Corona DS339HV Digital Metal Gear Servo 5.1kg / 0.13 Sec / 32g

Excellent servo with metal gears good centering and speed.

This servo is very strong and all the gears inside of it is indeed metal. VERY GOOD SERVO FOR THE PRICE.

kleiner als ein std. servo, ansonsten gutes ding.

I have some of them already in use. Good, smooth running servo with good centering. Recommended product for all that need midsize due to low space.

Purchased and received four of these servos with the intention of using them in an EF1 Pylon plane (similar to the Invictus sold here). Bench tested and found all four to function properly with ESC BEC set to output 7V. Servos seem fast, seem to have good resolution, have plenty of torque to work against opposing forces, seem to center well and don't buzz when at a neutral position and an opposing force is applied.

I've not installed or flown with them yet but will update the review once I have. For the moment these seem to offer good performance at a great price when compared to equivalent servos available elsewhere.

Die Servos sind TOP.Leider haben die die Servohebel zu viel Spiel auf der Welle.Ich mute mit Hitec-Hebeln nachbessern um das Spiel zu entfernen.

Good electrically but the plastic case is far too brittle. I've now had 5 of these shed their mounting lugs when installing or removing them. A great pity as they are otherwise very good.

Very strong servo, however there have excessive play of the arm & the gears.
In addition the plastic that hold the bolts is very soft and broken easely

servo is great fast i use it for diy landing gear and it supports a 450 quad at 2800g with batteries and 2 axis gimbal and go pro.small strong reliable i had 2 hard landings and perfect funtion

Yes its ok but its smaller than the other std. Servos.... works good