WI53072

Guys,

I am in the process of switching over from my old version DX7 to the new DX8 and have just a few (Yeah Right) questions. If I choose a dual aileron wing set up and a dual elevator set up do I need to program mixes like I use to do (Mix 5 and Mix 6) on my Dx7? Also, by choosing dual aileron does this automatically turn on my differential as I used that to help with adverse yaw in my turning this particular plane?

From the onset I am thinking/guessing this:

Right Aileron into the Aileron Channel and Left Aileron into Aux1
Right Elevator into the Elevator Channel and Left Elevator into Aux2

Use dual aileron wing and dual elevator tail

No mixes?? Is this possible?

Thanks Guys!!!

Paul

AndyKunz

Yes, it's possible! Just try it!

The differential is not automatic - you need to tell it how much you want. There's a menu for that ("Differential").

Andy

Rob2160

Hi Paul, congrats on the new DX8, I am sure you will love it as I do mine..

Yes, activating Dual Ailerons will turn on the differential option - you will have to set the amount of differential you want.

Your servo assignment is correct

You won't need any mixes if just using dual elevator servos acting as pure elevators. .. however if you also want your elevators to act as "Ailevators" then yes you will need the mixes.

My little EDF stinger has ailevators, (on a Futaba 8FG) but everything you see here is also possible with the DX8.

This thing rolls about 1080 degrees per second..

[youtube]http://www.youtube.com/watch?v=CPEGU08U8lk[/youtube]

WI53072

Guys,

This is going to be excellent! Do any of you use the throttle curve and if so any suggestions on this? I see that it has the ability to be set up with expo on the curve. Any thoughts on what percent to use at each setting. This set-up is for a DLE35 and it is this option that prompted me into buying the DX8 to begin with. I never used throttle curve so any suggestions would be appreciated! [8D]

Thanks!

Paul

Red Baron Gary

My Feedback: (59)

Throttle curve is a wonderful idea when dealing with non linear carbs on nitro airplane engines. I have setup curves on other pilot's nitro aircraft so the low *IS* low, mid is half of available rpm and max is ...well max.

Many are amazed at how after this the yin and yang of the motor rhymes with their thinking.

Electric motors are for the most part linear when the correct propeller is matched to the demand needed and the rpm's available.

Gary

WI53072

Guys,

Thanks so much for you assistance with my new toy!

I have Model one all set-up and am ready to bind it to my aircraft. This brings up another question. I did not see a bind button on the back of the Dx8 like the one on my old old Dx7. So I assume the receiver is handled the same way however the Dx8 is different.

Paul

Aerocal

The Bind button is the momentary Trainer/Bind button on the top left (see label).

WI53072

Aerocal, Thanks!

Onto programming the Dx8 for my H9 RV8. This model has two flap and two aileron servos! Due to the geometry of how the wing was set up and the servo's were to be installed, I think I used a program mix for this plane because one of the servo's was reversed. Now I gotta go back and check the assembly thread on this plane to remember what I did!! Flap switch says 3 positions.......hmmm!?

Any suggestions on how to do this easily would be greatly appreciated!! [8D]

Thanks!

Paul

AndyKunz

I would just go to the Servo screen, select Reverse, adjust the appropriate channel and be done with it.

Andy

WI53072

Ok Guys,

Here is what I am going to do for the next plane a H9 RV-8:

Wing Type: 2 Aileron Servos & 2 Flap Servos.

Right Aileron to the Aileron Channel and Left Aileron to Aux 1.

Right Flap to the Gear Channel and Left Flap to Aux 2.

Now here is my question:

Do I need a mix? or does the radio automatically do the mix???

I see that on the radio menu I have a RAL, LAL, RF and LF but they don't say where I physically connect the servos to the RX??

Need some additional guidance here!!!

Paul

WI53072

Wow! This is one nice radio that does SOOOO MUCCCCH! I am really liking this change tremendously!

It does so many things automatically!

Paul

Rob2160

I use a well proven technique called trial and error.

I will check my radio when I get home to better answer your specific example, but I think in general with most radios, the slots on the RX are the same order as the channels are listed in the TX Servo monitor screen.

The trial and error method works too.. just use a spare servo and test each RX port and see which control on the TX it corresponds to...

AndyKunz

I think from your next post that you figured it out, but just in case ...

The channels are listed in order on the Monitor screen starting with receiver port THRO at one end, which is shown at THR on the radio. Then in order you see RAL which plugs into AILE, RUD into RUDD, ELE into ELEV, and so on.

No need to make a mix, that's the whole purpose of Wing Type and Tail Type.

Andy

WI53072

Guys

This radio is AWESOME!

Paul

chuckk2

And Spectrum Just announced a DX9!
With voice capability no less!

Rob2160

Yes, I have been watching the previews. This will be my next radio..

http://www.modelflight.com.au/radios...io-mode-1.html

chuckk2

While I like the ability to have 9 or more output channels available, I'd also say that I'd like to see more proportional input controls in addition to the ones currently on the DX8.
Then, there is another little thing - - -
These days, there is no reason why (other than a programming nightmare) that in addition to the traditional built in and user configurable mixes, a PC and application program might be used to
setup very complex mixing. Some of the industrial control systems have capabilities similar to what I'm thinking about.

In simplistic terms - -
Input(s) Digital, proportional, On/Off, multi position
Logic and computational functions from simple to complex
Output to channels (physical or logical)

A graphic representation of things might go a long way towards making the mixing functions
simpler to understand.

AndyKunz

Chuck - you mean like the two additional sliders on the DX9? Are those the inputs you're looking for?

As for a PC interface, I know of several guys who started on making them for the DX8. Everybody gave up after a while because it turned out to be so easy with the radio, the PC didn't offer any great advantages.

Andy

chuckk2

"Are those the inputs you're looking for?"
Yes and no! The old Futaba style side sliders is a possibility, as are front panel pots.
A challenge is to locate things so that they are operable without requiring a third hand!
Something about ergo-metric design?
Anyway - -
The other things I mentioned seem to me to be a logical extension of the classic schemes, and have
a potential to really increase the flexibility of a computerized transmitter.
In the "dark ages" (70's) I was working for a large company that had an industrial control background.
One of the products was a "control panel" that in programming mode, showed a graphic and logic
representation of the functions/operations/logical relationships between inputs and outputs.
It always seemed to me that the computing power available today has the capability to provide vast
changes and capabilities that currently exist only in a modeller's "how can I do that" or why can't I do that thinking.
Think of flow chart related representations as a start, and then the capability to move the elements around on a graphics representation.

AndyKunz

Then you'll like the DX9 because both sliders are right at your fingertips.

Andy