AC BTCC - BMW vs Nissan @ Croft - Wednesday 11th Nov 2020

Medilloni · Nov 9, 2020

Ramjet said:
What laptimes are you guys doing?

...Ah! good to see Jo Bonnier here Jo!

Kek700 · Nov 9, 2020

I'll give the Nissan GTR a go please @Medilloni john

Medilloni · Nov 9, 2020

Kek700 said:
I'll give the Nissan GTR a go please @Medilloni john

And there you are Ernie! In with a (relatively) slim-bottomed Nissan

Ramjet · Nov 10, 2020

We still got small children, so I really don't have the time I would like to join, and race, but I am sure tempted. I just tested the Nissan around Croft last sunday, and it's a fun track. I will try to join some races later on maybe.

GeekyDeaks · Nov 10, 2020

stribbeck said:
found alot of bumps on the exits chucking me off track in the beemer

I did about 10 laps in each last night. I know exactly what you mean about the bumps and the beemer! The Nissan just plows through them under throttle, but bloody hell does it punish you if you hesitate during a corner

. I'm miles off the pace in it though, struggling to even get close to :30 as I found myself gingerly approaching sunny all the time. I also forgot to check the gearing for either, I was wondering if the default was way off with the Nissan?

Kek700 · Nov 10, 2020

@GeekyDeaks
If you post your static front and rear tyre pressures, and front an rear toe, I may be able to help with stability. Only for med tyres.

ps, for Nissa.

GeekyDeaks · Nov 10, 2020

It's 99.9% default @Kek700 . I had to increase the ride height by 1 at the front as it said it was invalid otherwise

Kek700 · Nov 10, 2020

This is basically for that one very difficult right-hand bend.

21 26

26 28

front toe +0.05 rear toe +0.08

This is just for croft, other circuits are completely different.

The front pressures are important as you need it for stability into the last very fast entry into the right-hander when you are braking.

I have not done much testing, not sure if this tweak works as you get near the end of the race with mediums.
You could fine tweak the front pressures, I have used the heavy hammer approach, this is how I run it.

I put the front toe at +0.5 to start with and see how stable it is. I run my front toe at -0.30.
May change that in practice on race day.

Remove all the rear ABR, although this is counter-intuitive for an FWD car. You can always add it if it makes the car turn better for you.

Basically looks very similar to my setup.

by all means, respond with a don't work or like, helps me rethink things again.

This could very well be a "frig" to correct my driving style and have no bearing on anyone else.

I basically have no problem with the car at Croft, apart from the bend mentioned above.

just noticed your gearing comment, the last gear at 143mph then space all at approximately 15mph increments.

GeekyDeaks · Nov 10, 2020

Ah, just realised why the setup was invalid. I missed this in the download description :

setup to be at the edge of the minimum allowed ride height, make sure you use tire blankets are on to pass the test

GeekyDeaks · Nov 10, 2020

thanks for the tips @Kek700 - I just had a quick go and to be totally honest I couldn't tell much difference, but I suspect that says more about my driving ability than your setup!

. I'll try and have a bit more practice in the car with the default first, then retry your suggestions again as I think I just need a bit more familiarity with the car first as it seems to drive vastly differently to any of the others I have tried, but I'm guessing that might be because it's the first FWD

I'm really not very au-fait with setup changes and other than gear ratios and altering the tyre pressures to try and keep them in the green I tend to stick to the default. I think I understand the toe settings you suggested, but I am a little confused about why you increased the rear pressure. I had thought you would want it fairly low in a FWD to keep the temps up, but I guess I am missing something?

Kek700 · Nov 10, 2020

Tyre pressures are far more important in AC than trying to get temperatures into them, as it is a virtually none working rear it will be very hard to get the temperatures into them anyway.
It would solve a lot of problems if we could put softs and hards onto some cars.
Far better to get them to run at their optimum pressure.
I was not happy about the front differential, but for me it strangely seems to work.

GeekyDeaks · Nov 10, 2020

Kek700 said:
Far better to get them to run at their optimum pressure.

Ah, something has just gone click! Ok, this now makes complete sense...

GeekyDeaks · Nov 10, 2020

Hi @Medilloni , can I change to the Nissan please? I'm getting a bit quicker in it with some practice and now pretty close to the same times I was doing in the BMW. It's a bit trickier to drive, but also a lot more fun when you get it right. It does seem a little thirsty though; I was having to almost fill it to the brim to complete 18 laps. Does that sound right?

doof205 · Nov 10, 2020

I've done no practise at all but I'm tempted to drop in. Are relative rookies alright in this?

VinillaIce82 · Nov 10, 2020

doof205 said:
I've done no practise at all but I'm tempted to drop in. Are relative rookies alright in this?

Will always be a rookie if you don't join!

Medilloni · Nov 10, 2020

.

GeekyDeaks said:
Hi @Medilloni , can I change to the Nissan please? I'm getting a bit quicker in it with some practice and now pretty close to the same times I was doing in the BMW. It's a bit trickier to drive, but also a lot more fun when you get it right. It does seem a little thirsty though; I was having to almost fill it to the brim to complete 18 laps. Does that sound right?

That's done for you buddy, and I'm guessing the Nissan is quicker here

Medilloni · Nov 10, 2020

doof205 said:
I've done no practise at all but I'm tempted to drop in. Are relative rookies alright in this?

Hiya Lewis, every one of us here started just like you - these are fun events. Sign up, above all, have fun, gain experience, and ask for help if you want it - it's a fantastic group of guys here

Vince's post above is spot on!

I've signed you up, just let me know which car you want before 6:30 tomorrow - have a good read of the first 2 posts re the rules, use of real names, Teamspeak - and shout if you want a hand

Chris Down · Nov 11, 2020

No time to do practice tomorrow, so was on the fence, but can't resist a bit of Croft

Go on then, sign me up in the... Nissan, I guess? Who knows. Thanks for organising!

Reik Major · Nov 11, 2020

@Medilloni please sign me up with the Nissan.

I hope to get in touch with the combo at least half an hour prior the event starts. Have practiced this combo a few months ago before the physics of the car changed with its latest update, so I hope to pick up some pace quickly.

Medilloni · Nov 11, 2020

Chris Down said:
No time to do practice tomorrow, so was on the fence, but can't resist a bit of Croft

Go on then, sign me up in the... Nissan, I guess? Who knows. Thanks for organising!

Reik Major said:
@Medilloni please sign me up with the Nissan.

I hope to get in touch with the combo at least half an hour prior the event starts. Have practiced this combo a few months ago before the physics of the car changed with its latest update, so I hope to pick up some pace quickly.

Welcome chaps, good to see you both

Nissan is quick here, I'll stay with the bimmer as my excuse for a poor race