Unusually low MOT_THST_HOVER

ArduCopter Copter 4.6
1

I’m working through initial tuning of a new quad-copter I’ve designed.

PXL_20250223_175100432
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The MOT_THST_HOVER value is 1.35 - which is below the stated lower limit of 2.0.

eCalc shows this copter to have a thrust to weight ratio of over 3.5 - which seems to me like it’s got enough power to warrant low power for hover. (eCalc misses the mark on flight time - about 2 minutes two low, and hover amps at about .4 amps high)

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I don’t remember having such a low value on MOT_THST_HOVER on other copters. I’m wondering if there’s any other settings I should consider looking into other than what the initial setup tool suggests:

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So far the copter performs well - and works pretty well with these default PIDs. Once I get the notch filter going and do an Auto Tune - I hope it’s even better.

Thanks for any suggestions!

Here’s a log for a 16 minute backyard hover test.

2

Nothing unusual. I have a few that are 1/2 that. Standard tuning applies. You probably know by now that the limits shown in MP are not applicable to all, or any, craft.

I don’t think so. Output oscillation typical of default PID’s in most craft.

RCout
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Easy to fix by lowing the rate PID’s. See you are using the Bdshot firmware but no ESC RPM in sight.

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