Autocross and Lapping videos with your 4C

Last run of last weekend's autocross in Farmington, NM


I think I had been running too high of pressures-- 32/30 (F/R, warm, adjusted before each run) most of the weekend-- more in the front to avoid the sidewalls rolling over, despite the weight bias to the rear. For my last two runs I decreased it by 1 psi each time, for 30/28 psi the last run. This resulted in knocking off 0.5 seconds from my runs each time per 1 psi. These pressures seem crazy low for autox, but it's allowable because of the low weight of the car. On 3500-4000 lbs cars, I've seen the need for 42-45 psi in the front to avoid wearing the sidewalls.

Of course, now that I'm watching the video, I see many other places I could have cut some time. I think I'm at the point of knowing the car enough that reviewing the videos between runs could be beneficial.

Here is an older video of me at the road course on my 320 hardness street tires having a little 100 mph wobble fun! It happens at almost the beginning of this short video.

Perfect storm of mistakes. I had just passed someone and did not properly prepare for this high-speed short radius turn. Also the turbo boost came on hard and I wasn't driving as smoothly as I should.

So the combination of these things caused my rear end to come out quite a bit at about 100 miles an hour!! That will wake you up!

Because of the high-speed involved probably the sketchiest thing that's happened to me. But I was able to use some good corrections skills to pull it back in and continue on. Must've been a great show for the people behind me!

Important: If it would've swung out even more and I didn't feel comfortable trying to save it I would've just given it up and put on the brakes hard and spun out and stayed in the middle of the track. A good balanced mid engine car will usually stay in the track if you give it up at the right time and don't try to be a big head and stubbornly continue to save it. Got to know when to give it up to stay safely on track. Yes it's embarrassing spinning out but much better than wrecking your car!

I just love the sound of the tires!

I need a little help... What are you guys using for the videos and how do you get them stable? I have Harry's lap timer and I'm looking at getting a GoPro to add video, but I'm just a little confused by it all. The main purpose is to improve my driving, secondary is just for play/fun. I want to record the intercom audio so i get the instructors comments. The sessions are roughly 20 - 30 minutes. I have a Stilo intercom system with audio output, so the GoPro can record it (external mic input). My delema is which GoPro would be best, but still economical. BlackFriday will have the Hero 4 Silver for $199 and Hero 5 Session for $299, and Hero 5 black for $399. I'm tempted to get the silver, as i can easily/cheaply add power and audio. (My understanding is that the Hero 4 has a tendency to auto-power off at the wrong times, which is why I assume most of the drivers in our area power them with a cord even roof mounted cameras). Is there any reason to get the newer Hero 5 versions? Due to the length of the sessions, i don't think 4k video is an option due to memory space.

So how do i get the video from the camera to my computer with the data overlays (I have the OBDII connector already)? Is one version of Hero easier?

Any help is appreciated! Thanks