a ginetta g4 setup inquiry

  • Thread starter darkblu
  • 15 comments
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ok, i'm in love with that car. seriously.

so i fiddled a bit with it, and i need your opinion on whether this setup is any good (i'm not gonna list it here right away, to avoid boring you, just the tunning and timing)

NA engine, staged 3, 198hp before oil change, 208 after, runs done at 198,
stage 3 weight reduction,
no rigidity frame, but with RRP checked,
exhaust: sports,
chip: installed,
transmition: full-customised
brakes: racing
suspension: semi-recing
tyres: r4 r4

best lap time at the High-speed Ring original circuit: 1'10.703
(after that session the car needed a new RRP, so there's a chance the best lap was done with less-than-perfect frame geometry.. then again, maybe not as the best lap was 2nd out of 17 laps total, with a few deadly crashes further into the session)
 
Ok, this is kinda confusing, specially if we don't know what do you want to do with the car, are you planing to race it? or for a specific track?, I think the question here is Are you happy with the way it handles? because if you are experiencing some understeering/oversteering, braking, tyre wear problems...etc. Then get the racing suspension, brake controller, and get a spoiler if it can be applied to the car...then do a little searching for set-ups and you'll find that some great tunners from this section have already a tunning setting for a car like yours, like this one.

https://www.gtplanet.net/forum/showpost.php?p=1803160&postcount=9
(Courtesy of Duck)

Ciao...
 
well, basically i want to see if my setup is any good for the ginetta the way it's now, and for this track. i'm planning to eventually race it, but i want to keep the engine NA - with an oil change it goes as high as 208hp, and i like this power level. i'm planning on soon installing the full-racing suspension and the car already has the breaking controller (that being a part of the setup i did not mention it), about spoilers - i don't want any, and i don't think this baby would accept it anyway. otherwise i know that some guys have great setups for this beauty, but as it is a car with a character, it loves to be setup for each track. so i want to feel the car and be able to set it up right for an arbitrary track. i.e. not just copy over proven setups.

so question is, judging from the time, did i get this setup any good or is it pathetic?
 
I think it's ok, but if you are going to race it at the High-speed Ring, then play around with the transmition a little bit and bring the auto-set towards 17 or 18 so it can reach a nicer speed, if you get the racing suspension tune up the spring rate since the car's initial set up is not as "tight" as it should be. give it a go and then check back to see how you did. ;)


Ciao...
 
thanks, i'll definitely continue with the setup. btw, the transmition is already at Auto17 and i reach in the upper 260s km/h with it (on the same circuit). i've already tightened the suspension considerably, but most likely will start all over on the full-racing one. so, considering that my driving probably sucks, and the lack of a steering wheel does not help me either, you're saying this time is not totally shabby?

btw, i'm also using the twin-plate in the drivetrain, i'm considering a tripple one.
 
Too bad I'm currently racing the 9 Hour Tsukuba endurance race (A-spec), if not I would give it a try and compare my time to yours...as far as a steering wheel, you don't really need it, most the best racers in the OLR or WRS series have a DS2 so it's ok, and the transmition, raise it up a little bit, also, don't forget to take the inside of the first corner after the straight, the one before the last curve, and the last one(if done in normal) so you can get out fast and kill some seconds.

Ciao...
 
Scaff
You may want to give this a try as well, the level of mods is different to yours, but the suspension set-up should still be fine.

Give it a go.

done.
now, of the above i used just the suspension and the lsd tune-up and i kept the rest of the car settings so as to produce a more meaningful compariosn with my original setup (which i will call here A, and the new tune-up - B).

High-speed Ring best lap (out of 33 laps): 1'10.896

my impressions from the ride:

B suspension has considerably higher damping than A and the car behaves noticeably steadier bounce-wise.

B's steering, though, is definitely less forgiving than A's. with B the car has practically zero tolerance to the slightest steering inaccuracies at the high-speed arcs - something this circuit is abund of, and each unaccounted-for oversteer costs dearly.

my verdict:

potentially with B a very experienced driver may produce better times, given speed arcs are taken ideally (incl. accounting for the oversteer). the original strong tendency of the car to oversteer is preserved with this setup, giving the car an advantage at mid-to-high angle corners, but at the same time being your worst enemy in speed-arcs. for less-than-stellar drivers like myself, setup A can be potentially more productive, as it does address the car's oversteering rather well. bottomline, your mileage may vary (tm)
 
darkblu
done.
now, of the above i used just the suspension and the lsd tune-up and i kept the rest of the car settings so as to produce a more meaningful compariosn with my original setup (which i will call here A, and the new tune-up - B).

High-speed Ring best lap (out of 33 laps): 1'10.896

my impressions from the ride:

B suspension has considerably higher damping than A and the car behaves noticeably steadier bounce-wise.

B's steering, though, is definitely less forgiving than A's. with B the car has practically zero tolerance to the slightest steering inaccuracies at the high-speed arcs - something this circuit is abund of, and each unaccounted-for oversteer costs dearly.

my verdict:

potentially with B a very experienced driver may produce better times, given speed arcs are taken ideally (incl. accounting for the oversteer). the original strong tendency of the car to oversteer is preserved with this setup, giving the car an advantage at mid-to-high angle corners, but at the same time being your worst enemy in speed-arcs. for less-than-stellar drivers like myself, setup A can be potentially more productive, as it does address the car's oversteering rather well. bottomline, your mileage may vary (tm)

Thanks for the feedback and kudos for running the laps and for the write-up.

The Ginetta is a tricky car to set-up and as my original write-up says it does need tweaking for each and every track, and as you quite correctly state, different set-ups work differently for each driver.

All of us have different driving styles (sometimes the differences are minor - sometimes huge),and as I have always maintained this means that we have to adapt set-ups for our own needs.

+rep for the feedback and write up, btw have you had a look at my GT4 tuning guides? They may be of interest, links can be found in my sig.

Regards

Scaff

BTW - out of interest what was your original set-up?
 
sorry, had no chance to post these past days.

Scaff
btw have you had a look at my GT4 tuning guides? They may be of interest, links can be found in my sig.

downloading them as i type this : )

BTW - out of interest what was your original set-up?

here (hope this does not exhibit some fundamental no-no):

semi-racing suspension (F, R):
SR: 5.5, 3.8
RH: 99, 99
SA: 7, 7
CA: 3.9, 2.4

brake controller: 6, 3

the deal with the rather extreme camber angles - they're there to help with the oversteering and my personal shakiness on the road. as the ginetta is one extremely light babe, braking is still fine with those angles.

ps: loved your gallery, btw!
 
darkblu
sorry, had no chance to post these past days.



downloading them as i type this : )



here (hope this does not exhibit some fundamental no-no):

semi-racing suspension (F, R):
SR: 5.5, 3.8
RH: 99, 99
SA: 7, 7
CA: 3.9, 2.4

brake controller: 6, 3

the deal with the rather extreme camber angles - they're there to help with the oversteering and my personal shakiness on the road. as the ginetta is one extremely light babe, braking is still fine with those angles.

ps: loved your gallery, btw!


Ta

I will give these a go, High Speed ring is the track IIRC.

BTW Let me know what you think of the guides.

Scaff
 
just finished the tuning guide part 1 - a very sane piece of writing, i must say. and one that nicely fits in the gap that polyphony left in the documentation aspect of the game. an overall mighty useful text - big kudos!

i have a qustion though. you say that the camber angle increasing from zero on (or toward negatives in real world terms) gradually decreases traction in the straights. but you don't seem to mention anything about the relation of the effect to tyres hardness there - should not the camber-angle traction effect also depend on the hardness of the tyre too - i.e. for tyres in the soft end of the spectrum the traction loss effect should increase at a lower rate compared to harder tyres. same in cornering - the 'escape limit' angle should increase with tyre softness. otherwise i totally agree that setting the camber angle is a black art, i.e. a game of massive statistics, particularly if you're looking for the maximal gain - the perfect camber angle before 'escape limit' (i.e. the peak of the grip function) would differ from corner to corner and from driver to driver.
 
darkblu
just finished the tuning guide part 1 - a very sane piece of writing, i must say. and one that nicely fits in the gap that polyphony left in the documentation aspect of the game. an overall mighty useful text - big kudos!

i have a qustion though. you say that the camber angle increasing from zero on (or toward negatives in real world terms) gradually decreases traction in the straights. but you don't seem to mention anything about the relation of the effect to tyres hardness there - should not the camber-angle traction effect also depend on the hardness of the tyre too - i.e. for tyres in the soft end of the spectrum the traction loss effect should increase at a lower rate compared to harder tyres. same in cornering - the 'escape limit' angle should increase with tyre softness. otherwise i totally agree that setting the camber angle is a black art, i.e. a game of massive statistics, particularly if you're looking for the maximal gain - the perfect camber angle before 'escape limit' (i.e. the peak of the grip function) would differ from corner to corner and from driver to driver.

You are quite right that real world camber settings are very tyre sensitive, the guides (and glad you like Pt.1) are however written with a GT4 focus in mind and I personally have not found any significant benefit in running higher camber values with specific camber settings.


Thats not however to say that I have been able to test every tyre/car/corner combo in the game, hence the strong focus in the guide in getting people to
see what works for them.

I would however be careful with suggestions that tyres can be broken down into such basic groups as softer = slower loss of traction, etc. As real world tyres with vary massively dependent on a huge range of variables. Many high-grip race tyres actually have a very quick transition across the limit of the slip angle, others don't.

I'm also a believer that camber settings are particularly strongly effected by an individuals driving style, which is one of my main aims for the guides, to try and avoid putting to much focus on any particular driving style (ie mine). I hope in that regard I got things right.

BTW Have not had any time to play around with Ginetta settings, will try tonight.

Regards

Scaff


OK - I've given your settings a few laps at the High Speed Ring and my first thought confim what I had suspected in advance. And its nothing to do with your set-up, the Ginetta is just not suited to this track and the speeds involved.

In regard to your set-up I found it a little over-damped for my liking and running a little to high, my settings for the car on Semi-race were as follows

Spring Rate - 5.5 / 3.0
Ride Height - 92 / 92
Damper - 3 / 2
Camber 3.2 / 2.5

What the car is screaming for is downforce, but it will not take a wing, and as a result is always going to be a nightmare above 100 mph.

BTW one thing I did notice was you went for Weight Reduction Stage 3, I must confess I rarely go this far with a lot of cars as its not normally worth the money. In this case its Cr.21,000 for a 13 kg reduction in weight, which is over Cr.1,600 per kilo. Given the very low weight of the car to start, I personaly would save the money.

The Ginetta is a great little car, I just didn't really enjoy it on this track if I am honest. For me its more suited to the more technical tracks, I find it a great challenge at Deep Forest or Trail Mountain.

Regards

Scaff
 
Scaff
OK - I've given your settings a few laps at the High Speed Ring and my first thought confim what I had suspected in advance. And its nothing to do with your set-up, the Ginetta is just not suited to this track and the speeds involved.

thanks! as about car's suitability - we'll see ; )

In regard to your set-up I found it a little over-damped for my liking and running a little to high

i don't particularly like my setup's bounce/rebounce behaviour either, but i'm still working on it. and the height adjustment i'm keeping for last after i see how much i can afford of it.

What the car is screaming for is downforce, but it will not take a wing, and as a result is always going to be a nightmare above 100 mph.

exactly my thoughts - this car needs a bloody downforce, badly. but i enjoy the car's power-weight ratio, and i want to see how much of it can be put to work at high speeds - that's the reason i'm trying to maximise the car's characteristics at high speeds, and also that's why my going all the way with weight reduction.

The Ginetta is a great little car, I just didn't really enjoy it on this track if I am honest. For me its more suited to the more technical tracks, I find it a great challenge at Deep Forest or Trail Mountain.

yes, the ginetta is naturally suited for technical circuits, no argument about that. but i want to see its other side. i guess i just want to know the car really well. did i mention i'm having an affair with it? : )

again, thanks for the test drive, i've taken note of your remarks.


ps: btw, for whatever it's worth, my best time on the HighSpeed ring with my workhorse Evo6 TME (tuned to 485hp) is some mere 2 sec less than my ginetta time. not too shabby for the little beauty, i'd say.
 
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