NR2002 tire circumference

Anybody know?

left side or right side? this should be an interesting thread. "Gerald Moore" <[email hidden]> wrote in message news:[email hidden]... > Anybody know?

Tom Osbon wrote: > > left side or right side? > this should be an interesting thread. and with what kind of tire pressure ? Just to add another variable :-) Beers and cheers (uncle) Goy "The Pits" http://www.theuspits.com/ "A man is only as old as the woman he feels" --Groucho Marx--

Radials have virtually no change in circumfrance with different psi unlike a bias ply tires. -- Darrin Stevens www.Stevens-Racing.com "Goy Larsen" <[email hidden]> wrote in message news:[email hidden]... > > > Tom Osbon wrote: > > > > left side or right side? > > this should be an interesting thread. > > and with what kind of tire pressure ? > > Just to add another variable :-) > > > Beers and cheers > (uncle) Goy > > "The Pits" http://www.theuspits.com/ > > "A man is only as old as the woman he feels" > --Groucho Marx--

Darrin Stevens wrote: > > Radials have virtually no change in circumfrance with different psi unlike a > bias ply tires. If you're talking about unloaded tires, I agree, but I would think on a loaded tire there would be a difference in how much the weight of the car compresses the tire where it's in contact with the road ? Beers and cheers (uncle) Goy "The Pits" http://www.theuspits.com/ "A man is only as old as the woman he feels" --Groucho Marx--

Just remember that tires are not round when mounted and on the ground. They have about 1 foot flat spot hortizontal to the ground. This certainly affects stagger and since weight is different on all tires.. The flat part varies from tire to tire from side to side. -- Donald Wilshe 888 588-9207 Martel Brothers Performance, Worlds Largest On-Line Auto Parts Mfg Catalog Library www.martelbros.com Other Interest: www.ivga.com www.games-advertising.com www.whra.com "Darrin Stevens" <[email hidden]> wrote in message news:3da473c8$[email hidden]... > Radials have virtually no change in circumfrance with different psi unlike a > bias ply tires. > > -- > > Darrin Stevens > www.Stevens-Racing.com > > > > > "Goy Larsen" <[email hidden]> wrote in message > news:[email hidden]... > > > > > > Tom Osbon wrote: > > > > > > left side or right side? > > > this should be an interesting thread. > > > > and with what kind of tire pressure ? > > > > Just to add another variable :-) > > > > > > Beers and cheers > > (uncle) Goy > > > > "The Pits" http://www.theuspits.com/ > > > > "A man is only as old as the woman he feels" > > --Groucho Marx-- > > >

On Wed, 09 Oct 2002 20:57:25 +0200, Goy Larsen <[email hidden]> wrote:

Quoted text (10 lines)

> > >Darrin Stevens wrote: >> >> Radials have virtually no change in circumfrance with different psi unlike a >> bias ply tires. > >If you're talking about unloaded tires, I agree, but I would think on a >loaded tire there would be a difference in how much the weight of the >car compresses the tire where it's in contact with the road ?

Uhm, radius or circumference? I'd say circumference stays quite the same in all cases, unless you calculate it as 2*PI*r. ;-) Ruud van Gaal Free car sim: http://www.racer.nl/ Pencil art : http://www.marketgraph.nl/gallery/

"Don Wilshe" <[email hidden]> wrote in message news:v5%o9.104808$[email hidden]... > Just remember that tires are not round when mounted and on the ground. > > They have about 1 foot flat spot hortizontal to the ground. Thiscertainly > affects stagger and since weight is different on all tires.. The flat part > varies from tire to tire from side to side. A foot? Seems a lot!

A 1 foot tire contact area? I highly doubt that, that tire contact patch is usually only several inches along the circumference of the tire, and of course "most" of the width of the tire. -- Biz "Don't touch that please, your primitive intellect wouldn't understand alloys and compositions and,......things with molecular structures,....and the....." - Ash Don Wilshe <[email hidden]> wrote in message news:v5%o9.104808$[email hidden]... > Just remember that tires are not round when mounted and on the ground. > > They have about 1 foot flat spot hortizontal to the ground. This certainly > affects stagger and since weight is different on all tires.. The flat part > varies from tire to tire from side to side. > > -- > Donald Wilshe > 888 588-9207 > Martel Brothers Performance, Worlds Largest On-Line Auto Parts Mfg Catalog > Library > www.martelbros.com > Other Interest: > www.ivga.com > www.games-advertising.com > www.whra.com > > > "Darrin Stevens" <[email hidden]> wrote in message > news:3da473c8$[email hidden]... > > Radials have virtually no change in circumfrance with different psi unlike > a > > bias ply tires. > > > > -- > > > > Darrin Stevens > > www.Stevens-Racing.com > > > > > > > > > > "Goy Larsen" <[email hidden]> wrote in message > > news:[email hidden]... > > > > > > > > > Tom Osbon wrote: > > > > > > > > left side or right side? > > > > this should be an interesting thread. > > > > > > and with what kind of tire pressure ? > > > > > > Just to add another variable :-) > > > > > > > > > Beers and cheers > > > (uncle) Goy > > > > > > "The Pits" http://www.theuspits.com/ > > > > > > "A man is only as old as the woman he feels" > > > --Groucho Marx-- > > > > > > > >

Ruud van Gaal wrote: > > Uhm, radius or circumference? I'd say circumference stays quite the > same in all cases, unless you calculate it as 2*PI*r. ;-) I hate Usenet........too many smart(ass) people Beers and cheers (uncle) Goy http://www.theuspits.com "A man is only as old as the woman he feels........" --Groucho Marx--

Ruud van Gaal wrote: > > Uhm, radius or circumference? I'd say circumference stays quite the > same in all cases, unless you calculate it as 2*PI*r. ;-) Ah, but having given it some thought, one could assume that it's the "roll radius" which is important here and that changes with the pressure in the tire ? Not bad eh, about 30 BPS wouldn't you say ? (Back Paddles pr Second) Beers and cheers (uncle) Goy http://www.theuspits.com "A man is only as old as the woman he feels........" --Groucho Marx--

Both sides should be the same; stagger isn't allowed anymore. "Tom Osbon" <[email hidden]> wrote in message news:M2Yo9.182582$[email hidden]...

Quoted text (8 lines)

> left side or right side? > this should be an interesting thread. > > "Gerald Moore" <[email hidden]> wrote in message > news:[email hidden]... > > Anybody know? > >

Hmmm... I thought stagger was set / fixed / regulated by NASCAR and/or Goodyear.. and that was why there's no point in having stagger-adjustments in N2002/N4/N3 etc... Have I missed something? -- ed_ "John Pancoast" <[email hidden]> wrote in message news:[email hidden]... > Both sides should be the same; stagger isn't allowed anymore. > > > "Tom Osbon" <[email hidden]> wrote in message > news:M2Yo9.182582$[email hidden]... > > left side or right side? > > this should be an interesting thread. > > > > "Gerald Moore" <[email hidden]> wrote in message > > news:[email hidden]... > > > Anybody know? > > > > > >

You know, I think you're right Ed. Sorry about that. "Ed Solheim" <edwins[ REMOVE ]@[ THIS ].no> wrote in message news:YP3p9.1601$[email hidden]... > Hmmm... I thought stagger was set / fixed / regulated by NASCAR and/or > Goodyear.. and that was why there's no point in havingstagger-adjustments

Quoted text (25 lines)

> in N2002/N4/N3 etc... > > Have I missed something? > -- > ed_ > > "John Pancoast" <[email hidden]> wrote in message > news:[email hidden]... > > Both sides should be the same; stagger isn't allowed anymore. > > > > > > "Tom Osbon" <[email hidden]> wrote in message > > news:M2Yo9.182582$[email hidden]... > > > left side or right side? > > > this should be an interesting thread. > > > > > > "Gerald Moore" <[email hidden]> wrote in message > > > news:[email hidden]... > > > > Anybody know? > > > > > > > > > > > >

you will always get stagger if you have different air pressure. -- Donald Wilshe 888 588-9207 Martel Brothers Performance, Worlds Largest On-Line Auto Parts Mfg Catalog Library www.martelbros.com Other Interest: www.ivga.com www.games-advertising.com www.whra.com "John Pancoast" <[email hidden]> wrote in message news:[email hidden]... > Both sides should be the same; stagger isn't allowed anymore. > > > "Tom Osbon" <[email hidden]> wrote in message > news:M2Yo9.182582$[email hidden]... > > left side or right side? > > this should be an interesting thread. > > > > "Gerald Moore" <[email hidden]> wrote in message > > news:[email hidden]... > > > Anybody know? > > > > > > >

What Tire Pressure? -Larry "Gerald Moore" <[email hidden]> wrote in message news:[email hidden]... > Anybody know?

Oh, shit. Someone done broke out the slide rule. Check please! :) -Larry "Ruud van Gaal" <[email hidden]> wrote in message news:[email hidden]...

Quoted text (9 lines)

> On Wed, 09 Oct 2002 20:57:25 +0200, Goy Larsen <[email hidden]> > wrote: > Uhm, radius or circumference? I'd say circumference stays quite the > same in all cases, unless you calculate it as 2*PI*r. ;-) > > > Ruud van Gaal > Free car sim: http://www.racer.nl/ > Pencil art : http://www.marketgraph.nl/gallery/

On Wed, 09 Oct 2002 22:02:11 GMT, Goy Larsen <[email hidden]> wrote:

Quoted text (10 lines)

> > >Ruud van Gaal wrote: >> >> Uhm, radius or circumference? I'd say circumference stays quite the >> same in all cases, unless you calculate it as 2*PI*r. ;-) > >Ah, but having given it some thought, one could assume that it's the >"roll radius" which is important here and that changes with the pressure >in the tire ?

Right, it's called Re; effective radius at load X. However, there's a world of information behind this, since the radius from the axis down is different from the radius going up to the top of the wheel. So there is no one radius. So Re is really just an average which is more of an empirical result; if after 1km your wheels have rotated X times, then (assuming no tire slip) the effective circumference can be calculated as 1km/X (did I miss a factor here?). From which you can calculate Re. Not nice in sims, but there has been work done on this, to estimate Re using Yet Another Set of Pacejka Coefficients (tm). I just use the wheel radius all the time. :) I think the radius change is a secondary effect with respect to tire temp changes. >Not bad eh, about 30 BPS wouldn't you say ? >(Back Paddles pr Second) Quite good. ;-) Ruud van Gaal Free car sim: http://www.racer.nl/ Pencil art : http://www.marketgraph.nl/gallery/

On Thu, 10 Oct 2002 03:16:07 GMT, "Larry" <[email hidden]> wrote: >What Tire Pressure? Good Year rubber or Bridgestone rubber? :) >-Larry > >"Gerald Moore" <[email hidden]> wrote in message >news:[email hidden]... >> Anybody know? Ruud van Gaal Free car sim: http://www.racer.nl/ Pencil art : http://www.marketgraph.nl/gallery/

>What Tire Pressure? Good Year *** or Bridgestone ***? :) >-Larry >> Anybody know? Ruud van Gaal Free car sim: http://www.racer.nl/ Pencil art : http://www.marketgraph.nl/gallery/

Ruud van Gaal wrote:

Quoted text (28 lines)

> > On Wed, 09 Oct 2002 22:02:11 GMT, Goy Larsen <[email hidden]> > wrote: > > > > > > >Ruud van Gaal wrote: > >> > >> Uhm, radius or circumference? I'd say circumference stays quite the > >> same in all cases, unless you calculate it as 2*PI*r. ;-) > > > >Ah, but having given it some thought, one could assume that it's the > >"roll radius" which is important here and that changes with the pressure > >in the tire ? > > Right, it's called Re; effective radius at load X. > However, there's a world of information behind this, since the radius > from the axis down is different from the radius going up to the top of > the wheel. So there is no one radius. > So Re is really just an average which is more of an empirical result; > if after 1km your wheels have rotated X times, then (assuming no tire > slip) the effective circumference can be calculated as 1km/X (did I > miss a factor here?). From which you can calculate Re. Not nice in > sims, but there has been work done on this, to estimate Re using Yet > Another Set of Pacejka Coefficients (tm). > > I just use the wheel radius all the time. :) I think the radius change > is a secondary effect with respect to tire temp changes.

Couldn't have said it better myself......:-) > >Not bad eh, about 30 BPS wouldn't you say ? > >(Back Paddles pr Second) > > Quite good. ;-) Why thank you Beers and cheers (uncle) Goy "The Pits" http://www.theuspits.com/ "A man is only as old as the woman he feels" --Groucho Marx--

With inner liner or without "Ruud van Gaal" <[email hidden]> wrote in message news:[email hidden]...

Quoted text (16 lines)

> On Thu, 10 Oct 2002 03:16:07 GMT, "Larry" <[email hidden]> wrote: > > >What Tire Pressure? > > Good Year rubber or Bridgestone rubber? :) > > >-Larry > > > >"Gerald Moore" <[email hidden]> wrote in message > >news:[email hidden]... > >> Anybody know? > > > Ruud van Gaal > Free car sim: http://www.racer.nl/ > Pencil art : http://www.marketgraph.nl/gallery/

With inner liner or without

Quoted text (14 lines)

> >What Tire Pressure? > Good Year *** or Bridgestone ***? :) > >-Larry > >> Anybody know? > Ruud van Gaal > Free car sim: http://www.racer.nl/ > Pencil art : http://www.marketgraph.nl/gallery/

"Larry" <[email hidden]> wrote in message news:<Xh6p9.94427$[email hidden]>...

Quoted text (7 lines)

> What Tire Pressure? > > -Larry > > "Gerald Moore" <[email hidden]> wrote in message > news:[email hidden]... > > Anybody know?

Let's say it's roughly equal to all the hot air that has been let out thus far in response to (what I thought (that's my problem, btw) should be) a simple question! ;) LOL, j/k, etc... How 'bout a ballpark figure, "under normal driving conditions", LOL. I am looking for something so I can "guestimate" what gear ratio I need for a given speed at a given rpm, without having to do a lot of trial and error. Wouldn't circumference always be (practically) the same, anyway? Gerald

28.5 inches "Gerald Moore" <[email hidden]> wrote in message news:[email hidden]... > "Larry" <[email hidden]> wrote in messagenews:<Xh6p9.94427$[email hidden]>...

Quoted text (21 lines)

> > What Tire Pressure? > > > > -Larry > > > > "Gerald Moore" <[email hidden]> wrote in message > > news:[email hidden]... > > > Anybody know? > > Let's say it's roughly equal to all the hot air that has been let out > thus far in response to (what I thought (that's my problem, btw) > should be) a simple question! ;) LOL, j/k, etc... > > How 'bout a ballpark figure, "under normal driving conditions", LOL. > > I am looking for something so I can "guestimate" what gear ratio I > need for a given speed at a given rpm, without having to do a lot of > trial and error. > > Wouldn't circumference always be (practically) the same, anyway? > > Gerald

On Fri, 11 Oct 2002 00:26:15 GMT, "Tom Osbon" <[email hidden]> wrote: >28.5 inches And circumference is practically the same yes. When spinning, the tire wants to bulge anyway, so even if the loaded radius is a little less, the circumference (distance per tire rotation) is just about the same. Take care of the 'final drive ratio'; the diff ratio. That's part of the gearing too. Ruud

Quoted text (26 lines)

>"Gerald Moore" <[email hidden]> wrote in message >news:[email hidden]... >> "Larry" <[email hidden]> wrote in message >news:<Xh6p9.94427$[email hidden]>... >> > What Tire Pressure? >> > >> > -Larry >> > >> > "Gerald Moore" <[email hidden]> wrote in message >> > news:[email hidden]... >> > > Anybody know? >> >> Let's say it's roughly equal to all the hot air that has been let out >> thus far in response to (what I thought (that's my problem, btw) >> should be) a simple question! ;) LOL, j/k, etc... >> >> How 'bout a ballpark figure, "under normal driving conditions", LOL. >> >> I am looking for something so I can "guestimate" what gear ratio I >> need for a given speed at a given rpm, without having to do a lot of >> trial and error. >> >> Wouldn't circumference always be (practically) the same, anyway? >> >> Gerald >

Ruud van Gaal Free car sim: http://www.racer.nl/ Pencil art : http://www.marketgraph.nl/gallery/

That's diameter, I'm sure, but thanks. I saw somebody quote the rulebook that it was 27.5" but I'm sure it is really whatever tire goodyear happens to bring to race weekend, prolly a bit of a range. I haven't had a chance to test out whether or not the game varies the size based on pressure or not. Wish the tach was a bit more precise/readible. Gerald "Tom Osbon" <[email hidden]> wrote in message news:<HUop9.190274$[email hidden]>...

Quoted text (27 lines)

> 28.5 inches > > "Gerald Moore" <[email hidden]> wrote in message > news:[email hidden]... > > "Larry" <[email hidden]> wrote in message > news:<Xh6p9.94427$[email hidden]>... > > > What Tire Pressure? > > > > > > -Larry > > > > > > "Gerald Moore" <[email hidden]> wrote in message > > > news:[email hidden]... > > > > Anybody know? > > > > Let's say it's roughly equal to all the hot air that has been let out > > thus far in response to (what I thought (that's my problem, btw) > > should be) a simple question! ;) LOL, j/k, etc... > > > > How 'bout a ballpark figure, "under normal driving conditions", LOL. > > > > I am looking for something so I can "guestimate" what gear ratio I > > need for a given speed at a given rpm, without having to do a lot of > > trial and error. > > > > Wouldn't circumference always be (practically) the same, anyway? > > > > Gerald