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HomeAircraftHelicopterMain Discussion › transmitter pitch settings, weird question
09-03-2013 05:49 PM  4 years agoPost 1
DinSum

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London, Ontario

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Hi,

I got a question which is kind of hard to ask

Ok i got a turnigy 9x paired with my t-rex 500, I noticed when i raise and lower the throttle stick the pitch doesn't react to every little movement. So for example i will move the stick halfway up and the pitch reacts normally, but lets say i move the stick down 1-2mm it wont change the pitch.... not untill i get 3mm down then the pitch will start coming down, if i move the stick back up i have to move it a full 3mm before the pitch of the blades starts to move back up.... but the motor reacts to every little movement

is this normal?

Hope this makes sense lol

EDIT: Actually the motor does not respond to little movements, it acts the same as the pitch

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09-03-2013 05:51 PM  4 years agoPost 2
chris6414

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Sneads Ferry, NC USA

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Check the pitch curve and ensure there is no EXPO on the Pitch channel

Century Hawk Sport, OS .32, Futaba 7C, GY-601 9251
Predator Gasser SE G-23, Fut 3010 servos, JR gyro/servo

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09-03-2013 06:07 PM  4 years agoPost 3
Peter Wales

rrElite Veteran

Orlando Fl

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Sticky ball links! Probably too tight. Disconnect a servo from the swashplate and see if it responds to stick movements more precisely. If it does, you need to free of f the ball links and there will be a bunch of different ways of doing that following your statement that they were tight.

Peter Wales
http://scalehelicopters.org

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09-03-2013 06:10 PM  4 years agoPost 4
qraptor

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Illinois

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+1
And if not that, possibly bad servos?

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09-03-2013 06:51 PM  4 years agoPost 5
dela

rrApprentice

Stillwater Oklahoma

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Does the turnigy have a "monitor" setting that shows the "expected" servo motion? I find the monitor to be incredibly useful for checking my program changes (especially mixing changes) before I power up the heli.

Ron D.

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09-03-2013 08:23 PM  4 years agoPost 6
DinSum

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London, Ontario

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There is no expo and there is no binding or anything like that.

Now that I think of it I think I only tested it in normal mode, when I get home I will see if it does the same in idle up. If it doesn't maybe its just a setting meant for normal mode...

if it does the same in idle up I will post a video because its hard to explain

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09-03-2013 11:13 PM  4 years agoPost 7
steve 01

rrProfessor

Grand Rapids MI

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What servos are you running and what fbl unit ?

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09-03-2013 11:22 PM  4 years agoPost 8
DinSum

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London, Ontario

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Ok it looks like its doing it in idle up as well.

Here is a link to see it on youtube

Watch at YouTube

Its still hard to tell in the video but you can see when i move the stick very little up and down the servos do not move at all, this makes it really hard to keep a steady height when hovering..

Do all transmitters do this or is it just the ****ty turnigy 9x?

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09-04-2013 12:31 AM  4 years agoPost 9
qraptor

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Illinois

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You're right, the video is a bit hard to see . But it seems like the servos are the problem.

Here is a test you can do. Connect a servo directly to a receiver output for any channel that is set up as a linear 0-100 channel. You will then be able to see if it it the servos that have poor response, a wide deadband or something.

Or it could be the particular transnmitter stick potentiometer going bad. Try it on a channel controlled by a different stick, or a knob/slider.

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09-04-2013 02:36 AM  4 years agoPost 10
junkpilot

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Alamogordo N.M.

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slow response
Are your batteries fully charged? Is there a dead cell? Test batteries in transmitter and receiver.
Junkpilot

When you fly JUNK it's hard to tell when you've crashed!

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09-04-2013 03:41 AM  4 years agoPost 11
DinSum

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London, Ontario

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servos are not the problem all three do the same thing, there is no delay either everything is working good,no expo or end point adjustments have been made, everything is set up properly ive built many heli's before the problem is in the tx, it must be going bad. There is a display screen on the tx which shows stick positions and all axis on all sticks work flawlessly except for throttle stick vertical movement which has 2mm of play when moving it up and down where nothing happens... which makes precision vertical flying really hard

this tx is just messed up, it has other problems like when i set the gain for HH mode I need to change it through the Rate mode gain, its all backwards and I tried reversing the channel and everything there is no way around it, i always wondered why no matter what gain i set on HH mode nothing would change lol ... Turnigy 9x for the loss you get what you pay for, i've heard many good things about it but I suggest you stay away from it and get something like a DX or JR, thats what im gonna do

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09-04-2013 03:58 AM  4 years agoPost 12
Zaneman007

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Texas - USA

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It's the quality of the electronics.
JR, Futaba and other manufactures pride thems selves on the quality, responsiveness and accuracy of their products.

First heli I purchased was a century hawk pro. The swash plate stabilizer was an upgrade, imagine that.

Bottom line you got what you paid for. It works but... Like the hawk pro, not well.

Old Guys Rule!

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09-04-2013 05:32 PM  4 years agoPost 13
qraptor

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Illinois

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There is a display screen on the tx which shows stick positions and all axis on all sticks work flawlessly except for throttle stick vertical movement which has 2mm of play when moving it up and down where nothing happens...
Thanks for the update. Time for a new Tx

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09-04-2013 05:36 PM  4 years agoPost 14
DinSum

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London, Ontario

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Does the same thing happen to you qraptor?

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09-05-2013 06:22 PM  4 years agoPost 15
qraptor

rrApprentice

Illinois

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No, I was just taking a guess from the video. I have only had JR transmitters and never had a pot go bad on me.
Just to be on the safe side, try it with a different Tx if you or a friend has one. Wouldn't want to waste money. Unless you want to buy a new one, then in that case, of course the Tx is bad.

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09-11-2013 06:44 AM  4 years agoPost 16
DinSum

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London, Ontario

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ok its confirmed, turnigy 9x is crap, pure CRAP! I just got my jr x9303 and I can't believe just how amazing this radio is in comparison, light years ahead. no more play in throttle stick im a good pilot again!!

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09-11-2013 05:17 PM  4 years agoPost 17
Heli_Splatter

rrElite Veteran

USA

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not necessarily crap... maybe just some bad pots on the gymbals. It happens. I have heard good things about that inexpensive radio and have flown it once and had good results.

Skids down.

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09-11-2013 05:30 PM  4 years agoPost 18
DinSum

rrNovice

London, Ontario

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trust me, when compaired to the JR radio i just got its garbage, I wasted $100 on pure crap. Im a way better pilot with this jr x9303 and buying it second hand only cost $200, every single last thing about the jr radio is a million times better then the turnigy

I hear really good things about the turnigy 9x over the internet but im sure its all from people that are on the cheaper side and never used a good JR/Spektrum/Futaba radio thats the bottom line, you get what you pay for. My 9x has 3 different problems and all are completely un-acceptable, im sure all 9x's are plagued with problems, not worth taking the chance to try and save a few bucks.

I hope that somebody interested in buying the 9x see's this post and realizes to get something better and doesn't make the same mistake I made.

Ok im done ranting lol

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09-11-2013 06:47 PM  4 years agoPost 19
McKrackin

rrProfessor

Lucasville,Ohio

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Glad you got yourself a good radio finally.

I have had a DX7,a 9303 and currently use a Futaba 8FG.
All three were light years ahead of all the cheaper radios I had.

My early times were tougher than they needed to be with the cheap radios.

I remember the first time I tried the DX7 and I was like you...instantly better.

Congrats and enjoy.

I literally never use the word literally right.

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10-16-2013 05:09 AM  4 years agoPost 20
wc_wickedclown (RIP)

rrProfessor

long beach calif

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i have had 6 turnigy 9x radios or should i say some pilots that i mentored i programmed them all

its a good beginner radio to use with a cheap clone to learn how to
fly with but after 1 year they start having problems with the throttle stick

a person would be better off now a days with a used futaba 6ch
or used dx they last a life time longer.

Insha Allah made in america

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