Dx7 Problems

[madmick]

Hi to all

Ive been having problems with the setup of the DX7 to do with the Gyro as Ive started with a new model and have set the Gear channel switch to Gyro and the switch works until I setup Gyro sensing is there something that I'm not doing right ?
and I'm confused about the hole Gear channel thing anyway, because with the DX7 you have to set the Gyro sens to 72% for gain dose that mean the gear channel is for the Travel of the Servo?.
I've watched Jermo's Vid's over and over and Bob's for Gyro and the DX7 and I don't see that Jermo dose anything with the Gear channel and as I cant do anything with the gear switch after Ive set gyro gain where do I go from here.

Thanks Dilbeck for that info I have a 401 as well are you saying that just use the gear as gear and that will set the Travel for the gyro or servo?


HELP ----- Madmick

[Dilbeck]

Not sure what gyro you have but on my dx7 with a GY401 i set the gear channel to gear not gyro, Then go to travel adjust under gear and set down or HH to 70% set up or rate mode to 50%. Forget the setting of gear to gyro thing. A lot has been said on this subject with the dx7 and have tried them all, This one works the best for me,

[madmick]

Than why is Jermo telling everybody in this Vid's to setup the Gear channel for the Gyro????????

[808trex]

I tried the video way to and didn't seem to work. I'll try your way and see what happens..

:DOH

[madmick]

I've tryed doing what Dilbeck has said it works but then in the Tx the Gyro sens is not showing up anywhere through the menu?

[madmick]

Its getting to the point Where I'm going to throw Dx7 out as eversince I've have it the gear channel has never work the way its suppose to now that someone has told me a way that dose the gyro sens is nowhere to be found on the bloody thing

[808trex]

Dilbeck (http://www.helifreak.com/member.php?u=40332) , Does that matter about the settings?

[ChasHeliCop]

If I am not mistaken, when you set the gear channel to ger it does away with the gyro sens menu because it's not required and your Tx doesn't know there is a gyro attached. I have my AUX2 channel set to gyro and plugged the gyro into Aux2 on the Rx. My setting in the Gyro Sens menu came out to 84%......... and I don't mess with travel adjustments. I also used 84% on both pos 1 and pos 2 so it's always in HH mode.

[Dilbeck]

Chaseheli is correct, The gyro sens is set when you set the % above 0 = hh % below 0=rate mode The dx7 in the travel adjust menu goes from 0 to 150 so at +75 you are setting the gyro to hh at 50% sens because half of the total 150 is 75. This is the hard part to understand, If the menu in travel adjust was 0 to 100 then it would be 1:1 ratio +32 would be 32% gyro sens in hh mode.

[Dilbeck]

One more not i forgot to mention, If you had set up using the gear to gyro and then changed it from gyro back to gear you must (re-bind) the receiver with the transmitter for it to tke effect!!!

[EricW]

Hi,
I'm new with the DX7, so just to make sure i get it.....
I've set my Gyro on the gear channel and entered 75% to start with (old futaba setting).
So what your saying is i have a travel range of 150 and theoretically I'm at center now with the entered 75% value (the 401 shows it's in HH mode btw).
So i have to add 38% and use 113% (150/100=1,5 to get 1% of 150... X 75 = 113%) to get at the same sensitivity value...
Correct?

Thanks
Eric

[madmick]

If I am not mistaken, when you set the gear channel to ger it does away with the gyro sens menu because it's not required and your Tx doesn't know there is a gyro attached. I have my AUX2 channel set to gyro and plugged the gyro into Aux2 on the Rx. My setting in the Gyro Sens menu came out to 84%......... and I don't mess with travel adjustments. I also used 84% on both pos 1 and pos 2 so it's always in HH mode.
Hi ChasHeliCop

So as I understand it if I use Gyro sensing that's it I don't have to worry about the travel adjust for the Gain wire, the sensing will set the gyro for me?
THEN WHY THE GAIN WIRE?
dose that mean that I can unplug the gain wire if I use Gyro sens on the Tx
and my dx7 wont let me do anything with Travel adjust even if I had to adjust it for gain for the gear channel, while using Gyro sens.
But only If I use the gear channel for gain then I dont have to worry about Gyro sensing because I cant use both in the Tx at the same time?

SO either one or the other?

[fogger]

If you set gear to gear and ignore the whole gyro sense babble, which imo just confuses things, you can set it up just like you would normally with say a dx6, IE the gain lead of the gyro goes into the gear channel on the RX, you adjust gain by adjusting the travel adjust of the gear channel, and you toggle hh / rate mode with the gear switch. Personally I use the AUX2 channel, but the setup is the same... Simple, and it works just fine. Honestly, who has it set up for different gains in different flight modes anyway?

-Fog

[madmick]

If you set gear to gear and ignore the whole gyro sense babble, which imo just confuses things, you can set it up just like you would normally with say a dx6, IE the gain lead of the gyro goes into the gear channel on the RX, you adjust gain by adjusting the travel adjust of the gear channel, and you toggle hh / rate mode with the gear switch. Personally I use the AUX2 channel, but the setup is the same... Simple, and it works just fine. Honestly, who has it set up for different gains in different flight modes anyway?

-Fog
Hi
and yes it seem easer but what's the % 72% and %50 for normal

[ChasHeliCop]

Hi ChasHeliCop

So as I understand it if I use Gyro sensing that's it I don't have to worry about the travel adjust for the Gain wire, the sensing will set the gyro for me?

That's correct, it's either one or the other.

THEN WHY THE GAIN WIRE?

The remote gain wire is so your gyro can get the settings from the Tx, unlike some servos which require you to set the gain manully on the gyro itself.

dose that mean that I can unplug the gain wire if I use Gyro sens on the Tx and my dx7 wont let me do anything with Travel adjust even if I had to adjust it for gain for the gear channel, while using Gyro sens.
But only If I use the gear channel for gain then I dont have to worry about Gyro sensing because I cant use both in the Tx at the same time?

No, you need the remote gain wire plugged in, I don't think you can unplug it, unless you have a manual gain setting on the gyro.

SO either one or the other?

Yep, it's one or the other, but not both.

[ChasHeliCop]

Anything under 50% is Normal Mode and 72% and above are head holding mode.

[fogger]

(IF you are not using the gyro sense menu) then the travel adjust setting in the transmitter (for the gear channel) determines the gain setting of the gyro. For the JR radios positive numbers are Heading hold, negative numbers are Normal (rate) mode. The higher the number, the higher the gain.

[Dilbeck]

Fogger is correct but you have to remember that there are other settings IE:[Auto D/R EXPO] in the menu, you can change NORM from INH which means disconnected, P-0 which means gear swirch down or in HH mode P-1 which is switch up or in rate mode. Most people fly in P-O which is HH mode, switch down. If you forget to set this in this menu IE: NORM INH ST-1 INH ST2 INH then nothing will work. Hear is my list from start to bottom to clear things up I hope. Hold down the select and down button at the same time and switch on the dx7. Boom ! model select comes up then hit up 6 times to get to (input select) set AUX2 toAUX2 and GEAR to GEAR. Switch off the dx7. Switch back on, push down and select at the same time, now your in the main menu, Go to [SUB TRIM] and set to 0. then go to{TRAVEL ADJUST] and set Gear to +75 and -55 (you have to flip the gear switch to get from + to -, next go to [DR & EXP] under RUDD set EXP to LIN and D/R to 100% by pushing select you toggle between RUDD, EXP, D/R, by pushing increase/decrease you toggle between RUDD,AILE.ELEV. under AILE mine is set to EXP +30% D/R 100% under ELEV, EXP +30% D/R 100% This will give you a sweet hover in normal mode. Next is scroll up to [AUTO D/R EXP] NORM at P-0 , ST-1 P-0, ST-2 P-0, HOLD INH. This is just a start for a good steady hover but the gyro settings remaine the same for all flight modes. The only thing to tweek is the non liner curves for pitch and the biggest throttle. [THRO CURVE NORM] EXP ON, L=0 1=30% 2=40% 3=50.5% H=60%...... [PITCH CURVE NORM] EXP ON. L=34.5% 1=64.5% 2=88.5% 3=93% H=97.5%... Pitch curve values are set from the build of the heli from -10 to +10 and tuned down for hovering with the transmitter. Clint Dilbeck...

[madmick]

Hi to all and I want to thank all who posted reply's to my thread I've got it down and know whats going on.
Thanks again Madmick

[majuro15]

I'm having problems with this too. Dilbeck, I think your settings will work, as they make sense to me. I'll try it tonight. The main problem I'm running into is that when I have AUX 2 set to GYRO, no matter what the travel limits are set to, the gyro overpowers the rudder servo. The rudder also does not self center. IE if I swing it one way, it will correct the opposite direction and just keep binding until I manually apply oppisite rudder.

[CaptFrank2001]

I am about to smash my GY-401 with a hammer. Three times I have had my AR7000 receiver (DX-7) out to check everything. I believe everything is correct. NO WHERE did I see anything about re-binding the receiver. I will try this tomorrow. I am too frustrated to do it today. Hope this works. The hammer is on hot standby.

[Pinecone]

Maybe because why would Spektrum (JR and Horizon) tell you ANYTHING about making their products work with Futaba? Or vice versa? :)