rec.autos.simulators

gpl braking

Mark

gpl braking

by Mark » Mon, 02 Nov 1998 04:00:00

Is there any way to stop the wheels locking
under braking ? I always seem to lock up no
matter how soft I am with the braking.
Nafi Coke

gpl braking

by Nafi Coke » Mon, 02 Nov 1998 04:00:00

What controller are you using?  I would check your brake calibration or pot.
You should definitely be able to brake without locking.

Nafi


>Is there any way to stop the wheels locking
>under braking ? I always seem to lock up no
>matter how soft I am with the braking.

David Mast

gpl braking

by David Mast » Mon, 02 Nov 1998 04:00:00


>Is there any way to stop the wheels locking
>under braking ? I always seem to lock up no
>matter how soft I am with the braking.

I've had a lot of probs with my CH Pro Pedals locking, at least with the
trainer cars.  The prob as I see it with the CH's is the very limited travel
range.  I have to be very precise otherwise it goes into lockup. My solution?  
I've dialed back the brake balance to about 52% forward.  Which may be
detrimental in reducing overall braking capability, but it gets the job done.  
Peter 'kayakr' Ashle

gpl braking

by Peter 'kayakr' Ashle » Mon, 02 Nov 1998 04:00:00

If when you first get into the brakes you go more than ~25% throw, you will
often lock.  Go deeper from there once weight is transfered forward.
Peter 'kayakr' Ashle

gpl braking

by Peter 'kayakr' Ashle » Mon, 02 Nov 1998 04:00:00

?
done.

Doesn't this just lockup the backs first?

Doug Gordo

gpl braking

by Doug Gordo » Tue, 03 Nov 1998 04:00:00

Like everything else in GPL, smoothness is the key! However, on a real car
the brake "pushes back" on your foot so that you can feel how hard you're
braking by the force you're applying to the pedal. On current PC controls,
brake effort is strictly a matter of how far down the pedal is. This can
make it extra difficult to be consistent, so even more caution is required.

  Doug


>Is there any way to stop the wheels locking
>under braking ? I always seem to lock up no
>matter how soft I am with the braking.

SteveBla

gpl braking

by SteveBla » Tue, 03 Nov 1998 04:00:00

You might try this.   When calibrating your pedals, after setting full travel
for them, hold down on the brake pedal slightly before clicking on "ok" to save
the settings.  There's a reading above the bar that goes from 0.0 to 1.0 as you
move the pedal.  Hold the brake down to about .2 - .3 while you click "ok".
This will keep the brake from being actuated at first touch, and may help you
compensate for the long pedal travel in some controllers.  Experiment till you
find a setting you like.  This assumes you have your pedals on separate axes,
but you can probably do the same without.

Steve B.

Wolfgang Prei

gpl braking

by Wolfgang Prei » Tue, 03 Nov 1998 04:00:00



>>Is there any way to stop the wheels locking
>>under braking ? I always seem to lock up no
>>matter how soft I am with the braking.

>I've had a lot of probs with my CH Pro Pedals locking, at least with the
>trainer cars.  The prob as I see it with the CH's is the very limited travel
>range.  I have to be very precise otherwise it goes into lockup. My solution?  
>I've dialed back the brake balance to about 52% forward.  Which may be
>detrimental in reducing overall braking capability, but it gets the job done.  

52% ? That's a very moderate front brake bias, IMO. I usually start
with 65% and reduce it until the rear of the car starts overtaking
when braking.

As for locking up the brakes: you have to un-learn braking techniques
from ICR2 or GP2. In those ground effect cars, you can slam on the
brakes at high speed, and the downforce will keep the wheels from
locking until you're very slow.

A wingless car will lock its brakes at any speed, high or low. If you
brake hard at top speed or immediately after accelerating, there will
be even less weight on the front wheels, so they'll lock even earlier.
You have to brake a little to transfer weight to the front wheels,
then brake harder until your front wheels are about to lock. In
theory, that is. :) I can't do it consistently myself, but I'm getting
better.

--
Wolfgang Preiss   \ E-mail copies of replies to this posting are welcome.


David Mast

gpl braking

by David Mast » Tue, 03 Nov 1998 04:00:00


It should.  But I do know I have better control, ie less propensity to lock
anywhere.  But admittedly, it probably is not the best way to do it.  As
witnessed by my lap times (1:54's at Monza with Trainer), I have to work on my
technique.


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