rFactor 2 Online Tools by Chris “redapg”

mantasisg said:
@Emery Yes it is that what happens.

@redapg Thanks for reply. I was just about to compile a post. I might send the car a little bit later.

I think the tire I am using has been already generated with exact same tool of yours. I use that first one, "the oldest". I have my 3D wheels correct radius. I do get properly edited TGM file using your tool, the Y coordinates of nodes are good. Tires does work well. Just too large. I edit TBC accordingly too. AI tires are good size.

I haven't tested with deflated tires. But I have checked tires with 100kpa reduced pressures, down to 80kpa, and they appeared just as large.

Sometimes I use size multiplyer, although I don't like to do this compromise. Sometimes tire still feels good, but yesterday I have tried reducing radius with it, and weirdly it didn't seem to make visual difference, and car drove worse. I expected that somehow game might be initiating some different file, and renamed it, it gave no results. Tried renaming tbc files in case there was some kind of issue, didn't help.

This is TGM tire:
2BTydfZ.jpeg


This is TBC tire with alt+T:
NFqys1B.jpeg


The difference is about 2-3cm in radius. I also checked out that approximately increasing radius in my 3D modeling program.

Then I also checked the generated file in ttool. Interesting thing is that it shows "Nominal radius" as 0.325m. But it does show "Peak radius" correctly as 0.3m.
edit: after checking other tires Nominal Radius seems to be default at 0.325, the true value is dynamic unloaded tire radius under it, which in my case is still 0.326m

As in ttool glossary:
Nominal Radius (m) → This should be set to the current tyre radius
Peak Radius (m) → Peak tyre radius in metres. In other words, displays the current maximum radius of any individual node in the tyre.

I have tried to set nominal radius to what I need, and ran 14 automated tests out of 230. It didn't help. Maybe should run them all.

But I fear that likely the issue will be some stupid mistake I must be doing.
Click to expand...
My Eyes are too old as it seems. :)
From the Pictures, i don't see a Difference.
So it would good to have it on my own PC, that i can switch between old and new Tire Model, to better see it.
 
mantasisg said:
Thank you for your work. This multiplyers and nodes relation is absolutely a dark spot for me. Although it seems like it would be straightforward. Apparently they interact in some interesting way, as usual in rF2, wouldn't have guessed that the multiplyers takes part in that tool process. I always use only the first resize tool, the oldest one.

I thought that all what happens is simply rewrite of node coordinates, something more is going on ?
Click to expand...
Yes, but to be honest, i don't remember exactly anymore what exactly it is.
It is the oldest Tire resize Tool and i did make it ~ 10 Years ago.
But what i remember, is that the Multipliers get definitely set to 1, because to leave them as they are, if they are not 1 in the uploaded Tires, makes no Sense at all, because they, of course, also define the Tire Size.
But when they are 1, the Nodes define the Size.
What could have an Influence too, is the Height of the Tire Tread.
If i remember it right, i did add that to the Radius Calculations of the Nodes, because it gave me better Results.
 
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The difference is not as great as in Svictors example, but it becomes very obvious when wheels starts going through body mesh.

@redapg When you say size multiplyers should be on "0", do you literally mean 0, or 0 is 1 as per default in tgm tires ? Or setting it to 0, has a different effect, maybe same as it would be to removing line completely ? IDK if you can remove that line, I guess you can.

I will either send a devmode car to you later, or upload to workshop, or both. As everything right now is semi-alright with the car.
 
mantasisg said:
The difference is not as great as in Svictors example, but it becomes very obvious when wheels starts going through body mesh.

@redapg When you say size multiplyers should be on "0", do you literally mean 0, or 0 is 1 as per default in tgm tires ? Or setting it to 0, has a different effect, maybe same as it would be to removing line completely ? IDK if you can remove that line, I guess you can.

I will either send a devmode car to you later, or upload to workshop, or both. As everything right now is semi-alright with the car.
Click to expand...
I've meant 1, but wrote 0 because i was in a Rush a little bit. :)
I will make a Test now.
 
@mantasisg I've made a Test with the Skip Barber now.
The Size between tbc (SkipBarber.tbc with only 1 Compound) and tgm, when you use Alt+T is identical.
At least i would call it identical. :)
I did check the Radius of the 3D Tire and the Radius from the tbc and the tbc Radius is 0.2957 and the 3D Radius 0.292764.
That are ~3 mm Difference, so we can ignore it.

Then i did load the original front Tire into my Resize Tool, did not change anything, downloaded it and checked it with Alt+T too.
There also was no visible Difference, even if my Tool does not use the exact same Values, due to the Fact, that i don't use 6 Decimals in the Dropdowns.

Then i did use the front Tire from our F3 Mod and resized it to the Values that i got, when i did upload the original Skip Barber front Tire.
And with that, the resized Tire, when i switch the Tire Model, has a smaller Diameter than the tbc Tire.
But when i compare the Radius Value from the Center Node, i get 0.293484 from the original Tire and 0.293300 from the resized F3 Tire.
That is a Difference of 0,184 mm and should not be visible when i switch between old and new Tire Model.

So my Suspicion is, that it has something to do with the Stiffness of the Tire Wall Material, that makes the Difference.

I will try to "display" the Size of the Tire in DevMode.
Maybe that sheds some Light to it.
 
Not 100 % perfect, but it should be OK to measure the Tire Radius.
It's the Skip Barber LF Tire, tbc Radius is 0.2957 and the measure Mesh shows ~0.298.
@mantasisg If you want, i can upload the measure Mesh, that you can check your Radius.

TireRadius.PNG
 
Thank you, this is funky device haha I don't need that. At least not for now, maybe some time later. I trust the size that comes with tbc tire, so it is good enough to try to minimise radius difference visually between two tire models. And it makes sense to interpret it as tire deformation due pressure, as an example

Good to hear that your resize tool comes with negligable errors. In my case the tire is most definitely couple centimeters larger in radius, than it is defined by nodes. I had to go to size multiplier of around 0.92 to go down to roughly 30cm radius.

Anyway, I am pretty happy about how my 911 is now, actually I think it even drives too well. So perhaps the multiplier values for radius aren't too bad. But when I applied them to width wrongly I didn't feel well about handling, although I also was rather ill yesterday.
 
I wasn't sure where to post this. I figured this information would be great to have on the rFTools page as it was the first time I've seen a lot of the information listed. Credit goes to Luthien's (from the ITO Modding team) blog. I believe they go by @Remilla on here.

It is in Japanese. Using Google Translate works really well. It gives really good descriptions of the .tgm settings. It's some information that isn't in the rF2_TGM_TyreTool_QuickStart_V3.pdf or in the SkipBarber TGM.

http://lammasandska.blog57.fc2.com/blog-entry-242.html
 
redapg said:
Not 100 % perfect, but it should be OK to measure the Tire Radius.
It's the Skip Barber LF Tire, tbc Radius is 0.2957 and the measure Mesh shows ~0.298.
@mantasisg If you want, i can upload the measure Mesh, that you can check your Radius.

TireRadius.PNG
Click to expand...
if the tyre is under load, with it's own weight, that should be enough to explain the difference :-D
 
Chris Lesperance said:
I wasn't sure where to post this. I figured this information would be great to have on the rFTools page as it was the first time I've seen a lot of the information listed. Credit goes to Luthien's (from the ITO Modding team) blog. I believe they go by @Remilla on here.

It is in Japanese. Using Google Translate works really well. It gives really good descriptions of the .tgm settings. It's some information that isn't in the rF2_TGM_TyreTool_QuickStart_V3.pdf or in the SkipBarber TGM.

http://lammasandska.blog57.fc2.com/blog-entry-242.html
Click to expand...
This is golden and we know that these guys know how to do good mods...
However, @redapg's tyre database is platinum :-D
 
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Just as an Information.

Today i've switched the php Version of the Webspace, where the Online Tools are running, from 8.3 to 8.4.

I hope that nothing gets affected in a bad Way, but who knows...

Please report it here, when you experience something not being working as before anymore.

Thank you :)
 
Just as an Information: @8Ball reported (thank you for reporting :)) a not working Download of a pdf File.
I've checked it now and i get the below "Code" shown in the Browser Window and nothing gets downloaded.
I guess it's caused by a too old php Code that i use for downloading and i will try to fix it as quick as i can.

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Above described Problem should be solved.
Please report here, if you still encounter Problems.
Thank you! :)
 
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