Chassis Stiffening? Not sure if it could be the missing link?

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fbccars924

fbccars924

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big_noobowski924
So I have been working on a couple cars to be posted on my tuning thread and have noticed that the reactions the cars give are erratic even on the same corner. The hairpin just after the back stretch at Trial Mountain is the best example. In my Viper ACR i can come up to the turn one lap and pull a perfect partial powerslide 2.5g turn then the next go round on fresh tires plow the outside barrier with no adjustments made? Same for my 69 Z28's (rm and street trims). I'm just wondering if chassis stiffening is gonna make this problem easier to cope with.
 
I doubt it, sounds like you've already got understeer if you're ploughing into the outside barrier, and the chassis reinforcement will only make it worse.
 
thats the problem, one lap its there next lap its not. I can deal with understeer if its consistant. Its kind of frustrating. I opened my garage two weeks ago hoping to post my first gt5 tune the next day and took online and it was crap so i retuned to be managable both on and offline then i went and did a race and it was understeer all the time for a lap the the next lap was managable oversteer and lap 3 was managable til the last two turns when I spun on both, mind you tire wear was off so i can rule out tire wear.
 
You're not going to create a tune that's just as good online as it is offline, it's just impossible since the physics are different.

You need to tune for one and not the other at the same time, then the problem should solve itself :)
 
I have one tune that is managable both on and offline that can run sarthe within 1 seconds difference between the two.
 
Even with tire wear off you'll get a difference between cold tires and warm tires. If the understeer is only occurring on the first lap then its likely the tires warmed up and provided the extra grip needed on the subsequent laps.
 
it is a possibility, but, im running racing softs as my viper pushes just over 1k hp so what im experiencing should be much quicker in progression.
 
trackripper123
I doubt it, sounds like you've already got understeer if you're ploughing into the outside barrier, and the chassis reinforcement will only make it worse.
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Hi trackripper, I think this is actually a GTP tuning myth. Sure, one needs to retune after reinforcing but I think the end result is more consistent handling throughout a corner and therefore a better tune.

Sometimes the difference is negligable though, maybe whether reinforcement is needed depends on the car / suspension stiffness / tyres / swamp gas etc etc... cue conspiracy theories ;)
 
It has made a pretty significant difference on the car's I've equipped it with, and I've found that it's only necessary on cars that don't have a very stiff chassis to begin with.

I think its fair enough to say that I've ruined every car where I've equipped this reinforcement :lol: It may be a case of just learning to adjust things.
 
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I dont know Ill buy another z28 and duplicate the current tune and add the chassis stiffening and see what that gets me.
 
i think nomis is bang on

i) myth
ii) you will need to retune - i don't think slapping on chassis reinforcement on the same suspension settings will net you the results you want and is likely what feeds point i).

what i've noticed is that handling becomes more 'consistent'.
 
esoxhntr
i think nomis is bang on

i) myth
ii) you will need to retune - i don't think slapping on chassis reinforcement on the same suspension settings will net you the results you want and is likely what feeds point i).

what i've noticed is that handling becomes more 'consistent'.
Click to expand...

thats why im duplicating my z28 that way if it destroys my setup it wont destroy my z28.
 

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