rec.autos.simulators

ICR2: Road America Expirement

Michael E. Carv

ICR2: Road America Expirement

by Michael E. Carv » Tue, 02 Jan 1996 04:00:00

While trying to get a good set up for Elkhart, I noticed that the LR was
1 degree cooler on the outside.  I thought it best to set the camber a
little more to the positive to even out the temp.  This caused the car
to want to oversteer on the dog-leg on the back straight.  I then set
the camber a little to the negative of the original and found that the
car handled alot better on that point of the track.  I also put in a
little negative stagger to help the overstreer on the back straight.

If you are having similar trouble on Long Beach or Road America you
might want to play with the camber in the LR.

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

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

Kevin E. Hi

ICR2: Road America Expirement

by Kevin E. Hi » Tue, 02 Jan 1996 04:00:00

I have discovered the secret of negative camber also...  The infamous
oversteer on the front straight at long beach can be easily solved if
you put in a little more negative camber on all tires.

I beleive that the working theory here is that you want the tires to
fully contact the pavement when you are turning, not when you are
driving a straight line.  So what you have to do is work out the
camber so that while you are driving straight, the tires are obviously
'out of camber' and when you are turning, the pressure and weight
transfer forces make the face of the tire contact the road evenly.

By the way, if your camber is set for turns and not the straights,
wouldn't the contact patch be smaller on the straights, thus producing
less drag, thus increasing speed on the straights?


>While trying to get a good set up for Elkhart, I noticed that the LR was
>1 degree cooler on the outside.  I thought it best to set the camber a
>little more to the positive to even out the temp.  This caused the car
>to want to oversteer on the dog-leg on the back straight.  I then set
>the camber a little to the negative of the original and found that the
>car handled alot better on that point of the track.  I also put in a
>little negative stagger to help the overstreer on the back straight.
>If you are having similar trouble on Long Beach or Road America you
>might want to play with the camber in the LR.
>--
>**************************** Michael E. Carver *************************
>     Upside out, or inside down...False alarm the only game in town.

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

lee davidso

ICR2: Road America Expirement

by lee davidso » Wed, 03 Jan 1996 04:00:00

What kind of times are you getting at road america? I'm running about 1:53,
probably not stellar, but am interested in others' times.....

thx



> I have discovered the secret of negative camber also...  The infamous
> oversteer on the front straight at long beach can be easily solved if
> you put in a little more negative camber on all tires.

> I beleive that the working theory here is that you want the tires to
> fully contact the pavement when you are turning, not when you are
> driving a straight line.  So what you have to do is work out the
> camber so that while you are driving straight, the tires are obviously
> 'out of camber' and when you are turning, the pressure and weight
> transfer forces make the face of the tire contact the road evenly.

> By the way, if your camber is set for turns and not the straights,
> wouldn't the contact patch be smaller on the straights, thus producing
> less drag, thus increasing speed on the straights?


> >While trying to get a good set up for Elkhart, I noticed that the LR was
> >1 degree cooler on the outside.  I thought it best to set the camber a
> >little more to the positive to even out the temp.  This caused the car
> >to want to oversteer on the dog-leg on the back straight.  I then set
> >the camber a little to the negative of the original and found that the
> >car handled alot better on that point of the track.  I also put in a
> >little negative stagger to help the overstreer on the back straight.

> >If you are having similar trouble on Long Beach or Road America you
> >might want to play with the camber in the LR.

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

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

anmio

ICR2: Road America Expirement

by anmio » Wed, 03 Jan 1996 04:00:00


> What kind of times are you getting at road america? I'm running about 1:53,
> probably not stellar, but am interested in others' times.....

> thx
>Im doing a 1.42,674, it`s ok, but i guess it`s a lot faster drivers outthere. This car i also the main fundament for my race setup, so it`s not

a gung ho all out one fast lap car, with may go fast one lap, or go to
hell with a bang!


> > I have discovered the secret of negative camber also...  The infamous
> > oversteer on the front straight at long beach can be easily solved if
> > you put in a little more negative camber on all tires.

> > I beleive that the working theory here is that you want the tires to
> > fully contact the pavement when you are turning, not when you are
> > driving a straight line.  So what you have to do is work out the
> > camber so that while you are driving straight, the tires are obviously
> > 'out of camber' and when you are turning, the pressure and weight
> > transfer forces make the face of the tire contact the road evenly.

> > By the way, if your camber is set for turns and not the straights,
> > wouldn't the contact patch be smaller on the straights, thus producing
> > less drag, thus increasing speed on the straights?


> > >While trying to get a good set up for Elkhart, I noticed that the LR was
> > >1 degree cooler on the outside.  I thought it best to set the camber a
> > >little more to the positive to even out the temp.  This caused the car
> > >to want to oversteer on the dog-leg on the back straight.  I then set
> > >the camber a little to the negative of the original and found that the
> > >car handled alot better on that point of the track.  I also put in a
> > >little negative stagger to help the overstreer on the back straight.

> > >If you are having similar trouble on Long Beach or Road America you
> > >might want to play with the camber in the LR.

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

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

Rolf Flisber

ICR2: Road America Expirement

by Rolf Flisber » Wed, 03 Jan 1996 04:00:00

Hi Lee,
I am running about 1:47 with the qual setup at Elkhart, the only thing I
have changed is that the disc brakes is set fully forward.
It took me 5 laps to get a fairly good handle, so I wonder if anyone has
a really killer setup for Elkhart Lake.  
/Rolf
#37 Prince Racing Team home page at:
http://www.algonet.se/~rolfl/

> What kind of times are you getting at road america? I'm running about 1:53,
> probably not stellar, but am interested in others' times.....
> thx


Gregory Fu

ICR2: Road America Expirement

by Gregory Fu » Wed, 03 Jan 1996 04:00:00


On real Indycars, they run MAJOR negative camber at Elkhart, often
overheating the inside edge, so I'm not surprise.  Thanks for the tip
though.

I almost always run the insides of my tires slightly hotter, and on ovals,
I run the outsides hotter on the left side too.  Seems to work.

Gregory Fung

Vancouver, B.C., Canada

Gregory Fu

ICR2: Road America Expirement

by Gregory Fu » Wed, 03 Jan 1996 04:00:00


>What kind of times are you getting at road america? I'm running about 1:53,
>probably not stellar, but am interested in others' times.....

I haven't played the game as much as i wanted to, but on a 1-hr session, I
think I was in the 1:52s...


>> By the way, if your camber is set for turns and not the straights,
>> wouldn't the contact patch be smaller on the straights, thus producing
>> less drag, thus increasing speed on the straights?

interesting thought!

Gregory Fung

Vancouver, B.C., Canada

anmio

ICR2: Road America Expirement

by anmio » Thu, 04 Jan 1996 04:00:00


> Hi Lee,
> I am running about 1:47 with the qual setup at Elkhart, the only thing I
> have changed is that the disc brakes is set fully forward.
> It took me 5 laps to get a fairly good handle, so I wonder if anyone has
> a really killer setup for Elkhart Lake.
> /Rolf
> #37 Prince Racing Team home page at:
> http://www.algonet.se/~rolfl/


> > What kind of times are you getting at road america? I'm running about 1:53,
> > probably not stellar, but am interested in others' times.....
> > thx


Hei, du tenk at en nordmann har laget en bil han kj?rer 1.42.634 med!
Ehh, og det er faktisk jeg. Si i fra hvis du vil ha det!
David Spar

ICR2: Road America Expirement

by David Spar » Thu, 04 Jan 1996 04:00:00


>I haven't played the game as much as i wanted to, but on a 1-hr session, I
>think I was in the 1:52s...

I've spent an hour or so on Elkhart Lake, managed to get down to 1:47
something, using the ACE setup with no changes other than wheel lock and
wings. The trick is to lower the wings, I've got the front wing at 9 and
the rear wing at 11.6 and manage to top 200 mph at the end of the
straights. I tried lower rear wing settings but kept losing it in the first
dogleg in the back straight. Maybe I can drop it some more with the
negative camber trick.

Incidentally, this is exactly the type of setup that Villenueve used to win
at this course in '95: Lower down force for better speed in the straights.

Dave Sparks - Sequoia

Josh Beauli

ICR2: Road America Expirement

by Josh Beauli » Fri, 05 Jan 1996 04:00:00



>Subject: Re: ICR2: Road America Expirement
>Date: 3 Jan 1996 00:20:32 GMT
>I've spent an hour or so on Elkhart Lake, managed to get down to 1:47
>something, using the ACE setup with no changes other than wheel lock and
>wings. The trick is to lower the wings, I've got the front wing at 9 and
>the rear wing at 11.6 and manage to top 200 mph at the end of the
>straights. I tried lower rear wing settings but kept losing it in the first
>dogleg in the back straight. Maybe I can drop it some more with the
>negative camber trick.

     Wow! Thanks for the tips -- my car was quick (1:44.03) and it stuck to
the road like shit to a wool blanket.  Here's what I had for a setup for Road
America:     F.Wing: 9   R.Wing: 11.4   S.Lock: 8
                   Camber:   RF:-2.0  RR:-1.4  LR:-1.4 LF:-2.0

     The rest  was the same as the ace setup.   I had one problem -- the front
tires were running too cool (RF:150, LF:180) even after I dropped the pressure
so much that the middle of the tires was 4 degrees cooler.  Any remedies
without sacrificing the car's handling?  


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