RotorStar™ RS-550MGC Helicopter Cyclic BB/DS/MG Servo 10.68kg / 0.083sec / 81g

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They appear goo

Nov 21, 2017

Installed in my Trex 600N with a Bavarian Demon 3XS flybarless system seem to work fine have not test flown but they seem to function fine after test flying If all good will buy more\
Thanks Hobby King

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Customer Rated

Aug 30, 2016

I bought 4 of them , one did not go at all ,got a replacement. But all 4 of them
have a problem to hold the position . Through t them all out and replace it with a Hitec servo witch works at least .That was the first and last time I bought a servo
here.

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Customer Rated

Jun 22, 2016

Great servo running it in my slash 4x4 strong fast smooth and a little loud but not as loud as savox servos, plastic case isn't the best qualitt but veey mucb worth the money

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Customer Rated

Jun 10, 2016

Well it's been a month of flying these servos in my Compass6 Hvu heli and they are flawless in performance. I highly recommend these servos. I can not tell the difference in performance between these servos and comparable align servos that cost 3 times as much. A no brainer and will purchase more in the future.

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Customer Rated

May 14, 2016

I have 4 or 5 of these that I have been racing/playing with for about 2 years. They've been run in Associated T5M, B44.3 & B5m, Losi 22B, 22T & XXXT, Traxxas Slash, and a Wheely King. I started using it in the Wheely King as a cheaper alternative to Spektrum 6040's, and it worked so well I now use them exclusively. I race on offroad astro and clay. The servos are fast, inexpensive, have good torque and I have not had a single failure. I highly recommend for any 10th scale racing.

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Customer Rated

May 11, 2016

Well I've had about 4 flights on a Compass 6HVU and they are performing very well. I was a little hesitant at first to use these servos at a 19.99 dollar price point but I have turned the 6HVU into a 6s slow headspeed machine and thought let's just give em a try. I can not tell the difference between these servos and the Align ds615's that I usually use, they feel the same in the air. I only have 4 flights on them so well see how they hold up. I will give another review in about a month. One thing for those who do buy these is you should drill out the servo horns where the main screw goes in cause its a tight fit and will cause the screw to not align into the spline correctly which will cause you to strip it. I almost did but caught it in time and drilled them out and it was a lot easier to screw it in align without cross threading it.

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Customer Rated

Oct 29, 2015

Nice item. Ordered 3 for a 550TT. You'll need spacers to give the right clearance in the frame though.. either washers or I used Align Carbon Servo plates, which work well although not cheap. One of them was a bit notchy, so stripped cleaned and regreased the gears... solved and silky smooth. No problems.

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Certified Buyer Rated

Aug 13, 2015

A perfect servos not only for helis, very useful if you need fast and strong ones for a plane model. Runs very smooth, centers perfect, has a lot of torque and speed. The overall quality is very good. This is not a cheap servo, it`s a true bargain!

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Customer Rated

Mar 15, 2015

Great servo, over 100 flights installed in the elevator of my Yak 40E running on 6V BEC. Incredible speed, awesome precision and torque. Has taken a lot of abuse from 3D and high energy maneuvers. It is really worth the price.

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Certified Buyer Rated

Feb 26, 2015

For the price a good servo. Speed is very good at 6 volts. The servo do make a lot of noise (high sound) that's very irritating,