rec.autos.simulators

GPL braking?

Griffin Che

GPL braking?

by Griffin Che » Fri, 20 Jul 2001 18:27:30

I read the squash ball technique but now I learn more about the
details. I have 2 questions:

1. How would it be when applying to CH Pro Pedal USB?
2. It would be kinda hard since I have to re-cal everytime since GPL
seems to lose the steering wheel config everytime I launch the game.

Anyway, thanks for the tips!

Jonny Hodgso

GPL braking?

by Jonny Hodgso » Fri, 20 Jul 2001 19:51:54


But I thought "push" meant understeer?

Jonny

Bart Westr

GPL braking?

by Bart Westr » Fri, 20 Jul 2001 22:13:18




> > With "pushing" he means oversteering. Engine braking only slows the
> rears,
> > and therefor induces oversteer sooner when they loose traction.

> But I thought "push" meant understeer?

You're right. Now I'm confused too.....
I've looked up the original article, it goes like this:

----- Original Message -----

Newsgroups: rec.autos.simulators
Sent: Wednesday, July 11, 2001 8:38 PM
Subject: Re: GPL braking?

> I find it best to stomp on the brakes firstthen feel it and ease off to
> avoid locking.
> You can use the easy on approach but i find a quick stomp then a slight
lay
> off gives good early braking but you avoid the lock.
> That's a preference.
> The key to late braking is the downshift, as with any sim, the later you
> leave all the shifting the better as if you downshift quickly you will
carry
> too many revs meaning it pushes the car more, do it too quickly and the
dif
> will lock and spin you around.
> So wait until your revs are very low and drop the gears as there is no
added
> "push" against the brakes.

> I'm not an ultra late braker but this always helps me brake a little bit
> later than I used to.

Reading again I think what he says is that the engine is revving so fast
when you just start to brake, that it is in fact still powering the car
forward. I don't know if that is true. It could be if the brakes slow your
car more than the engine braking would do. And engine braking means
transferring energy from the wheels to the engine, which will not happen if
the engine is already do near maximum revs.
The spinning he mentions need not come from the diff, it could also be lock
up of the rears caused by brakes + engine braking. Not using the engine
braking so much will at least make the brake balance more predictable. I
think this is also behind the gas & brake at the same time technique, where
imo the gas is used to take away the last bit of engine braking.

But I'm not sure of any of this. Maybe GraDee himself or someone else can
explain.

Bart

Don Jenning

GPL braking?

by Don Jenning » Sat, 21 Jul 2001 00:53:54

Bart Westra wrote ...

I'll have to do some experimenting with this, say from 5th gear on the
backstretch at Spa.  My feeling as I write this is that if you never
touch the brakes, just let off the gas and keep downshifting as soon as
your rpm's are down about 20%, you couldn't make the rears break loose.
(That's assuming straight-line slowing, of course.)

Bart Westr

GPL braking?

by Bart Westr » Sat, 21 Jul 2001 07:19:53


I think you're right. It would be the combination of normal braking and
engine braking that can lock the rears.

Bart


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