Corrected.

Vehicle mod: FERRENZI 62-12
Details page: https://www.lfs.net/files/vehmods/42392A

SHORT DESCRIPTION:

Quote :

A mid-1970s Group 7 prototype (Can Am / Interserie) 6.2L V12

COVER SCREENSHOT:

Thanks to all for the positive comments.

Quote from DratsaB :

Excellent Mod car, many thanks for your great work!

Much appreciated, especially from someone who has been playing LFS even longer than me!

I wanted to say something here but I don't have any references (yet) apart from 40-odd years of thinking about motorcycles so I'm talking about high performance naturally aspirated engines here ...

Smaller throttle openings at low RPM actually produce MORE torque than full throttle. That is why you don't fit large carburetors if you want midrange driveability. This is because the higher mixture velocity of a smaller venturi allows improved cylinder mixing and more complete combustion.

In recent times we have seen the move to ride-by-wire throttles and selectable engine maps. This is why modern superbikes can have large throttle bodies and make 230bhp and still be rideable in traffic. When you fully rotate the twist grip at say 3000rpm the ECU does not fully open the butterflies - it gives you an opening that gives you the best useable torque. Previously with carbs (which I love) you had to compromise.

(Of course turbo engines are a whole other area and depend on whether you have mechanical or electronic boost control etc etc etc)

The devs are aware and I remember Scawen discussing this before for the new tyre model including the idea of having a warm-up lap.

I think a warm-up / formation lap is a good idea - it adds to the tension at the start, there is a skill to warming the tyres and also the risk of incidents due to aggressive warming tactics!

Of course we will need an AI safety car that takes the field around at the appropriate speed for the class...

That sure is a pretty kitty!

I have only just noticed your suspension diagram - that front looks too high IMHO.

You may have already found these but ...

Discussion on roll centres

Discussion on height

The diagrams in the first link look good for scaling lengths and inclinations but it looks like you have already done that.

The second link is more relevant because it shows a setting height that you could use in LFS editor but adjusting the vertical position of the inner pivot. That should give you the correct angle for the lower wishbone (providing the tyre height is correct ).

Just some thoughts.

Quote from Yanny :

ive seen quite a few car mods ...

The top three are all in the list and downloadable - I would check you don't have a filter on.

I still have some small improvements that I would like to make and details to add to the interior but the car is basically done so I have uploaded version 1!

Team Ferrenzi warm weather testing

I decided to model a simple engine block to help me work out the dimensions of the car - there's a lot of engine to fit into a small car and I want to be sure it is a realistic design.

Subsequently I realised that there would be glimpses of components through the rear of the car and around the intakes, so added a bit more.

It is all low poly (for example each three branch manifold is only six triangles) but I think it will good enough for those "glimpses".

FERRENZI 62-12

I have decided to create another sports prototype from scratch to my own design and for this one it is time to think ITALIAN!

I have chosen to design a Group 7 / Can Am / Interserie style car from the early to mid 70s.

Those were categories with practically no rules and so that produced some awesome brutish cars with high power, low weight and some innovative design features.

My car will be heavily inspired by the Ferrari 612P and 712P but with the later monocoque construction and aero of cars like the McLaren M20.

Progress so far:-

Quote from Eclipsed :

... death trap? ...

Not sure it's the best combo from a pure racing point of view but it should be "interesting"

I hope people enjoy the challenge!!!

This review says almost 300kg of downforce at 300kmh in race mode

https://www.whichcar.com.au/reviews/2015-porsche-918-spyder-review

1 & 4 - Scawen has stated that the editor displays the car as it would be in the new (development) version of LFS and not the current (public) version so best to leave roughness at 0 for now
2 - If you have set a page in the editor as type 'skin' and have corresponding cutouts and mappings this should work
3 - I think this applies to whole vehicles based on an original LFS car - I think that small components would be OK (eg. original work)

Quote from Eclipsed :

Any chance of this car getting a full skin support?

Skin support added but I have retained the separate number roundel. Hopefully this is the best compromise to retain the original concept of allowing quick and easy, unique colours with a number that can be created in any basic paint package and is high res.

Quote from LE_TANCKER :

Give it a go and tell me what you think!

I gave it a quick go - great setup and much easier to drive ...

I agree on the caster but I was using what the real car used. Apparently it was "up on it's toes", difficult to drive and required subtle inputs so maybe that's what the default setup simulates. Also, with the "old" physics (as I understand it) there is an unrealistically large amount of weight transfer so maybe that explains things further.

What I don't like is the way the car looks with your setup. This may be as much my fault as I modeled the car to sit right on the default setup and this is quite different.

Overall I don't think I will add it to the download. I think you are doing some clever stuff and I will try to learn from that when I do the setups for the new physics.

Well the concept was to keep it simple as in '67 everyone ran with just their racing colours (stripes, nose) and this way anyone can do a quick number and choose colours in 5 mins. Plus you could also do logos and graphics within the roundel.

I guess I could come up with a way to support either approach - I will have a think.

(Really like when my cars are used in RTFR and Retro Cup )

Quote from michal 1279 :

I see I really need to give more care to my Grand Prix Legend 65 ...

Yeah that was definitely an inspiration

Quote from cuni :

With the F67L with 400bhp, for mouse users, accelerating out of a corner you need to up shift to be at around 4000RPM just to avoid any rear spin.

I thought this would be difficult for mouse (and keyboard) drivers. Thanks for the setups - hopefully they will be a help for some people.

Quote from turbofan :

only downside is the standard setup, it is much too unstable, specially for casual drivers who just want a try

Thanks. You may be right but I have tried hard to make it as driveable as possible but these were high power / low grip cars and they were very tricky in real life, which is why they started experimenting with wings the following year.

I think anyone who sticks with it should learn to enjoy it - I am right in the groove and LOVE driving it!!!

Thanks for the nice comments guys!

Just the initial WIP version and I have a list of small things I want to improve but I am really happy with how it turned out.

Thanks! I will have a look at that when I do the next version. I guess it will all change with the new graphics that self shadow but I should be able to improve it for now.

Quote from Scawen :

It would be great if someone had a go and reported if you find any issues. I hope to avoid any bug reports after 0.7E is released.

The Rim Editor appears to be working as intended.

Always a challenge to get into the 12s!

Ah sorry! It is a wide rim

Last edited by teeembo, Mon 27 Nov 2023, 18:38.