> how do you avoid lockup
> because you don't get the weight transfer from coming off the throttle?
um, this is GOOD, because you can turn more brake bias to the rear!
-james creasy
OSP #74
----- Original Message -----
From: Giles Douglas <giles@vy.com>
Cc: Ba-Autox Mailing List (E-mail) <ba-autox@autox.team.net>
Sent: Wednesday, June 13, 2001 9:46 AM
Subject: Re: Stuff I Learned at the Evolution School
> Out of interest, if you're left foot braking, how do you avoid lockup
> because you don't get the weight transfer from coming off the throttle? Do
> you have to be extremely judicious of your initial brake application and
> ease off the throttle somewhat (but not all the way?)
>
> All academic for me of course, because its not possible in DBW Audis/VWs
> (the ECU senses the brake pedal and cuts throttle completely :-(. Although
> I guess it could be worthwhile in terms of braking earlier?
>
> Giles
>
> On Tue, 12 Jun 2001 Kevin_Stevens@pursued-with.net wrote:
>
> > Date: Tue, 12 Jun 2001 15:07:05 -0700 (PDT)
> > From: Kevin_Stevens@pursued-with.net
> > To: Patrick Jones <axng4me@yahoo.com>
> > Cc: "Ba-Autox Mailing List (E-mail)" <ba-autox@autox.team.net>
> > Subject: Re: Stuff I Learned at the Evolution School
> >
> > On Tue, 12 Jun 2001, Patrick Jones wrote:
> >
> > > Of course if you always right foot brake, then there is no
> > > compensating :-)
> >
> > True.
> >
> > > When I started Solo, I used my left foot and thought I was doing well.
> > > Then I watched and talked to Gene (can't remember his last name) from
> > > Team Viper at Dodge during a Viper clinic. This guy was a road racer
> > > who was showing us the new ACR on a Solo course at Mather. He tore up
> > > everybody, including Rich Bontempi, by several seconds. He never used
> > > his left foot. I asked him about it and he said he tried in the past,
> > > but saw he was 'covering' the pedal too much and was 'probably'
> > > exerting a little tiny pressure when he shouldn't be. His advice was
> > > quick hands and feet and some other pearls of wisdom I don't remember
> > > right now.
> >
> > Yes, poor execution can always negate theoretical advantage. And Viper
> > brakes can negate even good execution.
> >
> > > Now, I leave my left foot braking to plowing snow in auto transmission
> > > 4WD pickups.
> >
> > That's fine. Be aware that you're leaving *potential* time on the
course.
> >
> >
> > The point to my message (there usually is one if you look hard enough)
was
> > that, for a change, we actually had a reasonably objective measurement
of
> > LFB advantage. Customarily most of us don't use braking points that are
> > readily recognizable/comparable - even when we say "the dirty cone third
> > from the apex" that's not usually where we are looking while driving and
> > it isn't a very accurate data point. I believe that Byron now has some
> > LFB/RFB numbers for Geez!, but apart from that it's mostly been
apocryphal
> > information that you could actually brake later or quicker.
> >
> > I didn't measure the distance involved, but it was at least 20 feet, and
> > at reasonable 2nd gear speeds (call it 60mph, a CSP Miata was on the rev
> > limiter there), that's .2 - .25 seconds of time that I was still on the
> > gas with LFB as opposed to RFB. Obviously that doesn't translate to .2
> > seconds of scratch time, but it's still a significant number, and I
> > thought it would be of interest to know that there are actual
demonstrable
> > gains to be had.
> >
> > As far as your Viper instructor is concerned, I don't know for how long
he
> > tried LFB, but I've driven automatics with LFB all my life, and it still
> > took me more than six months of intense autoxing to get back to my RFB
> > effectiveness. I do still have problems with overbraking, but it's not
> > execution. There are many parts of courses I walk now and think "How
the
> > hell would I get through there trying to brake with my right foot?".
The
> > answer would be that I'd be doing (relatively) a lot more coasting while
I
> > finagled feet around.
> >
> > KeS
|