Torque Vectoring in the Rain

Discussion in 'Fiesta ST Road Racing' started by MLKN, Nov 25, 2014.

  1. MLKN

    MLKN Active Member

    Thanks for the clarification. I feel like I had some misinformation on the systems but this makes it more clear.

    However, I still experienced oversteer in wet conditions. And it wasn't the lift throttle oversteer I've come to love.

    I've done well with sport mode but will see what happens with lap times next season with esc off.
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  3. razorlab

    razorlab Active Member

    It could have just been trail braking in general that induced snap over steer in the rain. Depending on the conditions and how you did it, that could have the same outcome in a 100% analog car.
  4. Zormecteon

    Zormecteon Active Member

    So, there's an old rally technique that was used on front wheel drive cars; both pedals.
    The problem being addressed is that most front wheel drive cars understeer. Applying power in a corner only makes understeer more, So while accelerating out of a turn, the brakes are applied lightly. This has a gyroscopic effect on the front wheels, which in turn causes the rear wheels to break away, allowing a front wheel drive car to four wheel drift. The angle of the car in the turn can be adjusted by applying more or less brake to tighten or loosen the line. I used to use this in my old VW Rabbit on sweepers in the rain. .. Has anyone tried it with ESC fully on, or in Sport mode?

    I mentioned it to instructors at OA and they acted like they had never heard of it (too young?), but also said "no trail braking" even tho they did it themselves.
    Golfguy11800 likes this.
  5. ElChupacabura

    ElChupacabura New Member

    If I'm understanding you correctly it sounds like you are talking about left foot braking, lightly applying the brakes mid corner to transfer more weight to the front and break traction in the rear. In short, yes this works very well in this car, I have only been able to do this at an autocross but this car rotates wonderfully with a little bit of left foot braking. Around a decreasing radius sweeper a quick stab at the brakes mid corner and a flick of the wheel and you can feel the rear end wiggle, break loose then come around nicely.

    Sent from my iPhone using Tapatalk
  6. Zormecteon

    Zormecteon Active Member

    Yes, ... left foot braking. (during cornering). I'm assuming ESC off since your were autocrossing?
  7. ElChupacabura

    ElChupacabura New Member

    Yes ESC was off, definitely hard to maintain grip in first gear with a stage one tune, I spin the tires all the way through that gear.

    Sent from my iPhone using Tapatalk
  8. Golfguy11800

    Golfguy11800 Member

    DSC is for the unable.

    Left foot braking is nice in the FiST. I use it all the time on my rally roads. Such a fun and capable car this thing is out of the box.

    I prefer driving DSC off at all times and in the rain when doing solo runs. Just drive more conservatively in the rain and drive with understeer in mind, not oversteer.

    I will leave DSC on when commuting on highways, that's it.
    Zormecteon likes this.
  9. juliog

    juliog New Member

    Very likely that's causing the ABS system to act up. Rear tires slowing down at a slower rate may cause ABS to think your front tires are sliding.

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