Corona CS238HV Analog Metal Gear Servo 4.6kg / 0.13sec / 22g

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Customer Rated

May 19, 2016

These servos work just fine with my orange receiver and a 5 volt BEC.
The complaint I have is with the servo arms. They do not fit the metal out put shaft (spline) on the servo; the servo arm holes are too small. I had a few old arms from a full sized FMA servo and they seem to fit ok.

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Certified Buyer Rated

May 18, 2016

God og billig servo, momsen skal ned I DK foer vi gaar konkurs

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Customer Rated

Sep 20, 2014

These servos are great for 50-60" plane currently my servos hooked in rudder and elevator. They r high performance servos according to their cost. In short they r worth the price.

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Customer Rated

Aug 23, 2013

Sad to say I have come to the conclusion that these servos are not HV in a useable sense.
They might be HV in that they do not burn out after being connected to a 2s LIPO for 45 minutes but they develop a dose of frantic jitters at end of travel. Who wants their ailerons or elevator beating the air at full travel? This gradually decreases in intensity as the voltage is lowered. Even at 6v they are jittery to the point I would not use them.
Everything goes smooth, quiet, and stable at 5V and I would never use them at any higher voltage.
All 4 servos I purchased behave like any other standard, cheap, strong servo at 5v.
Forget the HV specification.

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Customer Rated

Aug 21, 2013

Just received 4 of these little beasts. Hooked them up to one of my Orange Futaba FAAST compatible RX's and tried them at various voltage rates. I set the RX to analog mode - 3 slow flashes. Servos are wildly jittery on 2s 7.2v Lipo, extremely jittery on 6.4v LIFE, mildly jittery with BEC set to 6v and quite good with BEC jumper set for 5V.

So useable High Voltage they are NOT. I suspect the Orange RX can be a bit noisy so will try later with FrSky RX when one is available as I have had better smoother results with them.