![]() Then I run to the web to find some review for this servo, and found yours. After plug it in my receiver, I noticed that the servo was overshooting. I would strongly recommend however, that people take a moment to drop a dab of hot-glue or acid-free silicon glue on the motor leads - just to pre-empt the inevitable." ![]() However, if you just want a bullet-proof servo that has a snot-load of torque and costs little more than a standard servo then these are worth a look. If you fly iMAC or turbine-powered models (where precision and reliability is of paramount importance) then I strongly suggest you stick to the more expensive options. The plane also felt less "solid" in rudder response during knife-edge and in a hover - but the Hitec certainly wasn't over four times better (as the price might suggest it should be). I threw one on the rudder of my Katana 3D plane (replacing an HS5925) and I did immediately notice the slower speed. ![]() The ultimate test however, is how do they fly? The quality servos have a markedly better resolution, are rock-steady when repositioning and don't even budge when subjected to load - all areas where the MG995 suffers. Its' when put alongside a "quality" coreless digital that the MG995 shows that it really is a low-cost servo. However, if you're planning to compare this servo to something like the Hitec HS5945 (digital, coreless, metal-gears which sells for around $90) then you'll be disappointed. You get what would appear to be a bullet-proof metal gearset, a supposedly coreless motor, a digital amp and plenty of torque at a faster than average speed. If you're looking at it as a sub $20 budget servo then it's not bad at all. The wires to the motor are unsupported and will almost certainly break through fatigue over time if the servo is exposed to moderate or high levels of vibration. The feedback pot and motor are connected to the PCB by wires and dabs of glue support these wires only where they mount on the pot. The PCB on all the units I inspected was incorrectly inserted into the case so that it was sitting on an angle rather than square to the bottom (not a biggie but perhaps indicative of a lower QC standards?). physically, the assembly leaves a little to be desired. these servos adhere to Futaba standards (spline and direction) but come with a JR/Hitec connector.ĩ. without a servo -arm, the weight is 2oz exactly, not the 1.78oz advertised.Ĩ. resolution is "okay" but not as good as most other brands of digital servos and there are even some good non-digitals that are better.ħ. This is to say that if you command the servo to move clockwise to a position, it will actually move past that position (by 3 degrees or so) then move back to the correct position.Įven more strangely, if the servo is at rest and you try to move the arm, it actually moves *towards* the pressure being applied.Ħ. In essence, this mismatch manifests itself as significant overshoot when the servo is repositioning. the servo-amp is not well matched to the motor/geartrain/feedback pot. they do appear to operate with a higher motor drive frequency than a regular non-digital servo so may well be digital.ĥ. they are all metal geared - even the gear driven from the motor shaft appears to be metal, unlike most other MG servos which use a nylon gear at this point in the train.Ĥ. they are quite fast, perhaps as fast as claimed - again, I've yet to actually measure them.ģ. they are very torquey - I haven't measured the torque yet but it may well be the amount claimed.Ģ. "I've been checking these servos out and can report the following:ġ. FYI, on 11-22-2005 XJet posted the following on the RCUniverse RC Radio Forum:
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