 AM
I'm gonna be captain obvious here and say that a good way to practise left foot braking is in karts. Just go out on a track and muck around with the brakes all sessions, trail braking etc. First time you try left foot braking in a road car you're likely to lock up the tyres (if no abs), and if you're heading into a corner, this could be dangerous.

Karts are a good, cheap way for practising most sides of race craft.