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Virtual Racing Championship
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#Post#: 4940--------------------------------------------------
Confused and Frustrated
By: Tech G Date: October 21, 2017, 10:45 pm
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In the braking zone for the first corner at Blackwood my car is
pulling hard left for no obvious reason. I have tried different
setup up, different lines, brake bias, brake pressures, easing
off more, braking earlier and it still pulls left only at this
corner :-\. This does not seem like normal physics to me, I am
braking in a straight line with zero steering input when the
back end starts to go. ::)
(HTM) https://www.youtube.com/watch?v=Q_qxzMiotDM&feature
(HTM) https://www.youtube.com/watch?v=Q_qxzMiotDM&feature
#Post#: 4941--------------------------------------------------
Re: Confused and Frustrated
By: Marketcrash16 Date: October 21, 2017, 11:45 pm
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that happened to me as well, but it was because my camber was
significantly different on my left side from my right. I haven't
felt it since I changed it.
#Post#: 4942--------------------------------------------------
Re: Confused and Frustrated
By: Chad Brown Date: October 22, 2017, 12:57 am
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I don't have that specific problem. I know that I have to be
careful and brake with some control in mind. There are some
parts of the track with weird cambers that make the car behave
unpredictably. The start finish hill is one of them A person can
pretty quickly lose control of their vehicle if they are not
mindful.
#Post#: 4943--------------------------------------------------
Re: Confused and Frustrated
By: CJR33 Date: October 22, 2017, 3:42 am
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I had similar problems in this corner, there are three options
in setup to make it better:
1. Increase coast diff to a value between 60-70 %
2. Increase rear toe in to + 0,2 to +0,3
3. Soften the fast bump dampers at front and rear
I cannot make the race, had a horrible week with no time for
practice at all.
Next weekend should be fine, at least I am hoping that right
now.
#Post#: 4944--------------------------------------------------
Re: Confused and Frustrated
By: Tig_green Date: October 22, 2017, 4:40 am
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I have no such problem. Looks like you start braking in the same
spot as me. Maybe you should loose the brake a little earlier...
#Post#: 4945--------------------------------------------------
Re: Confused and Frustrated
By: Tech G Date: October 22, 2017, 9:07 am
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Thanks for the suggestions guys, I was hoping someone would have
something other than the normal suggestions. As you know I am
pretty good at setups and I know how to modulate the brake
pedal, so I also tried different braking techniques into this
corner, but that snap left pull is always lurking. Even when I
tried Rick's exact set up, he do not have this issue but I still
did, so I guess it's either driving style (braking in a straight
line 🤔) or maybe my equipment.
Oh well I guess I will just see how it goes and drive until this
strange issue takes me out. I would suggest no one try to pass
me on the outside here 😉.
#Post#: 4946--------------------------------------------------
Re: Confused and Frustrated
By: Scott Arrington Date: October 22, 2017, 9:47 am
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Probably a stupid question Chris,but have you tried to stay
alittle more to the right,not so close to that curb under
braking.There are some braking bumps there.I modulate the brake
pedal,on hard then half brake then brack on full brake.It is a
tricky section.If that doesn"t work,just for the sake of
knowing,calibrate your clutch pedal as your brake and see if it
still does that.Also could try to run the brake pressure down to
93.
#Post#: 4949--------------------------------------------------
Re: Confused and Frustrated
By: Tech G Date: October 22, 2017, 2:44 pm
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Thanks as always for the help guys and Scott special thanks for
the setup, race saver.
#Post#: 4954--------------------------------------------------
Re: Confused and Frustrated
By: Marketcrash16 Date: October 22, 2017, 4:11 pm
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[quote author=Tech G link=topic=408.msg4949#msg4949
date=1508701477]
Thanks as always for the help guys and Scott special thanks for
the setup, race saver.
[/quote]
Scott is the man. He has helped me countless times.
#Post#: 4955--------------------------------------------------
Re: Confused and Frustrated
By: Tech G Date: October 22, 2017, 6:23 pm
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So, because this bothered me so much, I did a quick analysis
between my setup that was pulling hard left braking into turn
one and the setup Scott sent me, which I then modified a little.
I was surprised how similar our setups were, mostly very minor
differences, the only significant differences where in the
spring rates, but i have summarized below the major differences:
Scott's
Mine
Front Springs 219
210
Rear Springs 175
201
Rear Slow Rebound 3
6
Rear Fast Rebound 2
6
The rear rebound does directly effect the cars behavior under
braking, the weird thing is that you would normally need a
higher number to slow the transfer of weight off the rear tires
and keep more weight on them under braking. So reducing this
number should have made the problem worst ::).
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