DX7 Gyro menu

[EBCooper]

First off, I'm not having any problems. I just want to learn what this menu actually does and if its tied into the delay on the 401 gyro.

Under the Rate: What do the 0 and 1 represent? I adjust the % and it seems to do nothing. Am I right in thinking that the 0 is the sensitivity with the throttle hold of and the 1 is the sensitivity with the throttle hold on? Why does nothing seem to happen when I adjust the % values?

The other ? On the 401 what does delay do.

Last ?, why would you ever fly in normal mode, not HH mode?

None of these settings seem to do anything different. I have never had any tail wag or issues with the gyro not performing. Maybe I'm not seeing the difference even though its there.

[Sam77]

From what I gather, the 0 is one switch position and 1 is the other.

So, using the Gear switch as the gyro switch, 0 is up and 1 is down. Setting values for either of theses fields will be enabled when the selected switch is in the respective position.

Assuming you use Auto Gyro sensing:

For example,
0 = 72% would be the switch in position 0, and would put you in HH mode.
1 = 28% would be the switch in position 1, and would put you in normal mode.

I'm just learning the DX7, but what I've learned has been greatly supplemented by using Jermo's DX7 Setup Video. He does a good job of explaining GY401 setup.

You can find the video:

HeliFreak.com Index -> Finless Bob's Helifreak Tech Room -> Jermo's DX7 Setup Video

Hope that helps somewhat...
-Sam

[kgfly]

No relationship to delay on the gyro, it is related to the remote gain on the gyro. In the Input Select menu you decide which channel to use for the remote gain control (either Aux2 or Gear) and what switch will be used to select between different settings. For example AU2=INH, GEAR=GYRO means that you will be using the Gear channel for gyro gain control and the Gear switch to select between two programmable gain values.

The Delay adjustment on the 401 is to accommodate slower analog servos. It should be set to zero for a digital servo and initially for an analog servo. If you get bounce on piro stops then increase the delay to 100%. If this fixes the bounce, decrease to 50%. If this is not OK increase to 75% else decrease to 25%. Repeat this process one more time. You don't have to be too precise, within 10-20% is fine so long as the overall tail behaviour meets your needs.

Rate mode allows the tail to weathervane so is actually easier for basic FF and makes for smooth scale-style flying. HH mode makes for a very robotic flying style but is necessary for backwards flight or 3d-style manouvres.

[EBCooper]

No matter what I do the only switch that will allow me to select between the two values is the Hold, Rudder D/R switch in the upper right corner of the radio. Right now I have the gear switch set to gear and the aux 2 set to gyro. I changed those to what you said but nothing changes as far as what switch controls the 0 or the 1 setting.

The other ?. What does the sensitivity values in the gyro menu actually do?

[kgfly]

To be honest I would recommend you don't use the Gyro sensitivity menu at all, it is just a source of confusion and over complicated for what 99% of people need. The sensitivity settings are the gyro gain controls.

Here's what I recommend.

1) In the Input Select menu set it to AUX2=INH, GEAR=GEAR.
2) In the Travel Adjust menu with the Gear switch Up set the the value to 50% (this is your HH/AVCS gain) and with the switch Down set the value to 60% (this is your Rate mode gain.
3) Ensure your Rudder trim is zero in all flight modes. and Rudder travel adjust is +100/-100
4) Rebind your Rx with the Gear switch up and the ThrottleHold on

Now what you should have when you turn on your heli without the Tx turned on is that the 401 will initialise and go into HH/AVCS mode (steady red led). Turn on your Tx and once it connects the gyro should remain in HH mode. Move the Gear switch down and you will be in Rate mode. The Gyro led should go off.

Now follow the Finless guide to setting up the tail/401 gyro. To adjust your gyro gain all you need to do is change the travel adjustment for the Gear channel. To change you piro rate change the travel adjustment for the Rudder channel.

[Finless]

Actually for some reason I prefer the gyro menu! Seems easier to me as I dont have to go mess with end points and worry about a switch.
I only use the ONE condition in the gyro menu not 2 conditions. I havent found a need to have 2 different gain setting depending on normal, idle, or hold.

Bob

[Raydee]

Hey Bob I have one for you, lets say I have my model all setup and ready to go but I decide to change the gyro function from the gear switch to the actual menu that you use. Will I have to rebind the tx and Rx or do I only have to do that when I change my enpoints?

[EBCooper]

Ok, I'm clear on set up now but what does the % values or sensitivity actually do?

[Finless]

Ray, I see no reasdn to rebind!

EBCooper, the % value is how much gain. NOW JR (DX) doesnt map to the same value Futaba radios do. So to calculate how much REAL gain your getting that the vlaue in the radio and do this.
(value -50) x 1.44 = Futaba Gain
so for instance mine is at 74 in the gyro menu
74-50 = 24 now 24 x 1.44 = 35 gain (rounded).

Bob

[Jermo]

I have to disagree with you Ken. Using the Gyro sense menu is MUCH easier and applicable. I currently only use one setting for gain as Finless does but when I'm checking out my setup it makes for a quick menu to tweak WITHOUT changing my actual flight settings. Eg.. set normal to 1 and use a different gain setting or use Hold to toggle a gain for setup/testing. I use the Hold setting more often to do setups because it's safer.

[Gino CP]

For the longest time I couldn't get gyro remote to work on my DX7 and AR6100. I've always assumed that I should set INPUT SELECT of the GEAR channel to GYRO. After all, this is what the Finless video showed. That is what the Users Manual implied. Perhaps I missed it. Nobody told me that the AR6100 didn't have a GYRO channel. Only 7 channel or better does. I thought the GEAR doubled as a GYRO channel, selectable through the INPUT SELECT menu. Duh.

So when I set INPUT SELECT to GEAR>GEAR, viola! Remote gyro sensing is now possible. Adjustments made on the TRAVEL ADJUST menu for the GEAR channel. HH mode remote adjustments (+ value) are responding. My tail holds on +85. However I have no idea what the ballpark value is for Rate mode (- value). Does a higher (-) value increase or decrease gain?

[Skiddz]

Huh? I'm running an AR6100 in my 450V2 and have the [INPUT SELECT] set to GEAR>GYRO. I've got the gyro plugged into ch4 and the gain wire plugged into ch5.

I run AUTO in the GYRO SENS menu and have both rate values set to set to 75%. F.MODE doesn't matter (for me) 'cuz both the 0 and the 1 rates are identical.

[Gino CP]

Hmm, looks like more tweaking for me then. I certainly would like to use the Gyro Sense menu features. Conflicting posts gets me confused. But so far, this is the first time I got gyro remote working.

[Jermo]

Gino,
sounds like you are trying the change the gain but haven't assigned values to the flight modes. Check out my video I take alot of time to explain it. It's in Finless Bob's Techroom under Jermo's DX7 setup video.

[Gino CP]

I'll check that out. But for now, using Gear>Gear hh mode works. BUt I don't know what value to put for rate mode. In rate mode what increases gain? Going to 0% or to -100%? I tried -28% and tail just drifted stringly counterclockwise.