rec.autos.simulators

help - trailbraking - gpl

MJS

help - trailbraking - gpl

by MJS » Mon, 10 Apr 2000 04:00:00

I've been trying to learn to trail brakr in gpl for the last couple of days
with no success at all. Is there an idiots guide anywhere ? I've tried with
different cars and setupps always with the same result the back end spins
out when i finish braking. I try to break hard going into the corner but as
i release the brakes and start  to put my foot on the throttle the back end
flips out, every time. What am i doing wrong ? I'm at the point of going
back to single axis and forgetting about trail brakeing, is it worht keeping
going with ? Any help would be appreciated.
Jon Anderse

help - trailbraking - gpl

by Jon Anderse » Mon, 10 Apr 2000 04:00:00

You'll need a front biased brake balance. Start with 58 pst. I started out
trailbraking at Monza. Brake hard in a straight line, then release the brake
pedal gradually as you turn in. If the rear comes out, you are not releasing
the brakes fast enough.

You may want to use very little toe-in at the rear. Otherwise, the car
controls you, not the other way around.

Use a 85/30 ramp angle, with 5 clutches. 60/45 is faster, but makes the car
more difficult to control.

Jon


john moor

help - trailbraking - gpl

by john moor » Mon, 10 Apr 2000 04:00:00

Rather than go into it here i will simply give you a great link......
http://website.lineone.net/~richardn/index.html#Trail
and add that some of us struggle with it after years of racing ( real and online
)
JM

> I've been trying to learn to trail brakr in gpl for the last couple of days
> with no success at all. Is there an idiots guide anywhere ? I've tried with
> different cars and setupps always with the same result the back end spins
> out when i finish braking. I try to break hard going into the corner but as
> i release the brakes and start  to put my foot on the throttle the back end
> flips out, every time. What am i doing wrong ? I'm at the point of going
> back to single axis and forgetting about trail brakeing, is it worht keeping
> going with ? Any help would be appreciated.

Jim Alliso

help - trailbraking - gpl

by Jim Alliso » Thu, 13 Apr 2000 04:00:00


I wouldn't be nearly as fast as I am now (still not fast enough though :-) )
if I didn't trail brake.
My advice is to keep at it until you master it. It takes a sound setup
though. I highly
recommend Ricardo Nunnini's site at  http://website.lineone.net/~richardn/
to help you
with developing a good setup tailored to your style. Try some of Alison
Hine's setups
too ( http://simracing.com/alison/gpl/) as I understand they work well for
trail braking.

You'll probably find that you need to release much more brake pressure then
you think
as you progress through the turn. Also make sure that you get maximum
braking before
you turn in and start to release brake pressure. You should jockey the brake
pressure
(on the straight before turning in) so that you just start to hear the tires
squeal a bit. Once you
get a good setup and develop a feel for trail braking you can use your
brakes to "steer" the
car on the optimum line and carry more speed through the corner. You want a
nice smooth
blend between braking, braking and turning, accelerating and turning, and
pure acceleration.
Your feet should be light on the pedals, almost like you're "dancing"
through the corner. Think
"finesse" here.

You'll need to find the most grip and the best balance that you can in your
setup before you can
really start to get into the "zone" with trail braking. Once you're there
though, it's a blast!

Good luck!

PoPaxSmu

help - trailbraking - gpl

by PoPaxSmu » Fri, 21 Apr 2000 04:00:00

i just discovered how to trailbrake without trying a few days ago...  heres how
i do it... the key is (just like everything else in gpl) use your ears... you
can hear when the car starts to slide too much... i havent found any extra
speed trailbraking though... exept in the slower corners where the front end
wants to wash out (the ninety, lots or places at rouen or monaco)
i could send you my lotus setup if you like... but it might not help you if its
not what your used to
Martyn Danb

help - trailbraking - gpl

by Martyn Danb » Fri, 21 Apr 2000 04:00:00

For me i've discovered I am trail braking without consciously tryin to
+)
well now that i've noticed I;ve started to do it, i have started
thinking about it.  It became quite obvious at Brands Hatch last night
during an F2 practice session.
I find it all relates to something Jackie Stewart once said, I can't
quote him but I think what he said was something like this:  It was when
I learned how to release the brake that I got faster.  LOL ok some of u
historians maybe able to clarify that statement or correct it.

Anyways what I found is... I was working on my lap tmes (duh) and had
been pushing my braking points abit and I found the car naturally
turning in as I lifted off the brakes without any conscious effort on my
part.  Ok its been doing this awhile, i just really started to think
about why and what I must have been doing.
The midspeed turns at Brands Hatch are a great place to practice this I
think.  I'd come into the turn braking braking and I wanted to turn the
wheel but afraid i'd lose it, well i can only guess that I was turning
in so late that I couldn't stop myself turning in (just an ever so tiny
bit) b4 I had completely released the brake.
So what I am now working on is lengthening the time it takes me for
releasing the brake while at the same time gently getting back on the
gas during turnin. I think getting back in the gas is critical here to
help stabilize the car and reduce those lap times.  Also without getting
on the gas you increase your risk of losing the rear end.  Maybe I doing
it wrong, but hey it feels great on the midspeed turns (2/3rd gear).  T1
at Monaco comes to mind as well as the rights at Brands.  I find its
easier at the higher speed turns than the slower ones, so for now I am
just going to navigate the slow ones anyway I can until I start noticing
I am trailbraking those as well +)

Is it me? or will most of us start trailbraking subconsciously, at least
in some places on the track?

my thots

Md

P.S.  I run a 55-56 brake bias in F1 and 54-55 in F2


> i just discovered how to trailbrake without trying a few days ago...  heres how
> i do it... the key is (just like everything else in gpl) use your ears... you
> can hear when the car starts to slide too much... i havent found any extra
> speed trailbraking though... exept in the slower corners where the front end
> wants to wash out (the ninety, lots or places at rouen or monaco)
> i could send you my lotus setup if you like... but it might not help you if its
> not what your used to


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