Turnigy 1800A Servo 8g/1.7kg/.10sec

 Ntc_heli 85 points

I weighed it and with the biggest servo arm as shown in picture screwed onto servo the scale jumps between 9 and 10g. so my guess is it weighs 9.5grams

 roberted5 104 points

4.8-6volt.6 volt max.

 Jason_® 34 points

Yes, it's perfect Please credit

 Thomas 6 points

Yes it have 1,7kg of power! Thats well.

 jose 76 points

Yes, gliders often fly slowly and servos do not require much torque and power, just as the servos are trustworthy. tk

 DennisT1 162 points

I get 11.7mm by 23.0mm by digital vernier. I have 2 that I can get at(both within a couple hundredths of a mm of each other)* but I don't know how much variation there might be between batches.

 OldFartFlyer 1319 points

There is a clear variation on casing outside dimensions after each is finished. I tailor my cut outs for every servo. To allow for this variance, use the outsize dimensions given. for precise fitting - measure!

 OldFartFlyer 1319 points

I have never tried to measure. In my opinion, it travels to approx 60 degrees either side of neutral and total travel appears to be a fraction greater than the HXT900 on the same arm length. (this does not mean that it is therefore better - just different) Servo arms are a little soft.

 JurekD 34 points

It rotates some 105 degrees for me - surely more than 90. Analogue servo so naturally a little soft - buy digital if you need hard response. Actual measured travel speed 0.24 sec/full stroke, so close to 0.13sec/60degrees at no load. So the 0.10sec spec is definetely overrated. (unless you want 45deg. rotation). Please thumb up if this helped.

 JurekD 34 points

to clarify above, it is 105 degrees between max left and max right. It seems to me that it is a noticeably short of 60 degrees from neutral either side.

 JurekD 34 points

Also, it seems to me strong enough for it's size and very little jitter under load, so you can probably excuse that it's a bit soft.

 OldFartFlyer 1319 points

We should also note that when we place these servos on a servo tester, the maximum deflection is comparatively "enormous" - hard over even greater than my estimate given above. When we drive them within our respective Tx - Rx systems our diverse configurations and model settings come into play. For example, one might have a channel set at 80% travel and another might be set at 150% - depends on your gear (and your inclination). This will vary the arc of the arm.
However, the main point is that most operators would report that it does deflect suffiently.

 Qba007PL 119 points

Yes. This servo is the same as e-sky servo used in Belt. You can replacement e-sky servo with this.

 OldFartFlyer 1319 points

Might look very similar but not sure if identical.

 DennisT1 162 points

Yes, and very good replacements

 Bikalho 149 points

Sim, sao perfeitos para shocks.

 OldFartFlyer 1319 points

I think they would do. But you might want to consider lighter components.

 kenniff 10 points

i would say so its faster and smoother :)

 kanara27 16 points

I think, this servo is more precise.

 bgjbrok 59 points

I say yes because: this servo works without any problem whith the Orange FASST receiver. (HTX 900 jitters at the Orange FASST receiver)

 OldFartFlyer 1319 points

No, not better, just different.
I use both in my parkflyers for different applications or situations. They each have their respective strong features that make them good for one thing and less good for others.
This servo is lighter, quicker, quieter and more powerful along an arc seemingly slightly longer than that for the HXT. On the other hand it is not as robust, its thin moulding snaps more easily and is less moisture resistant. Its servo arms are not at strong nor as long and its lead is shorter. Overall, it has a delicate feel. And it costs a little more.
Fitted wisely and applied correctly, this is a good servo.

 jimsach 31 points

Difficult to answer your question without knowing what ESC you're using. Many newer ESC's have very robust, switch mode BEC's which can handle fairly large current draws. This servo is an analog servo, which typically draws less current than a digital servo. However, its specs show performance at 6 volt, and many ESC - BEC's are not able to be programmed for 6 volts, so you may want to run a ubec that can be set to deliver 6 volts so you can realize the servo's full performance. Generally, a 2 amp BEC can easily handle 4 analog micro servos. Hope this helps.

 kunal 3 points

i am using this esc with 2a bec. so will it work without a ubec ? www.link

 kunal 3 points

www.link this is the one i am using

 jimsach 31 points

I'm sorry, but the HK Discussion system alters the web site address so I'm not able to follow the link you sent. If you are using 4 or fewer of this servo, a 2 amp bec will work just fine. If you have a way to test, try running the copter at full throttle and move your transmitter sticks rapidly. If the bec is not up to the task, you will be able to see that the servos hesitate or refuse to respond to your commands. If that happens, add the ubec.

 jimsach 31 points

Sorry, I also meant to add that you should make the test as brief as possible to avoid unnecessary strain on the rotors. It would be even better if you could simulate a load on the motor(s) without having the rotors involved, but I don't know enough about copters to advise on that.

 kunal 3 points

i am using a hk ss series 18-20A esc [SKU: HK-SS20A]

 jimsach 31 points

Sorry for the delay in responding ** busy with Christmas activities. As long as you stick with 4 or less of this servo, you should be fine. That ESC has a 2 amp, linear bec, which is very common on low amperage ESC's designed for 2S to 3S lipo packs. Does a tricopter have one motor or three? If it has three motors, you'll need 3 ESC's, and you may want to go back to the ubec idea.

 Luca 5 points

basta invertire la polarità* e il servo andrà* al contrario...

 granny 5 points

can't you reverse the channel from the tx?

 tctdrummer 5 points

unfortunately no, because they are for a retract landing gear system and all 3 servos are on one channel on my rx/tx....i need to have the front landing gear servo reverse so the all flap up and down simultaneously

 bgjbrok 59 points

The Turnigy 3 Channel Servo Speed/Direction Regulator might be a solution to reverse 1 of 3 servo's (you can omit the speed www.link

 Maksim 129 points

Not fit

 aeroandy 16 points

no this servo have a diferent arm. this servo is better than hxt900. i have the both.

 nitc_india 425 points

yes it will .

 Camboui 133 points

I got 3 servos, so answering myself: size and weight like HXT500, torque like HXT900, shorter wires and better aspect/finish.

 bighead93 70 points

I have not had to replace the gears on these servos yet.

 rsr911 17 points

I am also searching for replacement gears. The final gear of this servo is fragile. There is not enough material under the root of the gear teeth, so teeth break off easily.

 Wireman 343 points

The servo wire is 13 centimeters, or just a little more than 5 inches.

 bighead93 70 points

I think they are about 6".

 Ustas 282 points

Ýòà îòëè÷íàÿ ñåðâà ïàøåò áûñòðî ïðè òåìïåðàòóðå -20 ïî Öåëüñèþ. Ïðîâåðåíî â Ñèáèðè. Òî÷íûé öåíòð è ïëàâíîå äâèæåíèå.
Òíøû good servo works great at -20 degree Celsium. Center ok and smooth moving

 bighead93 70 points

I love these! Nice and small...center nice as well! Great for parksize planes!

 GaryM 374 points

All my HXT900s are on helis. These are on a foamy, where they work fine. They seem to be quieter than the hxt900 but that is subjective. I recently got 4 more and will try them on the next project. The control arms do appear to be flimsy compared to the hxt900.