hey im a bit new to this so can someone elaborate on this? im familiar with the general concept and im just confused as to how it works... and why the rear doesnt slip if you're still braking at the entry of the turn.

 

it doesent come out because you are "trailing off the brakes" meaning you get less brake pedal the deeper you are into the corner.

So you brake w/ maximum force in a straight line and as you turn the steering wheel you traill off the brakes (use progressively less) all the way to the apex (middle of the corner)

 

The other aspect of this is if done to the full effect it will significantly help with the rotation of the car around the turn. Indeed, when done properly very little steering input is needed to make the apex of the turn. Most of the time however the primary purpous is to allow for as late a brake as possible.

 

It's also to keep the car settled and smooth through the transition from braking to accelerating, maximize speed through the corner by utilizing maximum traction throughout the corner, also minimize/avoid any coasting.

 

wow, 3 right answers, nothing to add.

 

I use it in autocross, but not on the track -- was told to forget about it by an instructor. "Do all your braking before the corner and get back on the gas as you turn in." Is that just beginner advice? Is this what others do?

 

[QUOTE]Originally posted by depletedUfoot
I use it in autocross, but not on the track -- was told to forget about it by an instructor.

 

yeah thats what i was worried about, spinning out because weight transfer is at front when you start the turn. might result in oversteer? if im progressively decreasing pressure off breaks and the rear slips, does that mean ive entered the turn too fast? how fast should it be.. for ... a 90 degree turn?

 

You'll find that TB's usefullness varies depending on the turn, as i imagine most would, and for some turns being back on the gas at or just after turn in can be very effective.

I find the rotation effect of TB very benificial on turns like SoW T2 CW and the entry to BW cotton corners CW. Turns that are tight 90* or more and go from a high speed section to a low speed section.

As for turns where i'm back on the gas quickly following turn in I tend to use that on turns that have compression assisted grip. Turns like TH T9 CCW, BW LostHill CW and SP T3.

But, as stated by your instructor , it is meant as begginer advice. And not very good advice at that. Getting on the gas to soon after turn in can get you into alot of trouble.

 

TB is a tool not a rule. You use te tool when it makes sense and you don't when it doesn't. It works most effectively on corners of 100* of less like hairpins (Laguns Seca T2) and other situations where you go from threshold braking into a corner. Figure it this way, if you need to gear down for a corner then TB might make you faster through it. If you just need a tap on the brakes or a lift, TB has no practical application.

TB when you go from FULL braking to the apex of the corner. It's a transition from full brake to no brake.