FITT - Federation of International Tuners and Test-Drivers

[DolHaus]

Thanks for the help, DolHaus! I've got quite a bit of camber (as guessed), simply because I was trying to negate that understeer I mentioned - should I be removing it or just toning it down? Here's my setup:

@Pete05 I'll definitely try that tune, I feel like this car has a lot of potential. Thanks for the help!

Remove all the camber (back to 0.0), its either broken or not working as expected so the best all round grip is always at 0.0. That will solve the majority of the problems, the rest looks fine at a glance, I can't see anything irregular there.
I would maybe bring the front toe closer to 0.00 as well, the large toe out you are running currently should give you fast turn in but reduced mid/late corner grip at the front, I would imagine its currently trying to compensate for the lack of front grip induced by the camber.
If you give my General Tuning Guide a read then it will help simplify LSD tuning, its fairly simple once you know what you're looking for. Just a case of isolating the 3 different (Initial/Accel/Decel) settings when test driving and focussing on the changes that occur.

 

[Bodyguard]

Remove all the camber (back to 0.0), its either broken or not working as expected so the best all round grip is always at 0.0. That will solve the majority of the problems, the rest looks fine at a glance, I can't see anything irregular there.
I would maybe bring the front toe closer to 0.00 as well, the large toe out you are running currently should give you fast turn in but reduced mid/late corner grip at the front, I would imagine its currently trying to compensate for the lack of front grip induced by the camber.
If you give my General Tuning Guide a read then it will help simplify LSD tuning, its fairly simple once you know what you're looking for. Just a case of isolating the 3 different (Initial/Accel/Decel) settings when test driving and focussing on the changes that occur.

Perfect, I'll alter the camber and toe and have a read of your guide. I'll also experiment with the downforce, as recommended by Bowtie-muscle.
Thank you all for the kind and rapid help, let's hope I see results

 

[DolHaus]

Perfect, I'll alter the camber and toe and have a read of your guide. I'll also experiment with the downforce, as recommended by Bowtie-muscle.
Thank you all for the kind and rapid help, let's hope I see results

No problem happy to help, let us know how you get on

 

[Bodyguard]

No problem happy to help, let us know how you get on

Well the car turns really well, I'm very happy about that! Thank you so much!

I'm having a bit of trouble finding the sweet spot between rear downforce and deceleration sensitivity; every time I apply the brakes, the rear comes out. I have no camber, but my rear toe value of 0.23 remains. Raising the rear downforce fixes the issue (as does increasing deceleration sensitivity, I think), but that also creates understeer, which puts me back to square one...

Aero - 400/610

LSD:

Initial - 0/10
Accel - 0/15
Decel - 0/30

Any ideas?

 

[Bowtie-muscle]

Have you tried changing brake balance from 6/7 to 7/6?

 

[Bodyguard]

Have you tried changing brake balance from 6/7 to 7/6?

I just tried that. It made the car more stable in some respects but less in others. It still felt a little wobbly and I couldn't touch the brakes when going down the main straight on the nordschleife.

@Pete05 Would you by any chance be able to find the link to Highlandor's tune? I had a look for it on the Tune Directory but couldn't find it. If not, no worries.

 

[Pete05]

I just tried that. It made the car more stable in some respects but less in others. It still felt a little wobbly and I couldn't touch the brakes when going down the main straight on the nordschleife.

@Pete05 Would you by any chance be able to find the link to Highlandor's tune? I had a look for it on the Tune Directory but couldn't find it. If not, no worries.

Not exactly sure how to do links sorry but the tune should be under HaB Racing or something similar to that. I haven't seen @Highlandor around here for a while but the tune should still exist.

 

[iainoflo85]

Here you go @Bodyguard

https://www.gtplanet.net/forum/thre...-600pp-online-only.293305/page-3#post-9088491

 

[Bodyguard]

Here you go @Bodyguard

https://www.gtplanet.net/forum/thre...-600pp-online-only.293305/page-3#post-9088491

Thank you iainoflo85

 

[DolHaus]

Well the car turns really well, I'm very happy about that! Thank you so much!

I'm having a bit of trouble finding the sweet spot between rear downforce and deceleration sensitivity; every time I apply the brakes, the rear comes out. I have no camber, but my rear toe value of 0.23 remains. Raising the rear downforce fixes the issue (as does increasing deceleration sensitivity, I think), but that also creates understeer, which puts me back to square one...

Aero - 400/610

LSD:

Initial - 0/10
Accel - 0/15
Decel - 0/30

Any ideas?

Try dropping the rear toe to 0.00. The toe is dynamic in GT6 I've noticed, having rear toe in helps straight line stability but can have adverse effects under cornering and braking. A lower degree of rear toe in can be much more stable in some circumstances so its worth a go.

Raising the Initial to 15 might soften the transfer between phases a little and stop it locking up. The jump in sensitivity between the Accel/Initial (Coming off the throttle) and Decel (hitting the brakes) can sometimes cause the rear wheels to lock up or suddenly rotate around the unloaded inside wheel causing instability. By bringing the 3 figures closer together you make the transfer smoother and less likely to do something unexpected. It sounds counter intuative but lowering the Decel as well may help. Maybe 15/15/24?

Also try dropping the brake bias to 4/5 or 5/6, you might just be overloading the brakes perhaps.

Your ride height looks quite low but the stiff springs should be stopping you from bottoming out.
Try clearing your lap times or head to a fresh track and set a lap where you encountered the rear braking away under hard braking (or where ever you are finding the problem). Use the 'Save Best Lap' feature then open it in the data logger. Check the ride height data to make sure you are not bottoming the suspension out under braking.

 

[Hazz_69]

Does anyone fancy doing me a tune?

 

[DolHaus]

Does anyone fancy doing me a tune?

For what?

 

[Hazz_69]

For what?

Doesn't matter anymore going to try myself! It was for a Vette c06

 

[DolHaus]

Best of luck

 

[dad9699]

When is next event and where do I go to find out this info. I don't see anything after hot hatchback. I am new to on line play and really am lost but would love to participate. I have played off line on gt5 and gt6.

Best of luck

 

[DolHaus]

When is next event and where do I go to find out this info. I don't see anything after hot hatchback. I am new to on line play and really am lost but would love to participate. I have played off line on gt5 and gt6.

There is a FITT contest running at the moment, the sign up and tuning portion is over and we are currently in the test driving phase. If you would like to participate as a test driver to give lap times and feedback then I'm sure you are welcome.
https://www.gtplanet.net/forum/thre...ing-commence-results-due-by-june-18th.308790/
They are always posted in the tuning forum, keep an eye out for the FITT name in the title threads.

The next contest hasn't been thought up yet but if you keep an eye on this thread then you will know when the next one is happening. 👍

 

[Slender_Man]

Hi there, I'm currently a tuner who has entered the FITT tuner shootout posted in @DolHaus's post and i'm here to post a Tuner Shooutout idea i have been thinking could be a future FITT event.

Mille Miglia
1957 cars or earlier
Tuned to 430PP on Comfort soft Tyres

Tracks
Cote de Azur
Matterhorn - Rotenboden

 

[DolHaus]

Hi there, I'm currently a tuner who has entered the FITT tuner shootout posted in @DolHaus's post and i'm here to post a Tuner Shooutout idea i have been thinking could be a future FITT event.

Mille Miglia
1957 cars or earlier
Tuned to 430PP on Comfort soft Tyres

Tracks
Cote de Azur
Matterhorn - Rotenboden

Could be fun, what cars fit in that age/pp range?
We ran Matterhorn Rotenboden in the Miata Challenge and it wasn't a particularly popular choice with the testers, I like Cote de Azur though, that track doesn't get used enough.

 

[Pete05]

Mercedes 300SL Gullwing '54 and 2nd place

 

[Slender_Man]

These are all the cars that are pre 1957

BMW 507 '57
Mercedes 300SL Gullwing '54
Chevrolet Corvette Convertible (C1 ) '54
Citroën 2CV Type A '54
Abarth 1500 Biposto Bertone B.A.T 1 '52
Volkswagen Beetle 1100 Standard (Type-11) '49
Volkswagen Kübelwagen Typ 82 '44
Volkswagen Schwimmwagen Typ 166 '42

 

[DolHaus]

Yeah I just had a look, could be difficult to get usable groups out of those selections perhaps, depends on how you wanted to do it really.

 

[Slender_Man]

With that amount of cars i have to agree, We could always up the year limit to say 1965 then you could split it into two groups i.e.

Pre '57 running 430PP Comfort Soft
'57 - '65 running 450PP Comfort Soft

 

[DolHaus]

With that amount of cars i have to agree, We could always up the year limit to say 1965???

That does open things up, the pre 57 has some interesting cars but not much variety so it would have to be single car events which takes some of the fun out.

 

[Slender_Man]

That does open things up, the pre 57 has some interesting cars but not much variety so it would have to be single car events which takes some of the fun out.

with the second group i put just as you replied opens up alot more cars like the old Japanese cars like the Skyline Sport, Honda S600...

 

[Pete05]

I'm working on a pre 1970 challenge involving Comfort tyres.

The idea so far is to have 3 classes by tyre type/engine type combination.

4 cylinders or less use CS
6 cylinders or less use CM
V8 use CH

Limited mods available at Bathurst.

Feedback & thoughts appreciated.

 

[DolHaus]

with the second group i put just as you replied opens up alot more cars like the old Japanese cars like the Skyline Sport, Honda S600...

500pp or less

Elan S1 '62 (398pp)
300 SL '54 (402pp)
Corvette Coupe (C2) '63 (429pp)
E-Type Coupe '61 (439pp)
GT 350R '65 (455pp)

400pp or less

Silvia (CSP311) '65 (317pp)
Giulia Sprint Speciale '63 (338pp)
Corvette Converible (C1) '54 (358pp)
507 '57 (362pp)
Giulia Sprint GTA 1600 '65 (379pp)

maybe a lower class as well?

 

[Ridox2JZGTE]

I'm working on a pre 1970 challenge involving Comfort tyres.

The idea so far is to have 3 classes by tyre type/engine type combination.

4 cylinders or less use CS
6 cylinders or less use CM
V8 use CH

Limited mods available at Bathurst.

Feedback & thoughts appreciated.

Good one We never have comfort tires only event. I think you have the tires reversed

 

[DolHaus]

I'm working on a pre 1970 challenge involving Comfort tyres.

The idea so far is to have 3 classes by tyre type/engine type combination.

4 cylinders or less use CS
6 cylinders or less use CM
V8 use CH

Limited mods available at Bathurst.

Feedback & thoughts appreciated.

Would depend on the cars selected really, Bathurst is also a really long circuit to be trying to nurse a V8 round on CH so would be punishing on the testers

 

[Ridox2JZGTE]

Instead of Bathurst, maybe Silverstone International, short but interesting to run.

V8 ( limit to 1990-present ) CS tire, 500PP max - no supercharger upgrades allowed - Silverstone International
6 cylinders ( limit to 1980-2000 ) CM tire, 480PP max - turbo allowed - Fuji Speedway F or Nurburgring GP/D
4 cylinders ( limit to 1950-1970 ) CH tire, 390PP max - turbo allowed - Rome or Motegi East/West

Just my recommendation.

 

[Pete05]

Would depend on the cars selected really, Bathurst is also a really long circuit to be trying to nurse a V8 round on CH so would be punishing on the testers

That's the idea I want to refine.

At Bathurst in the 60's, 1966 to be precise, the Mini Cooper S won because a V8 would eat it's tyres & brakes. Obviously the lighter the car, the softer rubber they could wear and therefore lap closer to a more powerful but heavier car.