Veypor

[wingerr]

This is an overlay of three runs; There's an odd bump discontinuity in the speed near the end of each run that shows up. It was just a continuous run in a single gear, so it should have been smooth throughout the run.
I thought it might be the speed sensor glitching, but the run in the higher gear doesn't show the same glitch at the same speeds, so it's probably not speed related.
Is this a known glitch in the calculations of the chart?
Seems like it's maybe missing a chunk in the time, but still recording accumulated distance, which would calculate a higher speed as a result.

[wingerr]

Thought it might have been the speed sensor glitching, but after fixing the speed sensor circuit, it still has the same ledge on the chart, so it appears to be something in the software handling of the calculations.



Any plausible explanations for this? (No, it wasn't the nitrous kicking in- )

[wingerr]

Downloaded the data to a csv file, and looking at the data, it's the speed recording that shows the glitch. At a single sample, the speed reading jumped 10 times the amount from the prior sample, and then the next sample showed the normal increment again.

It's as if it all of a sudden lost ten samples of the speed recording, and spliced the rest of the data right after it.

The time and distance values show normal values; it's only the speed readings that show this burp.

Maybe it's a problem in the unit's memory or something; very odd...

[wingerr]

This shows the rpm vs. speed, all recorded in the same gear, so something's off in the speed data, because the rpm line is smooth.

[wingerr]

Here's a thought, just to add to the soliloquy-

Could the data capture rate be changed to fix this glitch? The sample rate is 25Hz or 40msec on the data captured, maybe if it's changed either for a slower rate, it wouldn't drop data. Maybe the memory transfer is unable to keep up with the data.