Reviews for Spektrum RC A4020 Micro Digital Aircraft Metal Gear Servo [SPMSA4020]
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Monday, Sep 19 2011 (about 5 years ago)
Spektrum RC A4020 Micro Digital Aircraft Metal Gear Servo
Not recommended. Slow and always hesitating. This is not a 0.11s servo, in no way does it compare to my Futaba S9071SB(same speed spec). When slowly moving the stick on my T8FG, the servo arm trembles here and there. Internal check shows poor solder joints, looks very similar to my Emax digital servos which do the same trembling thing. None of my other servos do this. Control boards are exactly identical to the Emax. The PP package box does look&feel good though, which will make a nice screw box. This is a rebranded & repacked "cheapy" Emax. I replaced the control board with a PCB from my stripped Corona DS939mg and it works well now, though still slow.