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 1937GP bugs/glitches report and driving advice

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Alberto Ibañez
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PostSubject: 1937GP bugs/glitches report and driving advice   Sat 11 Nov - 15:04

Since the mod and our physics changes will be tried here for the first time, you can report here any problems you find with it until the race thread is unlocked for the entry list Smile 

You can also ask for advice on cars/driving technique, as they are quite peculiar and in the GP you have to fight with them for 3 hours Very Happy

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Pascal Mikula
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PostSubject: Re: 1937GP bugs/glitches report and driving advice   Sun 12 Nov - 9:02

Not a bug report or anything, but I just wanted to ask whether you know about the update for the mod which added the Bugatti Type 51, Type 54 and Vanderbilt Cup cars. I don't quite know where to find it at the moment but it's called the v1.1 update for the GP37 mod. bounce

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Alberto Ibañez
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PostSubject: Re: 1937GP bugs/glitches report and driving advice   Sun 12 Nov - 9:42

I have it, and will be doing physics for them. Unfortunately those are cars in other classes or directly outdated in the late 30s, so no real competition for the other ones in the mod.

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Sam Smith
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PostSubject: Re: 1937GP bugs/glitches report and driving advice   Sun 12 Nov - 17:41

What physics changes have you made? Great news that you masters are touching up the 1937 mod 😁
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Alberto Ibañez
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PostSubject: Re: 1937GP bugs/glitches report and driving advice   Sun 12 Nov - 18:15

It's in the readme Wink

Full physics from scratch.

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Michael Drechsler
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PostSubject: Re: 1937GP bugs/glitches report and driving advice   Sun 12 Nov - 18:23

Gotta say I love the new physics. The big Mercs and Auto Unions are still definitely too much for myself, but the voitourettes are really a dream to drive now! :top:

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Juha Bos
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PostSubject: Re: 1937GP bugs/glitches report and driving advice   Sun 12 Nov - 18:59

Apart from the mirrors which I mentioned earlier, I think the pit stop times are too short.

The refuel rate is 12 litres per second. It was 0.83 in WEC. I'm no expert on 1930's technology but that's seems rather fast considering the equipment at their disposal. Same with tyres, 20 seconds for 2 tyres, that's less than it takes to remove the knock offs from the wire wheels.

I'm not saying the stops should last 5 minutes and give time for a smoke, half a supper and reading the newspaper, but it's not really accurate considering the same 50-litre pit stop with four tyres would cost me 51 seconds in 1937 and 62 seconds in 1982.

I really like the your work though. :top:

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Pascal Mikula
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PostSubject: Re: 1937GP bugs/glitches report and driving advice   Sun 12 Nov - 19:02

Juha Bos wrote:
Apart from the mirrors which I mentioned earlier, I think the pit stop times are too short.

The refuel rate is 12 litres per second. It was 0.83 in WEC. I'm no expert on 1930's technology but that's seems rather fast considering the equipment at their disposal. Same with tyres, 20 seconds for 2 tyres, that's less than it takes to remove the knock offs from the wire wheels.

I'm not saying the stops should last 5 minutes and give time for a smoke, half a supper and reading the newspaper, but it's not really accurate considering the same 50-litre pit stop with four tyres would cost me 51 seconds in 1937 and 62 seconds in 1982.

I really like the your work though. :top:

In the 1930s they didn't give a damn about safety, so about your fuel flow thing, I think they used pressure of over 3 bar to get that gasoline in the car. But about the tires... yeah.

Also something from my part, the gauges, at least on the Mercedes, aren't correct. At least the revmeter. It stops at the 5500 mark when the engine itself is hitting 7000. I had it fixed once but I forgot to make backup files, sooo...

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What is Psychosis? - When everybody turns into tiny dolls and they have needles in their mouths and they hate you and you don't care because you have THE KNIFE! AHAHAHAHAHAHA! - Definition courtesy of Dr Lemuel Pillmeister (also known as Lemmy)
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Sky Willis
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PostSubject: Re: 1937GP bugs/glitches report and driving advice   Sun 12 Nov - 19:02

Did someone say Vanderbilt cup cars? That would be incredibly cool!
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Richard Coxon
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PostSubject: Re: 1937GP bugs/glitches report and driving advice   Sun 12 Nov - 19:03

We studied footage and read reports from the time and in the 1938 German GP Mercedes was doing 34 second pit stops which included changing 2 wheels and filling the tank.

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Juha Bos
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PostSubject: Re: 1937GP bugs/glitches report and driving advice   Sun 12 Nov - 19:08

Thanks for clearing that up. :top:

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Alberto Ibañez
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PostSubject: Re: 1937GP bugs/glitches report and driving advice   Mon 13 Nov - 3:57

Quote :
At least the revmeter. It stops at the 5500 mark when the engine itself is hitting 7000. I had it fixed once but I forgot to make backup files, sooo...

That was in the original mod, and we fixed that. Either you have it installed wrong, or I put the wrong file in the patch :hum:


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Jukka Maattanen
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PostSubject: Re: 1937GP bugs/glitches report and driving advice   Mon 13 Nov - 5:53

I think the fix was my responsibility. I'll have a look after work :hum:
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Yves Plaçais
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PostSubject: Re: 1937GP bugs/glitches report and driving advice   Mon 13 Nov - 6:16

Je n'arrive pas à régler correctement les rétroviseurs (on en aura pourtant sacrément besoin !), suis-je le seul ?

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Juha Bos
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PostSubject: Re: 1937GP bugs/glitches report and driving advice   Mon 13 Nov - 6:20

Tu n'es pas le seul. C'est pareil chez tout le monde et pour chaque voiture.

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Alberto Ibañez
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PostSubject: Re: 1937GP bugs/glitches report and driving advice   Mon 13 Nov - 7:43

Jukka Maattanen wrote:
I think the fix was my responsibility. I'll have a look after work :hum:

Thxs Jukka, as I suspect I might have lost the track of the intended files after several updates during the developent process.

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Alberto Ibañez
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PostSubject: Re: 1937GP bugs/glitches report and driving advice   Mon 13 Nov - 8:35

Strategy tips for the race:

The Mercedes had a huge fuel tank that allowed one stop strategies and was prepared to deal with that extra weight. It is thus much better on full tank than the AU and Alfa, as its rear weight bias and traction improves considerably. This means it will be very quick at the beginning of the stint, while the AU will struggle with the extra weight and increased inertia. However, towards end of the stint the Mercedes will suffer from traction problems as the worn tires will add to the lighter fuel load. So if you go for one stop, be careful with your tires or you will drop like a stone in the last laps of the first stint.

The AU in turn will be proportionally quicker at the end of its stint, though it will need two stops. Its main advantage is that the behaviour will not change thanks to the central location of the tank (Does not affect the weight distribution as much as in Mercedes or Alfa).




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Jukka Maattanen
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PostSubject: Re: 1937GP bugs/glitches report and driving advice   Mon 13 Nov - 11:26

Alberto Ibañez wrote:
Jukka Maattanen wrote:
I think the fix was my responsibility. I'll have a look after work :hum:

Thxs Jukka, as I suspect I might have lost the track of the intended files after several updates during the developent process.

Some files indeed got left out or were accidentally overwritten. If Alberto or someone wants to upload the fix on the FTP they are welcome to do so, in the meantime it's on Mediafire:
mediafire.com file/91ac35j0cj8uxtc/37LGP_gauges.7z

Now, I don't consider it a full, final update. When I worked on this patch - almost a year ago - the 37s were, as I recall, a side project of Alberto's or something so as time went on I put it aside and forgot about. Maybe I'll finish the remaining bits one day, who knows. In any case, the tachometers on all cars should be accurate as is the case with temperature gauges around the operating temperature. If your instruments are still fucked I can only apologise - no refunds :D
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Petr Hlavac
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PostSubject: Re: 1937GP bugs/glitches report and driving advice   Mon 13 Nov - 16:24

Isn't it way too easy to kill the AU's engine? One split-second-overrev and it's done. Should a rock solid V16 be this fragile?

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Last edited by Petr Hlavac on Tue 14 Nov - 6:27; edited 1 time in total
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Alberto Ibañez
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PostSubject: Re: 1937GP bugs/glitches report and driving advice   Mon 13 Nov - 17:46

Jukka Maattanen wrote:


Some files indeed got left out or were accidentally overwritten. If Alberto or someone wants to upload the fix on the FTP they are welcome to do so, in the meantime it's on Mediafire:
mediafire.com file/91ac35j0cj8uxtc/37LGP_gauges.7z

Now, I don't consider it a full, final update. When I worked on this patch - almost a year ago - the 37s were, as I recall, a side project of Alberto's or something so as time went on I put it aside and forgot about. Maybe I'll finish the remaining bits one day, who knows. In any case, the tachometers on all cars should be accurate as is the case with temperature gauges around the operating temperature. If your instruments are still fucked I can only apologise - no refunds :D

Thanks Jukka :top:

Since this won't cause any mismatches online, I will leave it as optional patch in this thread, and will include it ithe next official one, which will also update ERA physics and include the Bugatti, hopefully.

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Pascal Mikula
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PostSubject: Re: 1937GP bugs/glitches report and driving advice   Tue 14 Nov - 4:25

Alberto Ibañez wrote:
Jukka Maattanen wrote:


Some files indeed got left out or were accidentally overwritten. If Alberto or someone wants to upload the fix on the FTP they are welcome to do so, in the meantime it's on Mediafire:
mediafire.com file/91ac35j0cj8uxtc/37LGP_gauges.7z

Now, I don't consider it a full, final update. When I worked on this patch - almost a year ago - the 37s were, as I recall, a side project of Alberto's or something so as time went on I put it aside and forgot about. Maybe I'll finish the remaining bits one day, who knows. In any case, the tachometers on all cars should be accurate as is the case with temperature gauges around the operating temperature. If your instruments are still fucked I can only apologise - no refunds :D

Thanks Jukka :top:

Since this won't cause any mismatches online, I will leave it as optional patch in this thread, and will include it ithe next official one, which will also update ERA physics and include the Bugatti, hopefully.

Don't forget the Vanderbilt Cup cars :D

Also, are the brakes on the Auto Union supposed to be that weak? O.o I mean, I know they're drum brakes and 1937 and stuff but hot damn, I'm not feeling brave enough to drive that thing at over 200 kph :aie:

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What is Psychosis? - When everybody turns into tiny dolls and they have needles in their mouths and they hate you and you don't care because you have THE KNIFE! AHAHAHAHAHAHA! - Definition courtesy of Dr Lemuel Pillmeister (also known as Lemmy)
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Jason Whited
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PostSubject: Re: 1937GP bugs/glitches report and driving advice   Tue 14 Nov - 10:57

No bug issues for me.

I'm just hear to say thank you for this mod.
These cars are the most fun I've had sim driving in a LONG time. They are challenging, but when you get it right they are golden.

Addictive....and just as I would imagine these old cars.

I might not survive this particular race, but I'm going to have a hell of a lot of fun trying.
Amazing work! Thanks a ton! :clap:

:yaa:

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Alberto Ibañez
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PostSubject: Re: 1937GP bugs/glitches report and driving advice   Tue 14 Nov - 11:33

Cheers Jason Very Happy Much appreciated :chinois:

The physics were in development for a longtime on and off, as we always have many ongoing projects. They still are WIP and more cars will be added, I just hope people enjoy it and give us an excuse for doing more races with this mod Cool

Now I just need to do the 1936 cars and Frank will not fail to appear to drive Varzi's entry :D

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Petr Hlavac
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PostSubject: Re: 1937GP bugs/glitches report and driving advice   Yesterday at 19:14

Please, is it possible to change mirrors range? When i set my ideal seat position (as close to the dashboard as possible and quite low, so that my wheel fits the vitual one), i can't set the mirror low enough, it still points up to the sky.

And as i asked already.. It's extremly easy to kill Auto Union's engine. A single split second over-rev and it's done. Something tells me it's not right...

Otherwise, hats off, these cars are scary to drive. Exactly what i see on historic videos from 30s. Amazing stuff. I highly recommend this documentary, worth every second


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Alberto Ibañez
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PostSubject: Re: 1937GP bugs/glitches report and driving advice   Today at 5:28

Quote :
And as i asked already.. It's extremly easy to kill Auto Union's engine. A single split second over-rev and it's done. Something tells me it's not right...

You are right, though the engine damage is as per the original mod. I will have a look at it, though.

Regarding mirrors, maybe Jukka's patch solves it. Have a try.

EDIT:

Had a look at the engine damage parameters, and it is the same for all cars AU, Mercedes and Alfa. The only difference is that the AU starts blowing at 5500 rpm, the Mercedes at 6000 and the Alfa at 7000, which is consistent with their historic danger rpm range. The AU had a huge , while the Alfa was the opposite. I know the engines in general were quite fragile as they were constructed with light materials and metallurgy of the era was obviously not as good as modern one (They had huge oil consumption because of the tolerances they were forced to use in piston rings).

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