Blade CX2 and DX6i

[MaxKool]

Ok I have a DX6i that came with my Blade400, long story short I can get my cx2 to fly with it.

It communicates with the cx2, all servo and throttle actions are good. But in order to get it to fly I have to turn the Gyro all the way down till its basicly off. And its NO fun flying with Zero gyro.... If I keep it at the same settings that work perfectly on the Stock TX the tail waggs like a dog on speed. It starts off with slight left to right movements and acts like a pendulum and gets worse and worse till it wont even stay in the air.

Ive tried both Aco and Heli modes and have gone through the whole setup several times. I just cant find any problems with what im doing. Ive even tried 2 differant 3in1 units and both act the same way.... anyone have any ideas? Im running out of ideas and I Realy want to use my main radio with the CX2 so im not keeping 2 radios around...


HELP hehehe

[MaxKool]

Well this is basicly whats been going on. No one seems to know why some people have this problem and others dont. I think ill call HH and see what they say, there is no way I should have to turn off the gyro to use the DX6i concidering that the B400 uses the sane reciver....

[carlo_the_wonder_frog]

You have something set wrong in your transmitter, or you have something plugged into the wrong channel. It should work just fine with the DX6i if it was working with the stock tx.

[mcnabbwr]

Go to the Spektrum web site, they have documents there showing how to set up the CX2 with the DX7 radio. You should be able to set up your DX6i the same.

[zurie]

yah.... uh... there is no "gyro" on your blade CX2... its all internal.

the gyro, ESC, speed controller, etc etc etc are all containted in your 4 in 1 unit.

it only has 2 channels... because your CX2 is a 4 channel unit... sooo your tail shouldn't wag like a Trex with a head holding gyro, because your heli doesn't have a real head holding gyro.. all its doing is regulating the speed of blade 1 vs blade 2 in order to keep the tail from rotating... ie: head holding..

but its not a individual channel like channel 5 = gyro.. so turning your gyro up and down shouldn't affect a blade CX 2.

make sense?

basically, you have to set your DX6i to a new setting. like setting 2. (memory 2)

then when you setup memory 2, you set it up like a 4 channel airplane. throttle is from 0 to 100, and left and right controls a rudder like an airplane. and your right stick just controls forward back left and right. thats it. set it up 4 channel, simple style. put the bind plug into channel 1 on your blade CX2, power on the remote holding the bind button. plug in the CX2. power off the remote and back on and press the bind key until you see the CX2 blink a few times and when you let go and give it a few seconds you should be able to move your sticks around and the CX2 should react.

done. if you change your settings on your DX6i and it involves setting gyro up and down and etc etc then your DX6 has incorrect settings and your gyro is incorrectly mapped. it should be set to (off) or unnused. this is all sloved by starting a new memory bank and not copying your bank from your 400., which it sounds like your doing.

[Glockaholic Drew]

Hello, I'm a newbie to the forum, but been lurking for a while. Here is my 2 cents. I have been flying my CX2 with my DX6i for 4 months. All I did was setup a new model with in the Tx. Setup the model type as a "Heli" with a 90* swash plate. I didn't touch any other settings w/in the Tx, except for "sub-trim" settings to center the servo arms and set the standard trim adjustment to zero (all the way down) on the throttle/pitch channel. Just like the Tx which came with the CX2.

If you are having controlling the tail after you bound your CX2 to the DX6i, you might try erasing the model settings you are trying to use for your CX2 and create a new model.

I hope this helps.

[Raptorg2zman]

So all other setting in Tx on the Dx6i stay as the radio defaults ?

[dooley]

Hey gang, just saw this thread and so i tried a few things on my dx6i/cx2. This seems to be working for me.

I setup the tx (dx6i) as helicopter and turned the gyro to INH (inhibit) or OFF.
Set swash mixing to 90 degree.
Then i did the usual reversal on ELEV, AILE and RUDD.
I LEFT the sub-trim and all else alone.
Went back to the main screen and slide my trim down all the way.
Shut down the tx.
Pluged my BIND plug into the BATT term on the cx-2 rx (receiver) and powered it up.
When it stablized in BIND mode, i turned on my tx in bind mode ( trainer switch up) and held it that way until all lights on the cx stopped blinking. I released the 'trainer' switch on my tx. I uplugged bat on my cx-2 and took off the BIND plug.
I turned off the tx.

Then i plugged up the cx2 to ready for flight. Turned on the tx and then flew the heli.
(If your throttle does not work, don't forget to check your trim)

NOTE: My gyro gain had been trimmed perfectly for my old tx before so I was expecting the cx2 to work perfectly.

BUT, just as u say, i got a lot of tail shake from the gyro....so I turned ALL the gyro gain off on the 4-in-1 on the cx2. Now she drifted around. SO i turned up the gain a little at a time until it stablilzed. Now it all seems to work great.

So, why would the 4-in-1 gyro gain be different with dx61 versus the tx that comes with the cx2....here's my theory.

I think that the RX in the heli talks back to the TX and gives it heading info. The tx then factors in your gain /trim/travel adjust etc and sends the correction signal back to the heli and the speed controls react to adjust the heading on the heli.

Sooo i am presuming that the DX6i just interprets that info differently since it also has throttle/rudder travel adjust and trim info in the tx. So i think the sever twitchiness when switching from the original tx to the dx6i is caused because the DX6i magnifies the gain setting on the 4-in-1 on the cx.

I suspect this could vary some between diff version of the tx software. Not sure which version i have. Tx is brand new.

Hope this works for some of you.

[TowPilot]

The DX7 and CX2 setup is to use the ACRO (airplane) setup instead of the helicopter setup.
And reverse three of the servos. That's per the website at Horizon Hobbies and I did not have to adjust anything after binding. It flew as it had before on the original TX.

Here are a few web sites I found when setting mine up. Does the DX6 have ACRO or airplane setup like the DX7? Hope this helps a bit.




This site is superb in that there is a setup link and a system link showing a granular set up of the radio's features.
http://www.modelflight.com.au/eflite/eflite_blade_cx_2_with_dx7.htm


http://www.rcgroups.com/forums/showthread.php?t=625409
Lets get started!
OK, this is what I have done,

1. Reset a spare model on the transmitter to ACRO (airplane, not heli)

2. Set the throttle ATV on the transmitter to low 150%

3. Reverse channels 2 3 4

4. Set expos on aileron and elevator to +25% (or a little more)

5. Bind the DX2 reciever to the DX7 transmitter

I think the only thing I have to explain is the binding process:

5. Bind the DX2 reciever to the DX7 transmitter,
make sure flight battery is disconnected:

a:Start by plugging the binding plug into the "bat" slot in the RX.

b:Make sure to disconnect both motors to the RX for safety

c:Plug in flying battery, wait for the blinking orange LED.

d:While holding the "bind" button on the back of the DX7 turn on the
transmitter.
e:The blinking orange LED on the RX should pause then blink slowly.

f: Disconnect the flight battery and remove the binding plug from the RX

g:Cycle the power on the TX, make sure it's on.

h:Connect flight battery to th RX, check that you have servo control.
If the servos are moving correctly power down the RX.

i: With the flight battery dissconnected, reconnect the motor leads.

j: at this point you want to be off the desk and have the heli in an
open flying area, just in case you did something wrong.

k.Turn on Transmitter

l:Reconnect the flying battery and do a slow runnup making sure every
thing is moving the way it should, if it is, trim and fly.

Now I have to put the mechs in a Kamonv Ka27 body for the AMA show...

Let me know if this helped or I missed something
Thanks
Dave


http://tinyurl.com/4tys8m

Steps to Complete Setup
Here are the simple steps to completing the setup of the DX7 for your Blade CX2. Although it may look like a lot of steps, the following should only take a few minutes.
Select a new model in your DX7 model memory.
Perform the normal binding process (outlined in the transmitter and helicopter manuals) to bind the receiver of the Blade CX2 4-in-1 to your DX7 transmitter.
Set the model type to ACRO. Although standard HELI programming will also work (i.e. – non CCPM), its much easier to use a simple ACRO setup.
Make sure that all Wing Types are set to off (this is the default in a new model setup).
Enter the function list menu in your DX7 TX and set the servo reversing switches for aileron, elevator, and rudder to the reverse direction. For the time being leave all of the subtrim values at “0”.
In the servo travel adjustment menu you can adjust the aileron, elevator and rudder travel up to 150%. A higher travel value will result in more overall control response. Beginners should use approximately 100% travel and advanced pilots can set the travel up to 150% for added responsiveness.

[Pimpy S]

I want to have the dx6i with my cx2, I found this site from Horizon Hobby, will try this weekend, enjoy :
http://www.horizonhobby.com/Articles/Article.aspx?ArticleID=1802

[ENDO1]

do you need the switch shown in the manual? or can you plug the bind plug directly on the rx? then plug in the batt?

[Daedalus]

You can plug the bind plug directly into the receiver.

[ENDO1]

Thanks, used dooley's method and it worked fine, I'm flying with the Dx6i

[piraterrr]

I used the 7 step method that Pimpy S talked about on Horizon's website. I also changed the travel adjust that they mention there. It seems to fly well and is really responsive. It was very easy to program in the DX6i.

http://www.horizonhobby.com/Articles/Article.aspx?ArticleID=1802

[ENDO1]

I've still got quite abit of tail wag. Any ideas on how best to resolve it. the gyro gain doesn't seem to affect it..

[TowPilot]

Are you adjusting the trimmer pot on the 3 in 1 while the heli battery is unplugged?

If not, the new setting does not take effect.

[ENDO1]

it's ok now. i was turning the gain up, it needed to go down. they should add that to the 7 step instructions as it looks like a common issue after changing tx..

[iflymyhelishigh]

WTF? My CX tail sometimes wags...

[TowPilot]

Doesn't that just mean the heli is happy?


Well, I look at it this way, most of the time, mine is very stable and every so often I'll hear a difference in the noise it makes, could be something simple like a bearing chattering one of the motor shafts vibrating in a bushing. If that happens, then there would be instant drag for those few seconds and then no drag. That would make a cheap gyro wag.

Remember, the transmitter, heli and lipo, all for the same price as a good gyro or a gyro and a servo. Not too bad, works pretty good for it's price point.

[misterg74]

I was flying mine with my DX6I had a lot of tail wag with the gyro gain all the way down. I have since broke my DX6I and went back to the stock TX. It really seems to fly better with the stocker........... I dunno:shock:

[MaxKool]

Well I didnt have a set of batts for my stock cx2 radio so I grabbed the dx6i again. Funny you guys should rez this post at the same time...

Anyway heres the deal.

I can get it to fly with the radio set on both Heli@90deg swash and Acro. Flys the same either way. Ive followed all the intructions to a tee, hell ive even had to reprogram my blade400 settings from memory and had no problems, So Its not a user error. Ive gone over the settings and setup dozens of times now. Here is what happens...

When I switch bindings from the stock radio and keep the same 3in1 settings (aprox 75% gain and correct proportional) I get crazy back and forth rythmic tail wagging that gets worse and worse till the heli basicly drops out the the air. I redo the proportion and gain and I end up with about a 25% gain setting and differant proportional(duh) It will now fly pretty good and the tail holds about 80% as well as it did with the stock radio. But its definatly not working like it should, ive takin it to the LHS (wich is a realy good one) and my buddy cant figure it out either... We tried a differant 3in1 and even the reciver from my blade400. Nothin will let me get the gain up to where it needs to be to be 100% as good as the stock radio.... Basicly im at a dead end and its a case of dealing with it.... bleh....

[ENDO1]

I had to turn the gain on the 3 in 1 way down to stop the wagging, it's just an occasional twitter now with just a tiny bit of drift in the nose, which is easy to hold w/ alittle rudder input. I dunno why the DX6i is different from the stock radio...