Quote:
Originally Posted by crogthomas
Great stuff. I was about to try doing something similar myself to see how close to the limit of the AMM I am. My logger only reads at 10Hz though, so I won't get such detailed information. I may try finding a better logger. What would you say would be the minimum sample rate I could get away with?
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Depends on what you want to do. If you just want to know if your AMM is maxed, the info on TB seems accurate (At 15 psi with a 15g, the stock 016 AMM is maxed by 3500-4000 rpm). Honestly, what I'm playing around with is interesting, but is probably overkill for a 160k tractor motor running 15 lbs of boost. For checking sensor function, etc, a low data collection rate is probably fine. If you want to start looking at ignition mapping, etc, you need to have a data rate above what you're trying to measure. For example, 6000 rpm is 100Hz. If you are measuring crank rotation, you'll want a minimum of 360 points per rotation or 36kHz for 1 degree resolution.
That said, check out Labjack.com They aren't plug and play data loggers and they're not exactly cheap, but I'm pretty impressed with what they can do.