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12 X 6 or which props?

Posted by estebanflyer on May 27, 2011 at 2:42pm

I want to make my quad more stable. The idea is to set everything up the best way possible and then use the Ardupilot board.

I am using a GAUI GU344 triaxial gyro for now. The distance between opposite motors is 120 cm (47 inches). It's total weight is 5 pounds (quite heavy, since I'm using a 400 grams battery per motor)

The 60A ESC's are set to the lowest advance timing (1/5) and a start up range of a second, being the standard a timing of 3/5 and a start up range of 0.25 second.

The propellers are APC 12X6, and no matter how much I try, the quad is never dead stable and it always feels really sensitive. It also changes angles weirdly, not really listening to me. I use dual rates, exponentials... It never feels right. The 'gain' on the GU344 is set really low, if i increase it, it wobbles. the frame i built as exact and precise possible and the angle of the motors is zeroed out.

 

Can anyone tell me what I am doing wrong? Any wild guess will be appreciated.

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Replies

  • Tom in NOVA May 27, 2011 at 6:47pm
    In my non-expert opinion concerning the props, may want to try use a 12x4.5, 11x4 or similar prop that would give you more stability during the RPM range. Make sure they are sized to your motor.
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