Yet Another HPR Video

Sunday, April 29

It’s time for the spring running of Emich’s track day at HPR. I signed up for the afternoon sessions only. It’s a good bargain – four half hour runs for $85. It’s always a crowded day because I’m not the only bargain hunter. This year it sold out. But I figure many of the folks who sign up for the entire day leave early so the last couple sessions will feature a lot less traffic.

Today it seemed like the mix of cars was a bit more upscale than in the past – the vast majority of the cars were new Mustangs, Porsches, Corvettes, and Camaros and not so many older cars. In fact, I don’t think there were more than a handful of cars older than mine.

Scott and I drove out together and got there just in time for the drivers meeting. When we pulled in, I figured we’d park close to the pavilion so we wouldn’t be late for sign-in and the meeting but as we went by the carports Ryan flagged me down. There were two slots that morning entrants had paid for, so we snagged them.

The runners

So the Lotus contingent for the day was Ryan, Scott, and me. Unfortunately, Ryan again had injector issues. Not the same injector as last week, but evidently the same root cause. He thinks he has the solution and expects to be ready to go for next time. I hope he’s correct.

Ryan already in the trailer

Not much else to report.

I checked the settings on the lap timer and found where to connect it to the OBD II dongle, so I collected a limited amount of engine data. And I finally bought the unlimited version of Race Render 3 for making my videos.

I’m quite happy with it so far. It greatly simplifies the process. Before, I had to use my video editing software to do the picture in picture. It takes it about two and a half hours to complete that process. One thing that bugged me about it was that the rear-view camera isn’t a mirror image. That is, when I get passed by a car on driver’s right, the car goes to camera left. I couldn’t find any option that let me flip the image.

Race Render 3 does the horizontal flip of the rear view camera automatically. And it does the rendering in a few minutes. It also makes it fairly easy to sync everything up. I advance the main video to the first time I cross the start/finish line, adjust the rear camera to the same point (it will be off by several seconds – the time between starting the cameras). Then, for the data, tell it to find the start of lap 1. Bingo – all synced up.

The lap timer handles the GPS, so that’s the source of position and speed. The OBD supplies RPM and throttle position. I can also get coolant temperature and intake temperature. I may play around with this data next time. Throttle position percent comes through in the range of 14.9 at the low end and 77.6 at the high end, rather than 0 and 100. I edit the gauge display to adjust for that and it comes out okay. The ODB also records speed, so I may play with using that rather than the phone data. I haven’t checked yet if they match.

I’m open to suggestions for the display, so feel free to leave comments.

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