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FlySky TH9X trouble! Any info appreciated.

#1
I purchased a Fly Sky TH9X from Nitro Planes a few weeks ago and I think I might have a bad one or at least a couple of bad recievers? The first thing that caused concern was when one of the Rayovac batteries I installed popped within about 5 minutes of usage. I changed out for my JR Nimh 1500mil and it kept the transmitter on but runs it down within a half hour. That pack is a few years old so I am not sure about it. I now have a 850 mah 3s only charged to storage and that seems to be holding a lot better. But, and a big one at that I am having a serious range/bind? problem. I have only programmed 3 planes for this radio so far. A HK Pitts with gyro on rudder, a Dynam SR trainer, and a HK Radjet. It seems to perform flawless on the Pitts and the SR, although the servos don't seem to move smoothly like my Spectrum and JR, but I have lost the Radjet twice due to control loss. Each time was on a different receiver. I have tried different antenna orientation. making sure the speed controller was set on 8000mhz. etc. The radio doesn't facilitate reduced power when you hold the bind button. After another nerve racking flight this afternoon(no crash this time though) my son and I did our best to check range by me simply walking across the field and him giving constant input for the ailerons. It became a bit glitchy and the servo movement became less smooth at about 400ft and lost signal totally at around 600ft. Is this normal? I haven't tried it with the the other two yet but I did walk out the DX6i about another 300ft and it seemed fine. So I guess the question is, do I have a bad 9X/receivers or is this just as good as it gets. Thanks in advance for any help.

Jay
 

ananas1301

Crazy flyer/crasher :D
#3
Hey,

yeah I think 600ft doesn´t really fit the bill for what you actually payed for! I think you should definitely send it back, because that way you can be sure that you´ll get one that will be working (at least the possibility for it to happen another time is much less)

@Sunshine: I don´t know for sure but I think that is the frequency the ESC is communicating on with the Receiver... that wouldn´t change anything though I think because it doesn´t really have to do anything with the other servos, does it?
 

SunShine

not crazy, just stupid
#4
Hey,

yeah I think 600ft doesn´t really fit the bill for what you actually payed for! I think you should definitely send it back, because that way you can be sure that you´ll get one that will be working (at least the possibility for it to happen another time is much less)

@Sunshine: I don´t know for sure but I think that is the frequency the ESC is communicating on with the Receiver... that wouldn´t change anything though I think because it doesn´t really have to do anything with the other servos, does it?
communicating at 8Ghz? I highly doubt it.

But do you get better range with the other receivers? you might just have gotten a faulty receiver, Chinese QC isn't known for being the best...
 

lobstermash

Propaganda machine
Mentor
#5
Haha, Nitroplanes, eh? The Turnigy 9x (same tx) from Hobbyking is half the price! It sounds like something's not quite wired correctly if it's killing batteries at that rate. I'd send it back as a faulty item. I've got a Turnigy 9x and have flown out to the edge of visual without an issue. It's probably a load of rubbish, but apparently the Flysky version has buggy firmware too (or so HK claim), which some people reported to have make servos twitch and reduce range.
 

jetpackninja

More combat please...
Mentor
#7
Nitroplanes has pretty good customer service.
Contact them and see what the options are.
My opinion it is probably worth attempting a reflash of the firmware.
May or may not be above your technical comfort level, I know of some not so technically astute people that have done the reflash and turned out OK.
 
#8
hi!, have you checked the voltage in the receiver? also, what do you mean by setting the ESC to 8000mhz?
-A
I will check the voltage. Perhaps there is a problem with the esc. I was using an orange receiver prior to this without a problem though. Switched radios because my 9303 is in for service. Thanks for the idea.
Jay
 
#9
Hey,

yeah I think 600ft doesn´t really fit the bill for what you actually payed for! I think you should definitely send it back, because that way you can be sure that you´ll get one that will be working (at least the possibility for it to happen another time is much less)

@Sunshine: I don´t know for sure but I think that is the frequency the ESC is communicating on with the Receiver... that wouldn´t change anything though I think because it doesn´t really have to do anything with the other servos, does it?
The manual for the esc states that rf interference is greater with the 16k setup. Not sure what they mean either.
 
#10
Haha, Nitroplanes, eh? The Turnigy 9x (same tx) from Hobbyking is half the price! It sounds like something's not quite wired correctly if it's killing batteries at that rate. I'd send it back as a faulty item. I've got a Turnigy 9x and have flown out to the edge of visual without an issue. It's probably a load of rubbish, but apparently the Flysky version has buggy firmware too (or so HK claim), which some people reported to have make servos twitch and reduce range.
I wonder about the validity of HK's claim. I intend to update the firmware with the er firmware so I wasn't too concerned about it. I got a good deal when they had their "black Friday Sale". It was $60 at my door.
Jay
 

Non Action Man

Nose Landing Specialist
#11
I have the fly sky version of this radio, and it should be getting a lot more range than that. The QC is not great, so it's a bit of pot luck as to how good it will be. I'd send it back if you can.

I also got a turnigy branded one in the last HK sale, and it is ever so slightly different- the turnigy has the Tx module without an antenna and hard wired to a case antenna. The FS one I got a Tx module with it's own antenna, better in my oppinion.

Good luck getting it sorted,

NAM
 

Non Action Man

Nose Landing Specialist
#12
Just had a thought, are you using the same receiver for all the planes, or different ones? If different, have you tried taking the Rx out of one that works well and putting it the ones that don't?

Also, on the planes that don't do well, could they be producing too much rf noise? did you try them with a different Tx?

NAM
 
#13
Just had a thought, are you using the same receiver for all the planes, or different ones? If different, have you tried taking the Rx out of one that works well and putting it the ones that don't?

Also, on the planes that don't do well, could they be producing too much rf noise? did you try them with a different Tx?

NAM
Different receivers but in the same plane. Two others seem to be fine. I have been range checking today at my home and I could walk a little further than I could with my futaba fm and hitec receiver. I have several magnets holding the motor cover and hatch in place and it puts the receiver in close proximity. I am going to add some extensions and re-locate the receiver to see if this helps. I still am concerned by the rate at which the transmitter consumes batteries, not to mention the popping of one of the alkaline batteries.
 
#15
Did anything ever get resolved with this?

Flying my Hawk Sky with the OEM 1800mah dynam battery my hawk flew very stupid, like I was barely in control. With motor cutting out like I lost signal for a few seconds. When motor would stop I'd chop throttle and wait a few seconds then give throttle and recover from whatever position the plane was in. I was flying reactively rather then the plane doing what I wanted it to do.

When I use anyone of my 2200mah packs it was a totally different plane. Nice crisp controls and no apperant signal loss. So I was blaming it on the batterypack. was wondering if their wasn't something similar going on with your problem.

I reciently had my brother discharge and ballance charge it with his Astro-Flight and "blinkie" module. Fully charged he said it started out at only 1500mah........after cycling the battery 3 times he got it back to 1850mah and all cells ballanced. I went ahead and bought the same model charger because of his reveval of the pack but am reluctant to put it in the Hawk and toss it in the air. I have been using it to bench test setup since.

On my YouTube channel "EugeneKingify" I have some FPV footage of the signal loss in action. Their labled with the 1800ma in the discription.

Just wondering............
 
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