rec.autos.simulators

writes

A few comments against this.....

This is not always true, and will depend upon how your car reacts in the
first and last "phases" of a corner. These control understeer and
oversteer during entry and exit of the corner.

Again this will depend upon the circuit, the rest of your setup and the
driving style. The fast damping controls what the TYRES are doing, the
reactions when you hit kerbs or encounter a bumpy section of track.

Here we really disagree. In real racecar setup the rebound damper is
_always_ higher than the bump damper, probably 1.5, 2 or even 3 times
higher, and GP2 performs the same way as far as I have found.

Here we totally agree :)  I've never found anyone's setup to completely
suit me, and I think it is because while you are testing and developing
a setup at a track, your driving style and setup are created together.
Sometimes you make small adjustments to driving style to suit the car,
and sometimes you change the setup to suit your driving style. When
using someone else's setup you just can't copy their driving style.

We have a setup guide coming in Sim Racing News soon, written by a
ICR2/GP2 expert whose day job is.....testing and developing racecars and
setups! :)  His advice to me so far has been spot-on, not to mention
very interesting reading, so we've asked him to do a full guide
hopefully for the next issue.

Cheers!
John
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Ahh great John,

Here you go again, letting us know how terrific the next SRN will be ;-)
Oh well time to start counting until it comes out.

Keep up the great work.

Cheers.

--John

--
-------------------
  John (Joao) Silva
  http://weber.u.washington.edu/~jsilva
  Seattle, Washington USA.

(John Wallace) says...

The GP2 manual states that the pressure of the rebound damper is usually
about 2/3 of the bump damper, because in corners the external tyre, that
is the one which is rebounding, is ***.
What I wonder is: is this reduction applied automatically by the game? I
mean, if I set both dampers to the same value (there is no measure unit,
so we don't know what those numbers mean), will the pressure of the
rebound damper be 2/3 of the other, of have we to manually set the
rebound damper to a lower value?

--
Nicola Salmoria

No, the manual states the rebound damper is usually 2/3 TIMES that of
the bump damper (i.e. - larger), not 2/3 of the value (which would be
smaller).

Cheers!
John
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I was under the impression that when you multiply something by a fraction, you
get a smaller number than the first.

eg 3 * .6666667 = 2
     9 * .6666667 = 6

So what is it? Is it '2/3 times' or '2 to 3 times'? I must admit, it came
across to me that bump dampers were larger than rebound dampers, but I read a
post from someone who is adamant it should be the other way around.

Anyone??

No??

Damn! More testing!!!  :)

Ashraf

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2/3 means "two to three", NOT "two thirds". Therefore the manual is
correct in stating that rebound dampers ALWAYS be higher than bump
dampers, and significantly so.

Cheers!
John

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: No, the manual states the rebound damper is usually 2/3 TIMES that of
: the bump damper (i.e. - larger), not 2/3 of the value (which would be
: smaller).

What?  The manual says 2/3 TIMES....  No wonder I am having trouble
figuring out these advanced settings.  Everytime I've looked at the US
manual it only says something like "Adjust the rebound dampers to obtain
desired balance during steering transients... Set the slow rebound first
and then the fast rebound.  Terminate the adjustment when the preferred
balance has been achieved."

Yeh, real helpful, NOT!

--
**************************** Michael E. Carver *************************
     Upside out, or inside down...False alarm the only game in town.

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=<[ /./.  [-  < ]>=-=-=-=-=-=-=-=-=-=-=-=-=-=

(John Wallace) says...

Interesting. This is a translation error in the Italian manual, then.

My question stands, however: do we have to set the rebound damper to 2/3
times the value of the bump damper, or is this adjustement done by the
game?

--
Nicola Salmoria

The manual uses a typeset fraction for 2/3, not 2 (slash) 3, so my
guess is that your original view is correct. That is to say, the
rebound damper should be set to a value smaller than the bump damper.

You have to do it.

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Of course people can use whatever they want and whatever works for them,
but in the real world, during my tests with GP2, and during the tests of
those I know to be skilled at creating good setups, setting the rebound
lower than the bump will NOT produce a good setup.

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: 2/3 means "two to three", NOT "two thirds". Therefore the manual is
: correct in stating that rebound dampers ALWAYS be higher than bump
: dampers, and significantly so.

Two to three times? Just how is it spelled out in your (UK) manual? My
manual (Canada/US) uses a typeset fraction with 2 [superscript] / 3
[subscript]. If it was a normal set two slash three, then I would read it
as two to/and/or three times. The way I infered it though, was the
fraction two-thirds. I'll try it the other way tho, and see what happens.

...waiting for the (I hate to say it) yellow flag bug fix. I hate to
spin, then get smacked by someone going full tilt boogie...
    __o
  _-\<,_  Cosmo Potapoff

< Hello John Wallace, can you send back all the information (to the
newsgroup) you sent to me some days ago concerning SLOW DAMPERS & FAST
DAMPERS setup ??? If you still remember,i was the one who've sent tips
on DAMPERS,and with your reply, you gave me more hint on the way the
DAMPERS should be adjusted.>

To those who still ask,if 2/3rd of REBOUND compared to BUMP,it's
definitly a typing error (or the author was sleeping).
FRONT DAMPERS: Start with REBOUND # 2 times the BUMP #
REAR DAMPERS :same thing.

Recently i've been running consistently in the 1m23's at Silverstone for
Qualifying and my setup for SLOW DAMPERS are as followed:

             LEFT FRONT                          RIGHT FRONT
SLOW BUMP:       11                                   11
SLOW REBOUND:    20                                   20

             LEFT REAR                           RIGHT REAR
SLOW BUMP:        9                                    9
SLOW REBOUND:     16                                   16

These numbers are not absolute, as you can see it's close of being
2 time, depending of the rest  of the setup,these setting could be
changed easily to your needs. Personally for "medium speed" track, i
never use more of 4 deg differential between FRONT/REAR WING, This
makes my car very comfortable and controllable.

Hope it will be of help to some... Eric