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REALLY GREAT SERVO!
I think it is the best servo in this price and weight range! They are really fast and without problems to use!
Recommended!!
Super Servo! Sehr schnell und eine super Rückstellgenauigkeit! Benutze für Servos in dieser Größe nur noch die HXT900 und bis jetzt ohne Ausfall oder irgendwelche Probleme!
Sehr zu empfehlen!!
185 people like this review.
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| Woot! These are da Bombs@!! don't waste your money on other servos.. these little things perform as good as HS-55's except that when the gears strip, you simply replace them with a new one because of their low cost! They strip only on really hard crashes just like the hs-55's.. get more of these! i'm ordering another 10 just to keep them! good servo's for any foamie... i use 6 of these on my bipe..
135 people like this review.
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These gems are fast and strong, a bit noisy perhaps.
There is a downside of beeing strong and fast, they draw quite a bit of current.
I measured about 550mA when exercising one HXT900 without load. This is an average, it seems to require more peak current. If used together with a linear BEC it will cause voltage drops.
I tried 2 HXT900 with a 1.5A BEC and a Spektrum AR6200 Rx. I could not exercise those two without loosing power to the Rx and cause it to a "BrownOut Reboot".
With four servos connected, I could not even touch the control stick. The BEC circuit also got so hot it melted its plastic sleeve. Still works though, did not fail completely.
I tried with a larger ESC, having a 2A linear BEC, and it worked much better. But I could still force a "brownout reboot" by wildly excerise all four servos. I dare not fly my Pitts this way.
So, with four servos or more and an AR6200 Rx, I think you must use a larger switch mode BEC capable of 3A at least.
This is a combined problem of high current surge, poor power supply and voltage sensitive Rx. And maybe poor filtering of the powerline.
Not really a problem with the servos as such.
/A
126 people like this review.
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Alot of flyers in the area are just loveing these. Similar, and in some aspects superior performance to the famous HS-81 at one quarter the price.
Here's some stats from the forums here at Hobby City:
Results in degrees/sec.:
@4.8V 450
@6.0V 560
Results in sec/60degrees.:
@4.8V 0.13
@6.0V
0.11
Torque Centering
1.3 .2
79 people like this review.
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These are really nice servo, and you get seven of them included shipping, for the price of one in Portugal.
These servant are fast and very accurate, and the price is fantastic.
Five stars.
64 people like this review.
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These HC babies kick Hitec HS-65HB's into the weeds starting with a massive 6:1 price ratio saving and ~identical physical size26.8hx23.2Lx12w mm at 9g. They use their own horn spine type however and good quality copper servo wire, and make a similar noise. My tests show very slightly higher power drain than a HiTec HS-65HB
@4.8v smooth flying/hard reversals/stalls @/speed
HXT900 160ma/290ma/690ma/0.14-60° (side-by-side with Hitec)
HS-65HB 135ma/260ma/545ma/0.14-60°
I have bought more than 30 of these and never did one give a problem with normal park flying/crashes and they work fine at 6v but be aware the current will rise to 190ma/370ma/690ma for your BEC. This servo allows you to own and operate 6 models where Hitec would limit you to one model. You decide. My recommendation is get more for less - they are basically the same spec. Sure we all have a few models that we like to run expensive servos on, but these HXT900 are the base to build a big pyramid on, and spend the money you save on buying more airplanes and helicopters. I don't consider them anything like a HS55 which = HXT500. 5 star performance for a 10 star price.
63 people like this review.
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This servo is comparable to HS-55. Faster, stronger than HS-55. Very good servo at great price!!!
Speed HXT 0.12s Hitec HS55 0.17s
Torque HXT 1.6 kg-cm Hitec HS55 1.1 Kg-cm
49 people like this review.
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| I purchased these servos to install in my new Precision Aerobatics Addiction 3D plane after using this manufactures servos in my PA Katana Mini using the HXT500 servos. I found the HXT900 to center more precisely then others I have tried/tested, are quicker in response, weigh less and are just to inexpensive not to use. This manufactures servos are in 3 of my planes as well as in 4 other of my friends and have not had any failures (over 4 months) as of yet. I HIGHLY Recommend these servos.
41 people like this review.
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Similar to the TowerPro SG90 (Same one).
Great little servo, hight torque.
Great for foamies and small planes.
I bought 12 of these.
Really really great price.
Buy it, you wont regret.
32 people like this review.
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Great deal! They seem to be very precise. Weight is about 10.4g but that doesn't mind. They are a real alternative to HS55 although height differs about +3mm.
Think, i'll buy more of them.
28 people like this review.
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| Fast and precise servo, its not sturdy as hitec 65, but the price makes it better. If it breaks just replace it. Centers well and is quick response.
28 people like this review.
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This servo is great for the park flyer in your hanger. It is everything they say and more.
Size : 21x12x22 mm / 0.74x0.42x0.78 in
Voltage : 3v ~ 6v
Weight: 9.5g not 9.0 as they claim
Speed : 0.13 not .12 as they state sec/60(4.8V)
Torque : 1.5 kg-cm not 1.6 as they state
Worth the price
Teflon Bushing, 15cm wire, coreless motor
22 people like this review.
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| Man, for the price, these are really hard to beat since they seem to perform like the HS-55's. I'm using these in my mini-wings...the 16-20 inchers
19 people like this review.
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bullet proof your hxt900 use the brass gear from a mks s1618 gear set
only the brass gear fits its the only one you need any way for a couple of dollars it beefs up your servo takes only a few minutes remove the horn undo the 4 screws at the bottom wiggle the top off with long nose plies pull the pin out pull out gear drop in brass one lube it and your done .
19 people like this review.
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Perfect servo.
See video "How to change".
http://www.youtube.com/watch?v=KhfKf1LT_cw
or at HobbyKing videos.
www.nitroylitio.com\foro
17 people like this review.
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I've installed these servos on my Axe CP to replace to stock ones.
These servos are definitely better. Quicker and quieter.
The only drawback is that they are reversed compared to the original servos. This is not a problem if you have a computerized radio system as you can reverse any channel you wish and on board eccpm will support it. It IS a problem if you're using the stock TX like me, reversing channels will not reverse eccpm! This essentially means you can't reverse servo channels.
I fixed the problem by connecting the left servo to the right channel, the right servo to the left channel and flipping the forward servo so that it's directions will be reversed too.
After that, the heli's response is much faster and more accurate. It seems to draw less energy as well I get slightly higher flight times (maybe just need less intervention to keep a stable hover).
One drawback is that I can't seem to find replacement screws for the servo arm - do not lose yours!
16 people like this review.
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| These servos have always worked for me. I glue them in all my depron models since they are so cheap. I bought a dozen of them and none of them has failed after a year of use. Since they work on an unusual low voltage (compared to other servos) they are a great combination if you use them with 1 lipo cell (3.7Volt) as they still have enough speed.
15 people like this review.
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| Don't waste your money on any other servos. These are the best in their class. Tight, precise, fast & strong. I have a bunch of them in my electric fliers and have had no problems. I've got over a dozen and I'm buying more.
14 people like this review.
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| I purchased these servos to fit in replacement into my heli HoneyBee King 2. The size is a little bit taller than the originals ones. You have to cut 0.5 mm on the fixation arm, and only on one side, the farthest to the rotation axis. You can use the delivered screws, the length is good, but the head is too large. Just shape it ! They work very well, the neutral point is quite good, and they've got the same (excellent)speed, wich is very important when you fitted them on a CCPM heli. For me, satifaction guarantee at the best price !
13 people like this review.
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| This is a cheap and good servo. It is a good choice because the customer also can buy the replacement gear set, then, if the gears broken you don't need buy a new servo, only change the gear damaged.
13 people like this review.
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