ICR2: Road America Expirement

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

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?

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

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

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

> 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!

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

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

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

>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

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> 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!

>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

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>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?