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There are some metal gears, and some plastic. After 15 minutes of tricopter flying, the plastic gears on the output shaft was worn out out around midpoint. For tricopter usage, I would recommend something a bit more expensive.
The motor of the servo which causes arm movement recives signal from reciever 30-50 times/sec for analog servo and 300- 500 times/sec for digital this determines quickness of servo, which is termed as frequency of servo. for a given servo a frequency is a fixed value.
also has stronger holding power especially for small movements. there are some good discussions online google "digital vs analogue servo" do some reading if you want details on differnces and how they work. some applications digital or analog servos are better. you will bettery understand how servos work.
It may do, but for how long? It may last forever or fail, there is really only one way to find out. Although I wouldn't recommend it in a critical model, if it's not going to get damaged by a failed servo(boat or car) then give it a go, they aren't that expensive.
Am I correct in assuming the main gear is plastic? It sure looks like it in the picture. Surely this would be the most important gear to be metal in a metal gear servo?
You are incorrect. The output gear is aluminum that has a black, anodized coating. There's a very important but small clue to help prove my claim* Look at the inset photo and the small bits of hardware. See the black screw? That's a 'machine' screw, has threads intended to fit into a hole with per-existing, fine threads. If the output gear was plastic, that screw would have a courser thread profile a self-tapping screw would use. I can tell, I work with machine stuff all the time. I'm also going to order some of these servos right now!
After reading many other reviews for this and the similar HD-2213MG, I may have to *eat my words* regarding the material of the output gear. Many users say it's plastic! must be the output shaft is metal and pressed into a plastic gear, donno.
You must have better eyes than me if you can see that the screw is a machine screw from that photo. Looks more like a self tapper to me, we will see when they arrive.
Self-tappers have a more defined taper vs the more parallel sides of a machine screw. Don't know what browser you use to view this page but Firefox lets you zoom in by pressing and brings that picture larger. "We'll see" is right because I just ordered the higher torque version of this servo. Take care.
My key-press combination notation wasn't allowed! Try again...
...zoom in by pressing the Control and Plus keyboard keys and brings that picture larger.
Reducer material at the mechanism the metal. I checked. These are very good mechanisms. I recommend to all. Very exact and very strong and inexpensive.
Confirmation. Main output gear is Not metal nor nylon type plastic. Perhaps POM type material. Great servo,quick ,precise ,enough torque for quick response and agile FBL 450 (KDS Ebar ).Like all servos ,whether plastic or metal, will strip on hard enough impact.Had about 50 flights (sports,mild 3d )still great with nil slop. Top value,
I`ve used one as a rudderservo on my 450, it holds in normal but is a bit too slow in idleup. Replaced it with a Align ds420 and noticed a huge inprovement. Search for a faster one is mho..
I got 4 of these for a home build 60" slope and DS glider. They're accurate and have no slop and perfect centering. But they buzz loudly under the slightest load, and chew up quite a lot of power ... about 500ma for about 40mins flying. They are not fully metal geared. The big gear on the splined shaft, below the bearing, is resin. I had a huge smash into a tree and all 4 broke on that gear. I'm sad to see that there doesn't seem to be a gear set available.
There is a gear set available. I have four as spares right now. Not available from HK. Nice servo have four installed in each of three 50in class planes and have 100's of flights on them. Bought gear sets after a crash.
Customer Reviews
Overall Rating
John Palesch
likes
Value
UNRATED
Quality
UNRATED
25 thumbs up!
This little servo is super. I stripped out a weaker rudder servo and changed it out with this small and light powerhouse. I could not believe the strength of this servo it saved my plane while doing knife edge. This is one fantastic servo.
These servos are really great. I am using these on several planes. On a 2 meter glider for ailerons and elevator and on an electric powered plane (Graupner Kadett) on ailerons, rudder and elevator. The servos are very precise, have a good centering and are pretty quiet. When i took it apart i noticed that the gear isn't completely made of metal. It's a mixture of metal and plastic like you can see in this picture: tinyurl.c o m/powerhdservo
I am also using the small blue version with plastic gears and the bigger red version. They all perform great. Strong and small. Just the way i like it.
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Overall Rating
David Parrotta
likes
Value
UNRATED
Quality
UNRATED
17 thumbs up!
I'm running these servos in a 35" Wild Wing. The power setup draws 32amps @ 344 watts. It approaches 90mph level and over 100 in a dive. These guys hold up to high rate loops after 100 mph dive...
To say the very least I'm very happy with them.
This servo rocks!!!! The gears are super smooth and don't bind at all.
No chatter at all
Precision centering, Smooth stepping, and pretty light weight...
No overheating
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Overall Rating
tru cheek
likes
Value
UNRATED
Quality
UNRATED
14 thumbs up!
we are lucky flyers, thanks to united hobbies, these servos are perfect, just like most of uh's parts.
no slop in gears, smooth, quiet,on and on.
i purchased 4 of each and they are so goood my friends bought all that i did not use and love them, now i have order more, but i love it.
i also purchased a servo over 300 ozs of torque for 140.00 and guess what? it appears to be the same mfg. heat sink and all.
thanks uh, keep up the good work
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Overall Rating
Mir Ko
likes
Value
UNRATED
Quality
UNRATED
10 thumbs up!
i bought 2 pcs. when operate are this servos extremly hot. after 15 minutes moving = 55 degreas celsius!!?? but that works.
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