Trail Braking article/video
#136
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Having driven a ground effects 3-liter F1 car on track, they are responsive, for sure. Cars in Sir Jackie's day? Far less so. Cars today? Insane!
Great vid.
#137
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I also use this tool quite a bit and recommend it highly, especially when combined with automatically synced video in VBOX products and software, as well as MoTeC i2 Pro.
https://vboxmotorsport.co.uk/index.p...-gain-lap-time
https://vboxmotorsport.co.uk/index.p...-gain-lap-time
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#138
Agreed.
What if braking slightly earlier and with slightly less pressure would upset the car less, bring it to the desired balance (weight distribution) faster and allow for a higher speed (Vmin) through the turn? Is the consensus that a shorter (hence, later) 100% threshold brake stab is preferable to this in every situation, without exception?
What if braking slightly earlier and with slightly less pressure would upset the car less, bring it to the desired balance (weight distribution) faster and allow for a higher speed (Vmin) through the turn? Is the consensus that a shorter (hence, later) 100% threshold brake stab is preferable to this in every situation, without exception?
#139
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Originally Posted by hf1
What if braking slightly earlier and with slightly less pressure would upset the car less, bring it to the desired balance (weight distribution) faster and allow for a higher speed (Vmin) through the turn? Is the consensus that a shorter (hence, later) 100% threshold brake stab is preferable to this in every situation, without exception?
Hence the reason I mention it
#140
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#141
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Here are some educational and inspiring videos as an antidote to all of the theoretical talk:
https://www.youtube.com/watch?v=SXriGOrUwHs
https://www.youtube.com/watch?v=Wukn_CgaU4A
https://www.youtube.com/watch?v=SXriGOrUwHs
https://www.youtube.com/watch?v=Wukn_CgaU4A
same driver.... different car.
no paddle shifts and other aids.
#142
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A period of instability is usually provoked by not respecting the platform and asking it to do something it's not capable of doing or accepting, almost always upon initial application.
Nearly always, there is sufficient time and distance AFTER this period to decide how, when and in what relationship to the steering input you want to "pick a speed" and release the brakes.
Most club drivers drop speed from the turn-in to at least the apex, but usually it's because they've released the brake prematurely, the nose has come up and they're not yet at the point where they can go to throttle.
Any significant throttle app that is premature can aggravate this and the vMin trendline can tell you a great deal.
I used to think striving for higher vMin was on the important end of the equation, but the data has proven me wrong. Higher initial vMins are often a result of premature release (distance) and delay throttle app (time) because of where the car is in the corner. Either way, they're a lap-time killer if the vMin lasts too long!
Witness Dan's superb E record traces at Watkins Glen, in that thread. His vMins are high, but more importantly, he ends and begins almost immediately his decel and accel. The "v-shape" in a speed versus distance graph. Super clean and his Bus Stop and Toe are terrific...
Last edited by ProCoach; 06-11-2017 at 09:44 PM.
#143
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Deleted Post
Adam,
your post was deleted because you are advertising. In order to do so, you need to become a site sponsor. So, comments are fine, but references to your site and or books are not.
Best,
your post was deleted because you are advertising. In order to do so, you need to become a site sponsor. So, comments are fine, but references to your site and or books are not.
Best,
#144
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I didn't watch the whole video he had posted, but did watch the beginning. I also found the video I believe he posted and I would not call either advertising. IMHO, the videos are informational and censoring them is a disservice to this thread.
#145
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I've watched the entire video, and I saw no commercial content in it. It's educational, directly pertinent to this thread, and freely available on youtube.
Since I have no affiliation (just an appreciative fan of Adam's work), perhaps I can post it, and mods can watch it in its entirety before judging whether deleting is justified:
The telemetry data starting at 4:49 is very revealing. The deep trailbraking and tighter line during corner entry enables the car to pull ahead of the car on the alternate line without trailbraking, which never catches back up.
#146
I used to think striving for higher vMin was on the important end of the equation, but the data has proven me wrong. Higher initial vMins are often a result of premature release (distance) and delay throttle app (time) because of where the car is in the corner. Either way, they're a lap-time killer if the vMin lasts too long!
-Mike
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#148
If people want to read my books great, but I'm not here to sell them. I'm here because a few different people invited me to post here and I stayed because there are a lot of great discussions and I like talking about this stuff. I can't believe I went so long without knowing about this board actually. I'll avoid posting any links in the future though if that is the issue.
#149
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You can read all the books you want, listen to all the paddock chatter you want, watch all the video you want, but in the end, you need to KNOW what you're doing to know WHERE to go...
Data is not a tattle tale, it's not judgmental, it's just WHAT happened.
The single most striking thing to me in the last decade plus of really focusing on club/track day/DE drivers is how inaccurate they are in remembering what they've done. It's not a problem, it's just normal.
That's where folks should start, by examining in detail what they're doing NOW, formulating a prime and alternate strategy for a fundamental skill execution in ONE section of the track and MEASURING.
If you don't have data, just listen to the engine note in the video. If it stays the same for a "count" (one-thousand, two-thousand, three-thousand..." or heaven forbid FALLS during the entry and middle of the corner, you have an opportunity for improvement!
It's not easy, but there are plenty of tools that can help...
#150
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And it is a great community. Welcome!