rrTV-PHOTO   New HD TV
HOME   rrTV-PHOTO   GALLERIES   MY GALLERY   HELP-FAQ
myHOME PM pmRR MEMBERS 365 ONLINE 74 EVENTS SEARCH REGISTER  START HERE
 
1 page1531 viewsPOST REPLY
Mikado Modellhubschrauber . CanoMod . A Main Hobbies

.
.
e-E-Flite Blade CP CX 400-3D > Blade CP+ - True 6 Ch?
 
 
Pilot143
Heliman
Location: Ft. Lauderdale, FL

I'm a little new to this, so forgive my wording on a few things.

The rx and tx for the BCP says 6 channels on it. How do I access the other 2? or can I? If I'm correct... I'm only using 4 of them now. (but I'm counting 5 servos/controls on the rx) I can see the reciver has one more plug for a servo?

another question I have is I have an Old Futaba T6XA FM tx that I've used on my planes. Can I use this on my BCP? the crystal works fine and controls everything almost... one of the servos isn't mixing I think?

Thanks again for your help...
05-25-2006 Over year old.
 
 
stickyfox
Key Veteran
Location: Troy, NY, US

The CP transmitter is a six channel, but it does not use channel 5. The rest of the channels are used for main motor speed, tail motor speed, and the three servos. All mixing is done in the transmitter. AFAIK, you can attach something to the extra channel on the receiver and utilize the sixth channel for whatever you want. I have only the E-Flite transmitter, though.

There is a connection in the transmitter for another pot, but I can't seem to get the transmitter to activate the unused channel. It's probably programmed out in the controller.

I don't know about your transmitter, but to fly the CP it would have to support CCPM specifically. If it has helicopter mode you may be in business.

-fox
05-25-2006 Over year old.
HOMEPAGE  
 
 
Pilot143
Heliman
Location: Ft. Lauderdale, FL

It has a Heli mode to it... I think I'm just going to have to play with it and see... plug in another servo and see what it does. The tx has all sorts of options (that I haven't played with in years) and allows multiple setups to be saved.

thanks for the help...
05-25-2006 Over year old.
 
 
stickyfox
Key Veteran
Location: Troy, NY, US

I dug up my notes from my attempt at hacking the transmitter. If it helps, channels 1, 2, and 6 are the servos, channel 3 is the main motor, and channel 4 is the tail motor.

-fox
05-25-2006 Over year old.
HOMEPAGE  
 
 
Blind Pilot
Heliman
Location: Eleanor WV U.S.A.

I have hacked the 4 in 1 reciever, and have found the mixing part seems to be in the reciver side of the board and the tail control and gyro mix is in the second half of the reciever system.. The transmitter seems to be a standard six channel.. I went brushless on the main motor and still retaining the brushed tail motor. If anyone would have any idea's where I could locate a brushless tail motor, P.M. me or post reply. I check back and read the board often.














Keep flying and have fun
05-26-2006 Over year old.
 
 
stickyfox
Key Veteran
Location: Troy, NY, US

I made it sound like channel 4 goes straight to the motor, but you're right, it goes to the gyro in the 4/1, and then to the motor.

When you say mixing goes on in the receiver, what exactly do you mean? I've found several conflicting definitons for the term. I was referring to the process by which collective and cyclic (aileron and elevator) are transformed into the three swashplate servos.

My claim is that this goes on in the transmitter, so a third party radio would have to support this function (and be configurable for the CP's 120° swashplate as well). If the transmitter is set up for a mechanically mixed heli, it won't work on the blade.

-fox
05-26-2006 Over year old.
HOMEPAGE  
 
 
Blind Pilot
Heliman
Location: Eleanor WV U.S.A.

You are correct Fox.. It has to have a transmitter that is capable of helicopter functions. I have switch crystals around for a different transmitter and without setting any ccpm mixing in the transmitter(servos correct direction,etc)and have got the same mixing per channel. I hate to use the word "assume" it is getting it's info from the reciever side of the 4 in 1. I like to try and figure stuff out, as well as learn from others. Kinda off the subject, I just got finished hooking a second tail motor up on my C.P. Had to set the porportioning dial Back to correct a nose right problem, but the results seemed to be worth the effort.. Seemed to lock the tail in better..More soild. I am also running a external gyro. Did not have to adjust any.
I hope I might have helped some, I do learn alot by reading others post's. Thank you..







Keep flying and have fun
05-26-2006 Over year old.
 
 
stickyfox
Key Veteran
Location: Troy, NY, US

I saw a reference somewhere to splitting the 4/1 apart and using another gyro.. is this what you did with yours?

-fox
05-26-2006 Over year old.
HOMEPAGE  
 
 
Skiddz
Veteran
Location: Carlsbad, CA

Quote 
I have hacked the 4 in 1 reciever, and have found the mixing part seems to be in the reciver side of the board and the tail control and gyro mix is in the second half of the reciever system.. The transmitter seems to be a standard six channel.. I went brushless on the main motor and still retaining the brushed tail motor. If anyone would have any idea's where I could locate a brushless tail motor, P.M. me or post reply. I check back and read the board often.


The headers for CH3 and CH4 were installed "upside down" to interface with the mixing board inside the 4-in-1. To access these channels either solder a servo extension directly to the pins, solder pins to the pin "stubs" or get double sided 3-pin inline headers and remove the old headers and replace 'em with the double sided units. I soldered pins to the "stubs" to plug my ESC into CH3.

As for the brushless TR motor, a lot of folks are using the Feigao 12mm motor with a Phoenix 10 ESC. If you go that route, you need to go with all separate components (i.e ditch the 4-in-1) or figure out a way to use channel 4 and still the the TR mixing. There are adapters you can plug into the TR motor interface to convert that signal back into something an ESC can utilize. I'm still contemplating this as going separates will run me about $150 more and thus far my upgrade costs are well over what the CP cost me new. It does, however, fly *MUCH* better than the stock bird.

A helicopter is 10,000 parts spinning rapidly around an oil leak.
05-27-2006 Over year old.
 
 
Blind PilotHeliman - Location: Eleanor WV U.S.A. -
Yes Fox, I added a external gyro after splitting the 4 in 1, and it really seemed to give the tail a more "locked in" feeling.. Foward flight and 3D moves are more percise now than they have ever been.. Having a blast flying the CP...


















Keep Flying and Have Fun

05-30-2006 Over year old.
 
 
Skiddz
Veteran
Location: Carlsbad, CA

The Rx is a "generic" 6 channel. You can split the 4-in-1, pull the Rx module and replace it with a different Rx and still use the gyro/mixer board. Just gotta break out the soldering iron.

A helicopter is 10,000 parts spinning rapidly around an oil leak.
05-31-2006 Over year old.
 
 
Eric_N57105
Heliman
Location: Riverside, CA

Quote 
I have hacked the 4 in 1 reciever, and have found the mixing part seems to be in the reciver side of the board and the tail control and gyro mix is in the second half of the reciever system.. The transmitter seems to be a standard six channel.. I went brushless on the main motor and still retaining the brushed tail motor. If anyone would have any idea's where I could locate a brushless tail motor, P.M. me or post reply. I check back and read the board often.


Not true, blindpilot. The receiver is a completely standard single conversion RX. You could pop it out of the 4n1 and use it in an airplane. There is no mixing at all on the receiver board. Mixing is done in the transmitter. It isn't a standard TX.

The gyro is mounted on the other board as you say and connects to a microcontroller. So do the proportional mixing pot, gain pots and signals from CH3 and CH4. Gyro and propo mixing is accomplished entirely in software, not hardware.

I've done a schematic for the 4n1, but it is not yet in a form where I could share it and I'm not sure of the legal implications if I did. So I probably won't.

Eric
www.ke6us.com
05-31-2006 Over year old.
HOMEPAGE  
 
 
Eric_N57105
Heliman
Location: Riverside, CA

Quote 
I made it sound like channel 4 goes straight to the motor, but you're right, it goes to the gyro in the 4/1, and then to the motor.


Channel 3 and Channel 4 from the receiver to go the microcontroller, not the gyro. The gyro also connects to the microcontroller. The microcontroller drives the main and tail motor ESCs after gyro input and propo mixing have been added in software.

Quote 
When you say mixing goes on in the receiver, what exactly do you mean? I've found several conflicting definitons for the term. I was referring to the process by which collective and cyclic (aileron and elevator) are transformed into the three swashplate servos.

My claim is that this goes on in the transmitter, so a third party radio would have to support this function (and be configurable for the CP's 120° swashplate as well). If the transmitter is set up for a mechanically mixed heli, it won't work on the blade.


Yep. Your claim is correct. eCCPM is done in the BCP transmitter, not the receiver. Propo mixing (between main and tail) is done in the microcontroller on the ESC/gyro board. No control mixing is done on the receiver board.

Eric
www.ke6us.com
05-31-2006 Over year old.
HOMEPAGE  
 
 
1 page1531 viewsPOST REPLY
Boca Bearings . XHELI.COM . Advantage Hobby

.
.
e-E-Flite Blade CP CX 400-3D > Blade CP+ - True 6 Ch?
  UPDATE SCREEN   PRINT TOPIC Advertisers 

Subscribe to This Topic

Saturday, May 17 - 7:25 am - Copyright © 2000 - 2008 runryder.com | email | link to rr | runryder needs cookie