9CHPS and gyro sens

[stikflyer]

How do you adjust/set the gyro sensitivity with the 9CHPS? The manual for the GY 401 gives a couple examples and mentions AFR/ATV but how does relate to the 9CHPS? :?

[WillJames]

ATV is endpoints in that radio I believe. Adjusting your ATV's on the rudder channel speeds up or slows down your piro rate.

[MarkD]

Go to the Gyro Sens in Advanced Menu

MODE > GY
MIX > ACT
RATE-UP > AVC 50%
DOWN > NOR 50%

SW>F (if thats the switch were you want to switch gyro modes with)

or you can select SW>COND so the rates change with different flight modes

The values of 50% are starting points you will have to set them once flying

[RaceMechaniX]

I have the same set-up with the 9CHPS and a 401 and am having a wild tail wag. I have checked the servo response and the direction is correct. I initially tried the 50% AVC and NOR 50% all the way down to 1% AVC and 1% NOR. Still outrageous tail wag. I am using a Futaba S9154 digital servo with about 11mm length from ball to center of horn. I have tried adjusting the delay and switching the DS switch, but same wag no matter what I try. Any suggestions.

Thanks,

Tyler

[ferincr]

I have the same set-up with the 9CHPS and a 401 and am having a wild tail wag. I have checked the servo response and the direction is correct. I initially tried the 50% AVC and NOR 50% all the way down to 1% AVC and 1% NOR. Still outrageous tail wag. I am using a Futaba S9154 digital servo with about 11mm length from ball to center of horn. I have tried adjusting the delay and switching the DS switch, but same wag no matter what I try. Any suggestions.

Thanks,

Tyler
I had the same problem at the beginning and it was that the servo gain mix was in the INH position. Make sure to switch that to ON.

[RaceMechaniX]

Thanks Fernando,

I'll make sure that function is switched on. I have a feeling its in the INH position.

Tyler

[BarracudaHockey]

I have the same set-up with the 9CHPS and a 401 and am having a wild tail wag. I have checked the servo response and the direction is correct. I initially tried the 50% AVC and NOR 50% all the way down to 1% AVC and 1% NOR. Still outrageous tail wag. I am using a Futaba S9154 digital servo with about 11mm length from ball to center of horn. I have tried adjusting the delay and switching the DS switch, but same wag no matter what I try. Any suggestions.

Thanks,

Tyler

DS ON, Delay 0 for a 9254 (i'm assuming thats what you meant)

What helicopter is that on? You probably need a longer servo arm, I'd guess that at that distance your limit pot is maxed out, lengthen the arm to 16 mm or 17 and that should put your limit at or near 100 depending on your heli. Set the gains back to 50 and make sure channel 5 is 100/100 and the mix is ACT and not INH. Also make sure your gyro is booting in heading hold mode, that is blinking for a few seconds then coming on solid.

Andy

[stikflyer]

How do you turn on the delay? Is this something you do at the servo or in the radio? I can change the percentage figures but the column down the right side says (off).

[BarracudaHockey]

Delay is controlled by a pot on the top of the gyro, labeled DELAY and should be 0 for a digital servo.

[stikflyer]

Thank you, what does the delay menu in the radio itself do? You can change the settings for different channels including rudder. Would this have any effect on the gyro?

Thanks,
Kevin.

[BarracudaHockey]

You can have different trims, pitch curve and throttle curve settings for each flight mode. DELAY in the 9C menu slows down the servo response during the switch between flight modes. An example is lets say you have a normal flight mode set up for 1/2 stick hover and an idle up at 3/4. Throw the switch in a hover and it drops like a brick (goes from 5 to 0 degrees as fast as the servo can get it there)

Now you add in some delay and flip the switch and the collective servo slowly responds to the new setting then resumes full speed operation. This gives you time to get the stick where it belongs. There's no practical use for this on the rudder channel as different trims in different modes on the rudder will only confuse your gyro.

[stikflyer]

Now it's beginning to make sense to me.
Thank you.

[BarracudaHockey]

Now it's beginning to make sense to me.
Thank you.

Thats when its time to worry. :D