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for those interested, here is a graph of my fastest lap showing lateral acceleration derived two different ways:
1. on board accelerometers (red line)
2. calculated from GPS polling data (green line)
the RacePak polls gps several times a second. there is some latency and interpolation. this is why the green line lags the red line by a little bit. magnitude, though, is very comparable between the two. the data is accurate.
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