I am currently using HK in all my flat foamys and none have failed. The foam right behind the engine failed (Lowes blue flat foam) twisted right off from the torque of the engine, stress failure I guess.

But I'm having the same feelings as others about trusting inexpensive servos in a plane that I spent alot of time building. I can say this from my electronics background - if the electronics work out of the box the only reason for failure would be bad solder joints on the servos circuit board or an overvoltage.

You are paying a higher price for the quality control of JR, Hitec, Futaba, etc.. If you're handy withpintipped solder iron you could take apart the HKservo's and do the QC yourself.HK, Hobby Partz, hardly have a warrenty at all, which translates into poor quality control IMO..

As an example my LHS was blowing out 11 generic micro servo's that orginally went for $15 ea. Not HK but Made inChina.I purchased all 11 for $2ea. One of the 11 didn't work out of the box. Took it apart and the positive wire lead was disconnected right at the circuit board a typical cold solder joint. There was solder on the wire and the pad where it was suspose to be attached. So I figured the person whose job it was didn't hold the wire good enough.

I got out my soldering iron and resoldered it. Works fine now. Did I go back and check the other 10 by opening them up and looking at the solder joints? Nope. Who has the time. The other 10 worked out of the box. Besides they're in flat foamys anyway. On the other hand,I've got Futaba servo's in my Kaos.

I'm moreworriedaboutthe switches that come with myradios. A friend had a Killer Chaos that he flew regularly. One day I showed up just in time to catch it glitch twice while in a turn. Went striaght in. We picked up the pieces put the elctronics back together and it turned out that the positive wire from the battery to the switch, right where the wire went intothe switch,broke inside the wire from flexing. Found it by pluging everything back in and moving the wires around. Too bad really liked watching him fly it.

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