TGY-390DMH High Performance Digital Servo (Extra Strong) 5.4kg / .11sec / 22.5g
Weight: 22.5 grams / 0.79 oz.
Dimensions: 29 x 13 x 30 mm / 1.14 x 0.51 x 1.18 inch
Torque @ 4.8V: 4.6 kg/cm , 64 oz/in
Torque @ 6.0V: 5.4 kg/cm , 75 oz/in
Speed @ 4.8V: 0.14sec / 60 deg at no load
Speed @ 6.0V: 0.11sec / 60 deg at no load
Spline Count: 25
Twin ball bearing and full metal gears. High performance servo recommended for Airplane & Helicopter (Tail)
Unit Weight (g):
bought 3 of these they are smooth, quiet and very precise. Power is very good as well. absolutely no gear no slop. Installed them on my 60 size F3A one for each elevator and one for the rudder. I will buy more! Thanks HKCompared to other HobbyKing servos, this one is on the more expensive side at $27. Getting such good reviews, I wanted to try it out in my Proud Bird EF1 plane that does about 100mph. One of my Futaba S3115 servos (on the aileron) died (for the third time) and so I decided to swap out all three servos and replace two of them with these and one with a Hitec HS-5085MG digital which I had from a previous plane. The Hitec is the same size and costs about $7 more, with slightly worse specs, so very fair comparison.
I've got the Turnigys on the ailerons (single servo) and the elevator servo, the Hitec on the rudder. These turnigys are the best centering servos I've ever used. The Hitec is okay, but it just doesn't center that great, and that's why I chose it for the rudder instead of aileron (one servo for both) or elevator. I will be buying these servos over the Hitecs every time. Great resolution, feel robust, and most importantly, they center perfectly EVERY TIME whether coming from left or right. These make my flying motr precise and I'm glad I'm using them. Vastly superior to the Futaba S3115 servos (which cost $22) and superior to the Hitec HS-5085MG($34) due to the centering, which I consider to be about the most important quality in a servo. Straight up, these servos are amazing. I will buy another to replace the Hitec on the rudder now that I know how good these servos center.It fits perfectly in the MERV, with a little cutting in the holding arms. It is strong and fast, the gears don't strip as the Traxxas's 2080 servo. However, sometimes it feels like it is not centred, but I could be wrong. The servo spins the opposite way the Traxxas 2080 does, so it needs the servo channel to be reversed via the controller.
I use four of these servos in my Extra 260/50 " for over 1 year, with no problems.
Very good servo with virtually no play in the gears .
I just ordered four more for my Extra 300/60 " from Extreme Flight.
Good servo for a fair price.
Highly recommended .God servos. Strong, reliable, decent resolution and seem to center well. Currently using them in an EF1 Proud Bird for ail/ele/rud servos and have used them as ail servos in other EF1 airframes.Direct drop in for the traxxas mini line up. I use this on a track only MERV. Servo centers nicely and holds center quite well for such a small servo. After a full pack the servo is barely over ambient temperature, about the same price as a traxxas 2080 servo, but more torque and metal gears. One thing to note is this is not a water proof servo.Un servo sur deux fonctionne, celui qui ne va pas reste bloquer au neutre par intermittance, panne difficile a identifier et rendant le servo inutilisable, testez les bien...I have four of these servo's, all on the elevators and they are very precise and, for their size enormous torque. One set has hundreds of flights on it and no issues but I'm wondering if anyone has discovered where you can get a replacement gear train set for this servo as I wouldn't mind replacing the older sets gears just as a precautionary measure? Cheers chaps (and lasses).Great servo for traxxas 1/16 e revo************ ********