Walter Rohl
Originally Posted by RennTechV12
What's up with the throttle and brake at the same time with no clutch?

1) It does help keep the turbos spooled, which was particularly important in the days of really laggy turbocharged engines.
2) It allows you to manage weight transfer better (you can apply power to the rear wheels at the same time as you're shifting weight forward via braking).
3) It smooths the transition from braking to accelerating early/mid-corner. In traditional brake-or-gas, there's some drivetrain slack that develops when you're braking (off the gas), which gets taken up when you transition to throttle. This can cause a small lurch when you transition. At street speeds, this is not a problem. In limit-cornering, though, it's enough to upset the balance of the car. with LFB, you can smoothly let off the brakes and apply the gas without the clunk.
There was a video a while back that showed telemetry plots of Schumacher versus (IIRC) Eddie Irvine in some corners. Long story short, Schumi LFBs, and is quicker than Irvine because of it.
Ahhhhhhhhhhh yes the Gruppe B Sport Quattro... I had a chance to see those cars at the Monte Carlo Rallye in 1986 , I was a kid at the time and from then on was hooked on Audi.... Talk about acceleration 5 cylinder 2.1 liter Audi engine producing 750+ HP ..
I remember there being a story that a Gruppe B Audi Sport Quattro could out accelerate a F1 car in the day and the Audi was on dirt.......
Walter is truly one the most talented drivers ever.......He is probably one of the best Rallye Drivers ever and he kicked *** in Trans Am - DTC and many other road racing series.
That video clip is on an old ESPN video from the 80's called Secrets of Speed...
The left foot braking was a technique developed by rallye drivers to do a few things:
1. To turn the vehicle at speed._ see video
2. Cars in the 80's had huge amounts of turbo lag so in order to keep the boost up the driver would keep the throttle open while braking, once he or she did what they needed to do, he would take his foot of the brake and the car would be on full boost and accelerate like a rocket... ( today we have things like anti lag systems to eliminate the need for this )
3. Audi even went on to develop the a clutch system that was integrated into the shifter and the driver would engage the clutch with his hand while shifting- ( pre sequential gear box era)
4. If you see this video you can hear the turbo chargers at full boost and as the driver applies the brake you can here the turbo chargers go nuts as they are on and off the brake ...... Its amazing......
To hear a car like this in real life is amazing......................
I remember there being a story that a Gruppe B Audi Sport Quattro could out accelerate a F1 car in the day and the Audi was on dirt.......
Walter is truly one the most talented drivers ever.......He is probably one of the best Rallye Drivers ever and he kicked *** in Trans Am - DTC and many other road racing series.
That video clip is on an old ESPN video from the 80's called Secrets of Speed...
The left foot braking was a technique developed by rallye drivers to do a few things:
1. To turn the vehicle at speed._ see video
2. Cars in the 80's had huge amounts of turbo lag so in order to keep the boost up the driver would keep the throttle open while braking, once he or she did what they needed to do, he would take his foot of the brake and the car would be on full boost and accelerate like a rocket... ( today we have things like anti lag systems to eliminate the need for this )
3. Audi even went on to develop the a clutch system that was integrated into the shifter and the driver would engage the clutch with his hand while shifting- ( pre sequential gear box era)
4. If you see this video you can hear the turbo chargers at full boost and as the driver applies the brake you can here the turbo chargers go nuts as they are on and off the brake ...... Its amazing......
To hear a car like this in real life is amazing......................
Last edited by Fabryce@GMGRacing; Feb 13, 2006 at 01:38 PM.
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