DX7 and 401

[Pistol Pete]

I'm sorry to bring this up again but its the one thing I just can't seem to get straight. I'm not having any issues with my birds but have seen people set this up differently and just want the light to come on in my head.

Some guys say forget the gyro menu and just use the atv on the gear channel to adjust the gain. Others say the atv is used to adjust piro rate. I tried turning off my gyro menu and used this method, adjusting the atv did nothing, I could not get the tail to wag, twich or do anything other then fly perfect.

OR

What are you guys setting up in the menu where its says aux2 and gear? According to the manual it says the aux 2 channel turns on the gyro gain if your using a remote gain but it doesn't say what to set it at. Then it says to put the gyro under the gear channel. Anything above 50 is HH and under 50 is rate or normal mode. I ended up using Fmod (whatever that is) under aux 2 and gyro under gear. It seems to work fine but I just want a little more clarification.

[th3tick]

I have mine set up like this:

AUX2 GEAR
AUX2 GYRO

I also have the gyro menu set up as:

[GYRO SENS]
>AUTO F.MODE
NORM:0
RATE: STNT:0
0: 80% HOLD:0
1: 80%

With this setup, I'm always at 80%. I found a "good" setting, and just stick to it. While it looks like you could set per-mode rates, I don't think this actually works.

I also used to have the gear switch to select the gyro gains, but gave up. I just couldn't find a reason to want other than the "good" setting.

John

[Jermo]

atv on the GEAR channel adjusts gain if you aren't using the gyro sense menu, atv on the RUDDER channel adjusts the piro rate for the GY401 gyro. If you aren't sure just watch the Finless series for the GY401, then watch my setup vid for the DX7 and just set it up using the gyro sense menu.

Either way is ok but until you understand how it works it's simple to use gyro sense.

[Pistol Pete]

Tick its not possible to have aux 2 on gear.

Thanks Jermo, that clears a lot up. One question, it seems way easier to just use the atv's but the only thing I noticed is the gyro stays in HH until I run it all the way down to under 10% and I'm not sure why. The range is from 0 to 150 so what would be a good starting place? My last flight I had it set at 80% and the tail was perfect . Your video said I want the gain to be at 32 (which is 72 on the gyro menu) so on a scale from 0 to 150 where would that be, is it the same as the gyro menu?

[th3tick]

Tick its not possible to have aux 2 on gear.

Wow, that totally blew away my formatting...

I was trying to show it as it appears on the screen, with AUX2 under AUX2, and GYRO under GEAR. I didn't mean AUX2 was set to GEAR!

Let's try that again:


AUX2 GEAR
AUX2 GYRO
I also have the gyro menu set up as:


>AUTO F.MODE
NORM:0
RATE: STNT:0
0: 80% HOLD:0
1: 80%


Better?
John

[Pistol Pete]

That makes more sense tick. The only problem with that is you can't switch from HH to Normal mode for setting up the tail by using a switch.

[Jafa]

You only ever do that on the bench anyway - a few times a year
I just edit the gain in the TX when I need to do setup work
(Never use normal mode at the field - don't want to waste a switch on it)

[Jermo]

the way I do it is change the mode for heading hold to 1 and change the gain for 1 to be rate. Then after I'm done I change HH back to 0.

Another tip is to move the rudder left and right quickly to reset the gyro to center position. This is sometimes necessary if you move the model's direction after the gyro has initialized.

I don't believe using the gear switch is easier.

The reason we end up with diffferent gain numbers is due to setup gearing and servo selection. Settings on the gyro and any drag on teh control system can also affect gain. I replaced my tail rod with a custom made CF rod setup because I got tired of messing with the "upgraded" setup from Align. The new tail slider is an improvment but the metal pushrod is a step back imho. I have to catch up on vids so I might shoot one for that as well.

[th3tick]

That makes more sense tick. The only problem with that is you can't switch from HH to Normal mode for setting up the tail by using a switch.

I originally had it set up on the switch. The issue I was fighting which resulted in this was when I went to Idle 1/2, no matter the switch position, it would dump me into rate mode. NOT the way to learn Idle mode!

So then I put it so that 0 was 0% and 1 was 80%, and set it up so that Normal and STNT were 1, and HOLD 0, but that still didn't work right.

So, I just went with "always on", and suddenly, it behaved.

I'm a little confused why you'd need rate mode for setup. In HH I can still run it to the endpoints to check for binding the same, and I do the center setup with the heli off anyway.

John

[Pistol Pete]

Thanks guys, that cleared a lot up for me.

[Jermo]

John,
I guess you can check limits in HH mode but the slider just drifts where it wants to without a control input. Rate mode for setup feels right because you have direct controls.

I love the gyro sense menu for gain control because I can run different gains as I increase my headspeed.

The other key is to know to move the rudder left and right quickly several times to reset the tail to center in HH mode.

[th3tick]

John,
I guess you can check limits in HH mode but the slider just drifts where it wants to without a control input. Rate mode for setup feels right because you have direct controls.

I love the gyro sense menu for gain control because I can run different gains as I increase my headspeed.

The other key is to know to move the rudder left and right quickly several times to reset the tail to center in HH mode.

I'm probably being lazy in getting my setup done in HH, but it seems to work. I just check the range there, and center it based on that.

I hadn't thought about changing the gain on a per-mode basis. That's a cool idea! I'm still not sure why I couldn't stay in HH unless I set a decent value on both 0 and 1. I only (now) wish there was a per-mode setting, plus the ability to set it to 0 with a switch. Ah well, to dream ;)

John