NASA NW Region
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The g-meters are with the phone's internal accelerometers, so it's decent. The speed and position is mostly through GPS, and most phones only sample gps data at 1hz. It's decent for overall lap times on a track, but not great for much else, and might not be accurate enough for autox. The speed is basically worthless. It'd be better to mount your camera behind your headrest so you can see your speedometer. You can get standalone gps sensors to work with harry's but they aren't great and it's kind of complicated. you can get standalone 5-10hz gps to work with trackmaster pretty painlessly.
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very nice, i will have to give the R's a try on the next tire change. I've looked at other potential dual duty tires like RE11s but reviews always bring me back to the AD08's.
Putting them to good use at NJMP:
Putting them to good use at NJMP: