RunRyder RC Helicopter Topic - OH NO!!! (DX6 prob!! )

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Radio - JR & Spektrum DSM > OH NO!!! (DX6 prob!! )

1stUFO
Heliman
Location: CA

My Posts This: Topic Forum

There seems to be a HUGE problem that I found!!!

When you try to go into idle up (stunt mode they call it) the gyro gain goes into the negative!!! I called tech suport and they said that in order to get it to work, the ONLY way is to UNPLUG the gain sensitivity from the RX. WTF?!?!? AND you MUST have a gyro witch you can MANUALY ajust the gain. So being that iv got a 401, Im sh!t out of luck! AND you only have ONE gain seting of course for ALL your flight modes! Why in hell wouldnt they make a correct gain setting in the radio whitch is like EVERY other radio?

On top of it all......the rep was a PR!K!!!

12-22-2005 Over year old.

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Paul Beard
Senior Heliman
Location: Bigfork MT

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Connect the 401 Aux lead to the GEAR channel.

The Gyro gain is adjusted by setting the travel of the GEAR channel.

GEAR switch towards you sets the gain in normal mode. GEAR switch up, or away from you sets the gain in AVCS mode.

pm me if you have any problems with this setup, I'll help you out.

Paul

12-22-2005 Over year old.

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TMoore
rrProfessor
Location: Cookeville, TN

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On page 69 of the manual you can assign the gyro function to one of four switches so why don't you assign it to a D/R switch and separate it from the flight mode switch, just to see what happens?

It looks like Paul and I doubled up.

TM

12-22-2005 Over year old.

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Paul Beard
Senior Heliman
Location: Bigfork MT

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I have the GEAR channel assigned to the ELEVATOR D/R switch.

Page 69: GER = E

Paul

12-22-2005 Over year old.

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1stUFO
Heliman
Location: CA

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THANK YOU....Ill try that, let you know.
If thats how you do it how come there own techs dont know it?!?! Thats pathetic.

12-22-2005 Over year old.

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DeeTee
Heliman
Location: Bay Area

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I tried that, except that GER=H. Now both N & S mode have the gyro in HH mode,BUT with similar setting. When you switch the H (Hold) switch up, it disengages the gyro HH mode. Is there any way that you can program the gyro to be in HH mode with 2 different settings, one for N & another for S mode?

Danny

01-12-2006 Over year old.

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Micro-Maniac
Elite Veteran
Location: Pasco,Washington Formerly: Captain Chaos

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The best way to use gyro D/R is to assign both elevator and aileron D/R to the aileron D/R switch and use the elevator D/R switch for the gyro (GER=E).

You might be able to create a gyro to gyro mix and assign it to the flight mode switch to give different gains in the different flight modes. I'll browse the manual for such a mix. This is the technique for creating a rudder D/R.

01-12-2006 Over year old.

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Micro-Maniac
Elite Veteran
Location: Pasco,Washington Formerly: Captain Chaos

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Looks doable to me as long as you don't want rudder D/R or some other mix also.

Go to the programmable mix menu and select 5 & 5 as the "from" and "to" channels, then assign it to the flight mode switch (F1 or F0) and then give it a value (%).

The mix works as a percentage of the "from" channel value so I don't think the result of the "to" channel can be more than 25% higher than the "from" channel gain. So you'll probably want the "from" channel to have the higher value and the "to" channel the lower value and assigned the appropriate switch position (F0 or F1) to reflect that in your flight modes.

I haven't actually tested this, but the radio does let me program it.

You'll have to plug a servo into channel 5 and play with it more than I did to see how many rates you'll actually end up with and how useful they'll be. You might end up with 3 useful rates and 1 not-so-useful rate. (shrug).

Remember the "to" channel result is a percentage of a percentage and when you adjust the "from" channel the "to" channel gets adjusted with it so you may have to adjust the "to" channel every time you make a "from" channel adjustment. (That's more hoops than I'm willing to jump through)

. I only use normal mode for powering and spooling up, then it's all idle-up and 1 gyro gain there-after for me unless I'm trimming the rudder.

That reminds me to remind you.. Don't forget to re-bind after every rudder adjustment. The RX powers up in fail-safe mode while it establishes a link with the TX, so it's likely the gyro will use the RX's fail-safe setting as it's neutral position instead of your TX's trim setting.

01-12-2006 Over year old.

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Mark C
Key Veteran
Location: Houston, TX - USA

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I did none of the above.

I assigned it to the flight mode switch. Then you use the sub trim and atv to set the gains. It tells you this in the manual.

My 401 works perfectly fine like this. I have normal mode at 75% and Idle up at 70%

Mark C.

01-13-2006 Over year old.

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Micro-Maniac
Elite Veteran
Location: Pasco,Washington Formerly: Captain Chaos

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Do you also have normal gyro mode for trimming etc.? e.g. A gain below 50% that you can switch to fairly easily?

01-13-2006 Over year old.

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Mark C
Key Veteran
Location: Houston, TX - USA

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Na. I just set the sub trim below 50% if i really need to turn of HH. But that is pretty rare. Matter-of-fact never.

01-13-2006 Over year old.

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Micro-Maniac
Elite Veteran
Location: Pasco,Washington Formerly: Captain Chaos

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Yeah I guess I kinda went off the deep end to the extreme on DeeTee's question

. But if anyone wants 3-4 switchable gyro gains, there's the formula to that theory

01-13-2006 Over year old.

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DeeTee
Heliman
Location: Bay Area

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Hi Mark,

I am wondering when you switch the Flight Mode switch to S from N, does the red LED on the 401 always on? I can only get the LED to be on in 1 switch position, but not both. Thanks.

Danny

01-13-2006 Over year old.

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DeeTee
Heliman
Location: Bay Area

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Eureka! By golly.., I've got it....!!!

Well...., this is what I just found, anyway.

There are 3 areas of adjustment that can be altered.
1) Gear SUB-TRIM
2) Gear TRAVEL ADJUST + (when the switch is in down position)
3) Gear TRAVEL ADJUST - (when the switch is in up position)
This is mentioned in the manual as Mark C pointed out, but I think they need to elaborate more.

(I zeroed the inputs in all the above areas initially)
I found that if you change the SUB-TRIM value to above +7, this will allow the Flight Mode switch, N & S to be in HH mode in both switch positions. With that said, this value is also linked to the sensitivity adjustment for the N & S switch positions.

I have mine, now, at +55 on the SUB-TRIM value (this value becomes the base value for the TRAVEL ADJUST) and 0 on both TRAVEL ADJUST positions. I can add more + values on the TRAVEL ADJUST to increase the sensitivity of the N switch position (down), but for the S switch position (up), the values can only go negative (-) which will decrease the sensitivity. So, really, the N switch position can be more sensitive that the S switch position, but not vice versa.

I guess you can't really compare this radio to the regular heli radio, like the 9CH or similar, for the logic, accesibility and features, but, hey, the price is right, it will do 3D setup and it's the new technology. It works for me.

01-16-2006 Over year old.

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dkshema
rrMaster
Location: Cedar Rapids, IA

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DeeTee -- the red LED is ON solid in HH/AVCS mode, off in Normal mode. If you start the gyro up in normal mode, the red LED blinks to tell you that you need to restart in HH mode.

Dave

01-24-2006 Over year old.

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DeeTee
Heliman
Location: Bay Area

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Yes, you are correct, Dave, I found that if I have the SUB-TRIM (for the GEAR channel)value above +7 (& Gear TRAVEL ADJUST at 0), the LED on the 401 is solid (HH mode) on both N & S Flight Mode.

Below +7, no LED light (NORMAL mode). In this case, I can have HH mode as I increase the gear TRAVEL ADJUST (+) for the N Flight Mode and Normal Mode for the S Flight Mode.

I can configure the radio to have HH mode on both N & S Flight Mode OR HH mode on N Flight Mode & Normal Mode on S Flight Mode. I do fly mine on HH mode for both N & S Flight Mode.

01-24-2006 Over year old.

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ShellDude
Elite Veteran
Location: East Coventry, PA

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I'm really getting tired of banging my head against the wall with this radio and gyro gain.

I love everything else about it, but this gain thing has gotten the better of me.

DeeTee, I followed your advice verbatim. Gear is assigned to the Flight mode switch, Gear Sub-trim is at +75 and travel adjust for normal and stunt mode are both set to 0.

In Normal flight mode, its in AVCS mode and I'm gonna wager that the gain is at 75%. I switch to Stunt and it comes out of AVCS and I'm in rate mode. Light goes out and everything.

Almost at the point where I move it to one of the D/R switches and consolidate D/R on one since I hardly use D/R anyway.

Any help would be greatly appreciated. I also went the custom mixer route and gave up there too.

02-12-2006 Over year old.

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DeeTee
Heliman
Location: Bay Area

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Hi ShellDude,

I looked at my transmitter settings and it seems that you are doing it correctly, but just to confirm, this is what I have on mine.

In the System Mode, GER = F (Gear function switch is with Flight Mode Switch.)

GEAR Subtrim = + 70
GEAR Travel Adjust, Normal Mode (switch is down) = + 0
GEAR Travel Adjust, Stunt Mode (switch is up) = - 0

My 401 is always in AVCS mode (Light is always on solid) in both Normal & Stunt Mode.

Yes, you are correct, the GEAR Subtrim value is the gain value and when you change the GEAR Travel Adjust value in Normal Mode (+) positive value, it will increase the gain value (more sensitive) and if you change the value in the Stunt Mode (-)negative value, it will decrease the gain value (less sensitive). As I mentioned in the previous post, you can have a more sensitive value in Normal Mode, but Stunt Mode will always be less sensitive than Normal Mode. Hope this helps.

02-12-2006 Over year old.

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Rob_T
Elite Veteran
Location: ..

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Quote
As I mentioned in the previous post, you can have a more sensitive value in Normal Mode, but Stunt Mode will always be less sensitive than Normal Mode.

What happens if you reverse the gear channel too? That should flip the normal and stunt sensitivity. (You may need to reverse the sign on the sub trim too to get back to where you were, not sure about that.)

02-12-2006 Over year old.

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ShellDude
Elite Veteran
Location: East Coventry, PA

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Yup, We're on the same page but our radios apparently are not

I wonder if its possible that there is a firmware revision out there. Mine was from the early December batch from Horizon.

I will try again but I think I'll manage regardless. I moved GEAR to the Throttle Hold switch, set the subtrim back to zero and dialed in +75 for the "off" gear limit.

02-12-2006 Over year old.

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Radio - JR & Spektrum DSM > OH NO!!! (DX6 prob!! )

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