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@viro - That tank slapper (gravel run) was due to brake technique. You were almost at 100% brake and already turning into the corner. Can't drive like that with a mid engine car. It also shows up in the second wet video at about 30seconds. You are braking in mid corner. This will remove all weight of the back end and you will loose the back end (oversteer). Most of your braking must be done before you turn in, and trail off on the brake. You can see my brake trace coming in to a long high-ish speed sweeper. Quick on, slow release off. I'm not perfect, but work on that trail braking around the first 1/3 of the corner.


121053



Couple of items of advice in the wet.... First stay off the paint. Stuff is slick as ice in the rain and is is usually a quick guarantee for a spin. Second, chuck that all weather mode... Learn to modulate the throttle and gear selection to maximize traction while in your normal operating mode. I have lots of friends that just leave their high powered mustangs in 4th gear and zip around that way. Finally, if you really want to get better at correcting the slides slap her in race mode and drive the "dry line". That track is remarkably sticky in the wet. My local track is like a sheet of ice, but fudge is it fun to slide around.


Now I type all of this... I'm not a professional driver, and probably not that good of one either... I'm just trying to help out, and still learning myself, so take it with a grain of salt. A week or two ago, I had a virtual coaching session with a professional driver. He overlayed my VBOX data with his, and I have to say it was a complete eye opener on just how smooth a true professional is. We were working on throttle application coming out of the corners. I'm trying to get the video, and i'll take a quick screen grab on just how different his skills are versus mine... Nite and day...
 
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@DrPyro2k
That braking ui element is calculated and not actual. It uses the phones accelerometer to guess if your braking or not. It gives a lot of false positives and is only represented as a 1 or 0 which is on or off. So you can't see the trail braking I'm doing either. You can also see why it would cause a spike mid corner as the weight transfers in the car.

It wasn't caused by braking mid corner, I would never do that especially not in the wet. It was caused by lifting off the brake a bit to early then over rotating the steering wheel and adding a little throttle. I was experimenting with adding a bit of oversteer to get the car to rotate faster in the turns that lap. There's a kinda sweet spot on the 4c in the steering where you turn a bit more than you think you should and something magic happens. I think it's because of the caster in the front. But I was going a little too fast for it to work that time and it bit me. In a way though it's still a similar car dynamic to what you where saying. In that the weight was still on the front and the rear was light so when I turned the wheel the rears came around. Which is what I wanted but I entered the corner going to fast and aggressive.

I've also done a bit of wet driving and feel like it's the best time to get to know your car as the limits of grip are much lower. It's also a hell of a lot of fun. My last time having the RS out I got a pretty good lap in with an instructor in the passenger seat and we were doing 4 wheel drifts in the turns. So much fun. I'm not that comfortable with my 4C yet though as I've only had it on track 3 times and the first 2 it was raining. lol
 

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@viro - Ahhh, that explains some of the weird behavior on how quickly it shows you braking (and the lift off). The wet is always the best way to learn the dynamics. You can also throttle steer the 4C quiet easily without having to turn the steering wheel too much (once you have a good alignment and setup).
 

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Also finally got my rain sessions posted to YouTube. I was running the car in all weather mode. It realty restricted the use of the power while turning the wheel but the car stayed on track.
Nice driving Viro! I recognized the older white 911 you passed at the beginning of the video, I passed him the next day a couple times! The outer loop is a blast!
 

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Also finally got my rain sessions posted to YouTube. I was running the car in all weather mode. It realty restricted the use of the power while turning the wheel but the car stayed on track.
Thanks for this, viro.
I needed some inspiration and this was great to see.
Very smooth driving. Masterclass for tracking in the rain.
The track doesn’t seem to have a “wet line”, except I think you brake earlier then you likely do in the dry? It certainly keeps the car very stable in the corners.

Great stuff!
 

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Onboard POV of GMS prepared Alfa Romeo 4C on a Hrusica - Hill climb event organized by Heartuned. Sub-optimal car setup, with room for improvement, but we take responsibility (too many heat cycles on tires, lack of LSD). Still it ended as a solid drive which secured us 1. st place 200 - 321 HP class and 3rd overall, all though it didn't feel the best. Best time 1:38.390. We look forward for next event.

Here is onboard:

 

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A funny rainy day with semi slicks @ circuit de Bresse

Kudos for not sitting it out! Many people at track days either leave early or sit out when it rains. They miss out on the opportunity to really see how their cars do in the wet (and get surprised by the amount of grip actually available). You didn't ask for it, but I would add a little more padding during a wet session to the grass. Some of the braking zones you are awfully close on the left side (at least from the camera's view). It doesn't take much to accidently put a tire off.
 

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Kudos for not sitting it out! Many people at track days either leave early or sit out when it rains. They miss out on the opportunity to really see how their cars do in the wet (and get surprised by the amount of grip actually available). You didn't ask for it, but I would add a little more padding during a wet session to the grass. Some of the braking zones you are awfully close on the left side (at least from the camera's view). It doesn't take much to accidently put a tire off.
Thanks.
It’s been all raining all day long so there was no point of waiting for better conditions, only regret was not putting the road tires which were sitting at home.


Sent from my iPhone using Tapatalk
 

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@Mahjik - He even put tires on the painted rumble strips (granted on the inside). Not something I do lightly at my track in the rain, I have lost it when I have barely put tires on the paint in the wet.

@Matt - Nicely done sir, so very good recoveries. My personal favorite is wet + race mode + semislicks so I can go ice skating around the track and laugh the whole time. I did that this past weekend (following a 600 hp Mustang), we were both having so much fun! His tires were dead, so his back end was stepping out at the lightest touch of the throttle. My tires were brand new, so I was able to find and hold much better grip, but still a blast.
 
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@Mahjik - He even put tires on the painted rumble strips (granted on the inside). Not something I do lightly at my track in the rain, I have lost it when I have barely put tires on the paint in the wet.
That is a fair point. I've seen that it does vary per track how slippery those surfaces get.. There are some tracks I've been on where the curbing when wet, is still fairly usable. I have also seen some tracks where you stay away from the curbing even in the dry. ;) You are correct, 90% of the time you will want to keep off the curbing in the wet.


Something for those who have not tracked in the rain... Depending on how much rubber is on the track, you'll have more grip (in the corners) where the rubber is 'not' laid down. So off your normal line. The laid down rubber will make the water bead up and make the surface slippery. So driving were the rubber 'is not' will allow your tires to use the pavement and not the rubber for grip.

However, it is a balance. Driving off the normal line will typically be slower so you have to experiment where being off line in the wet allows you to carry more speed than having less grip and being on the racing line. It will vary per track (and per corner).
 
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Some videos from this past weekend. Not my best times, but was working on more steady accelerator application. Still not really where it should be.....:(


 
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