986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - AOS Smoke Bombs, spins, a new fast lap at Roebling, and one that was a second faster

steved0x · 01-31-2017, 02:05 PM

I had a good trip recently with Florida Crown PCA region at Roebling Road, I hadn't run with them for over a year due to work and family conflicts.

This weekend was interesting due to some unusual cars, and a Cayman (possibly more than one) that were smoking the track repeatedly with AOS smoke bombs.

If anybody every wanted to see what it looks like when you overwhelm the AOS, here you go:

Fast forward to 8:53 to see it along with a pretty spectacular spin that went on and on, I wish my phone wasn't blocking the view so much... The car that spun was some sort of 90's Honda station wagon and as the weekend went on, got faster and faster and passed most of the cars in my group (White intermediate solo)

https://youtu.be/es8UQcvkokg?t=8m53s

Want more smoke bombs? Here are a couple more...

Go to 7:22 and also to 10:27

https://youtu.be/ENVc9f3a5PY

I think I have some more the following day but that was too much video to sort though to post here...

One cool thing about the video above is that I mounted a camera facing backwards on my trailer hitch, and it got the rear shots but also some sound from the exhaust (Beluga Racing Exhaust). It is overdriving the mic on the camera pretty bad, but I blended in some of the audio so you could hear the downshifts, and some of the burbling and crackling on overrun.

Here is the rear view from my final Sunday session, where at least for the first part, the exhaust doesn't overdrive the mic. Also in the prior session (about 2 hours before) someone (GT3?) oiled down the track pretty good and it took forever to clear it. So you will see a lot of dust from the oil dry in the first laps.

https://youtu.be/psGRZsHwgzc

One highlight of the weekend is I set a ton of laps that were all faster than my previous personal best, and one lap where I was chasing a GT4 and I was on track to beat my new PB by almost a full second and got jammed up right before the final corner by a Miata (or possibly the GT4 not realizing the Miata was going into the pits)

This was also my first experiment with using an external video with Harry's Lap Timer (as the Micro SD card in my phone apparently corrupted and I didn't get any phone video for the first two sessions)

https://youtu.be/fyDNw2ar--s

One other experiment I was working, is a theory that a tire is at the limit when a change in direction does not product any additional force. For example if I am understeering my front tires are past the limit and turning the wheel more does nothing. I was testing this out in some corners by bumping the wheel to see if my front tires were near the limit. In some cases I was and nothing much happened, in other cases I was way below the limit and rocking the car like a barge. I don't know where I am going with this but it was an interesting experiment for me to try - testing with inputs to see if I am at the limit on my front tires or not. You will see me bumping the wheel in some of these videos, and that's why.

Also got to meet a fellow 986Forum member: swiftmotoring with a Red 986 with a silver hardtop which made me wish I had brought my silver hardtop...

Dang it I thought I had a better picture that showed our cars together better...

Edit: you can see the white Honda in the background of the photo. This is the car that passed most of the white group...

01-31-2017, 02:05 PM	#1
steved0x Registered User Join Date: Dec 2012 Location: FL Posts: 4,144	AOS Smoke Bombs, spins, a new fast lap at Roebling, and one that was a second faster I had a good trip recently with Florida Crown PCA region at Roebling Road, I hadn't run with them for over a year due to work and family conflicts. This weekend was interesting due to some unusual cars, and a Cayman (possibly more than one) that were smoking the track repeatedly with AOS smoke bombs. If anybody every wanted to see what it looks like when you overwhelm the AOS, here you go: Fast forward to 8:53 to see it along with a pretty spectacular spin that went on and on, I wish my phone wasn't blocking the view so much... The car that spun was some sort of 90's Honda station wagon and as the weekend went on, got faster and faster and passed most of the cars in my group (White intermediate solo) https://youtu.be/es8UQcvkokg?t=8m53s Want more smoke bombs? Here are a couple more... Go to 7:22 and also to 10:27 https://youtu.be/ENVc9f3a5PY I think I have some more the following day but that was too much video to sort though to post here... One cool thing about the video above is that I mounted a camera facing backwards on my trailer hitch, and it got the rear shots but also some sound from the exhaust (Beluga Racing Exhaust). It is overdriving the mic on the camera pretty bad, but I blended in some of the audio so you could hear the downshifts, and some of the burbling and crackling on overrun. Here is the rear view from my final Sunday session, where at least for the first part, the exhaust doesn't overdrive the mic. Also in the prior session (about 2 hours before) someone (GT3?) oiled down the track pretty good and it took forever to clear it. So you will see a lot of dust from the oil dry in the first laps. https://youtu.be/psGRZsHwgzc One highlight of the weekend is I set a ton of laps that were all faster than my previous personal best, and one lap where I was chasing a GT4 and I was on track to beat my new PB by almost a full second and got jammed up right before the final corner by a Miata (or possibly the GT4 not realizing the Miata was going into the pits) This was also my first experiment with using an external video with Harry's Lap Timer (as the Micro SD card in my phone apparently corrupted and I didn't get any phone video for the first two sessions) https://youtu.be/fyDNw2ar--s One other experiment I was working, is a theory that a tire is at the limit when a change in direction does not product any additional force. For example if I am understeering my front tires are past the limit and turning the wheel more does nothing. I was testing this out in some corners by bumping the wheel to see if my front tires were near the limit. In some cases I was and nothing much happened, in other cases I was way below the limit and rocking the car like a barge. I don't know where I am going with this but it was an interesting experiment for me to try - testing with inputs to see if I am at the limit on my front tires or not. You will see me bumping the wheel in some of these videos, and that's why. Also got to meet a fellow 986Forum member: swiftmotoring with a Red 986 with a silver hardtop which made me wish I had brought my silver hardtop... Dang it I thought I had a better picture that showed our cars together better... Edit: you can see the white Honda in the background of the photo. This is the car that passed most of the white group... Last edited by steved0x; 01-31-2017 at 03:58 PM.