How many chanels required for crow and v tail  
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All Forums >> RC Airplanes >> RC Gliders, Sailplanes and Slope Soaring >> How many chanels required for crow and v tail
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How many chanels required for crow and v tail - 1/26/2005 11:56:11 AM   
zorka


 

Posts: 132
Joined: 5/31/2003
From: Panama,
Status: offline 		Hi,

How many chanels are required on a receiver to be able to mix ruder and elevator on a V tail sailplane ( 2 servos) and have also ailerons with crow mix (2 servos) capacity? I have a Futaba CAP9 radio. Can a hitec micro 555 handle these mixes and leave on chnel for esc? Any recomendations on programing?

Thanks for the help.
       Post #: 1

RE: How many chanels required for crow and v tail - 1/26/2005 12:20:14 PM   
rscarawa


 

Posts: 543
Joined: 1/26/2004
From: Dallas, NC, USA
Status: offline 		It is more a function of the transmitter and the Futaba radio you have is pretty high end. V-tail only takes two channels. Crow mixing takes a minimum of three channels. If you use 4 channels, you can setup the flaps to work as ailerons when you want them to. What gets real interesting is how many channels does it take to have crow mixing and proportional throttle. I have a JR8103 and I can not have a setup with all of this. I have to put throttle on a toggle switch.

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Scot

(in reply to zorka)
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RE: How many chanels required for crow and v tail - 1/26/2005 12:25:01 PM   
zorka


 

Posts: 132
Joined: 5/31/2003
From: Panama,
Status: offline 		Hi Scot,

I only have ailerons so do want to mix flaps in negative sense into them to work as airbrake for landings, dont need mixing throttle. So cn you clarify total chanels required including throtle esc is what 5 chanels or 6 chanels with my CAP9?

Thanks
Peter

(in reply to rscarawa)
       Post #: 3

RE: How many chanels required for crow and v tail - 1/26/2005 1:42:13 PM   
rscarawa


 

Posts: 543
Joined: 1/26/2004
From: Dallas, NC, USA
Status: offline 		What kind of plane is this? Do you have a rudder?

I have heard of people using negative flapperon and up elevator as a brake but I have never tried it. If you have a balsa fuse and a rudder, you should get in the habit of forward slipping to loose altitude if this option is available to you.

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Scot

(in reply to zorka)
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RE: How many chanels required for crow and v tail - 1/26/2005 2:40:41 PM   
TFLG



Posts: 142
Joined: 3/15/2003
From: MO-VAL, CA,
Status: offline 		If you only have ailerons then you cannot have "crow". Crow requires ailerons and flaps. It's flaps down, ailerons up and then elevator mixed in too. So you would need 6 servos and a minimum of 5 channels preferable 6.

Sounds like what you want to do is mix flaperon or spoileron. If the ailerons go up it's Spoileron, if they go down it's Flaperon. Flaperon often leads to lack of roll control so Spoileron is prefered in most cases. This mix should require 4 channels. One per aileron and one for the rudder and one for the elevator.

TFLG

(in reply to rscarawa)
       Post #: 5

RE: How many chanels required for crow and v tail - 1/26/2005 2:54:55 PM   
zorka


 

Posts: 132
Joined: 5/31/2003
From: Panama,
Status: offline 		Thanks TFLG,

Your right, I want spoilerons only for landing as I do not have flaps. So requirements for V tail mix and Spoilerons are a receiver with 5 chanels minimum as one chanel required for ESC throtle and 4 for Spoileron, and V tail for servos one for ruder one for elevator and one each aileron.Is this correct. I do have a 9CAP futaba so can program the mixes necesary with a 5 chanel Hitech 555 feather receiver right?

Peter

(in reply to TFLG)
       Post #: 6

RE: How many chanels required for crow and v tail - 1/26/2005 4:36:19 PM   
TFLG



Posts: 142
Joined: 3/15/2003
From: MO-VAL, CA,
Status: offline 		The radio can do it for sure. I am not sure about the reciever though. Futaba uses channels 1 and 7 as aileron channels so I am not sure if you can run separate ailerons using a 5 channel reciever. You could run them off a Y- harness but then you would have to install the servos so that both face the same direction which is not normal. You should be able to use a mix to slave the second aileron to channel 1 using the free channel in the reciever.

I usually set up spoileron so that I have about 30% up on both ailerons and then you will also need to mix in about 15% down elevator. I assume you will set this mix on the slider since you must have a motor (ESC).

TFLG

(in reply to zorka)
       Post #: 7

RE: How many chanels required for crow and v tail - 1/26/2005 7:14:25 PM   
SoCal GliderGuider


 

Posts: 1207
Joined: 3/23/2004
From: SoCal, CA, USA
Status: offline 		You need the hidden 6th channel on the Hitec 555. In some cases you can us a P-Mix and drive another channel as a slave. As to servo count TFLG is correct with the four. Search this web site for the Hitec 555 mods. Not that difficult to do. I've changed pin out 5 to 6 so I could use the 555 for V-tail mixing with out slaving the channels in the transmitter.

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Any Lift Is Good Lift!!!

(in reply to TFLG)
       Post #: 8

RE: How many chanels required for crow and v tail - 2/6/2005 2:59:56 AM   
aeajr



Posts: 5492
Joined: 1/14/2003
From: Long Island, NY, USA
Status: offline 		Spoilerons take two channels with two servos, one for each aileron. Add elevator compensation and that is a third channel and one servo.

Throttle and rudder each need one.

No problem on a Micro 555 on a Futaba 9C. I have one.

As I recall there is a menu somewhere that askes which channels are used for ailerons and flaps. You have to make the right selection to have two aileron servos, ch 1 and 5, and have them provide flapperon/spoilerons,

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Clear Skies and Safe Flying!
Ed Anderson
Moderator
Park Pilot Program Partner

(in reply to SoCal GliderGuider)
       Post #: 9

RE: How many chanels required for crow and v tail - 2/15/2005 2:35:22 AM   
spaulj



Posts: 31
Joined: 11/15/2002
From: St. Paul, MN, USA
Status: offline 		You're talking about a wing with flaps AND ailerons, right? That's the only way you can do crow. If so, you are going to need to use a 7 channel receiver. Believe me, I've tried to make your setup work with 6 channels with no luck with the 9C & 9Z. You could pull the 7th channel from an electron 6, as many have done, but that tiny solder work looks to challenging to attempt without a lot of practice!

Your setup is going to be:
right aileron: channel 1
right vtail: channel 2
butterfly (crow): channel 3
left vtail: channel 4
right flap: channel 5
left flap: channel 6
left aileron: channel 7

We're only transmitting on 6 channels, but you have to remember that butterfly uses channel 3 as a master!

Now, I've tried to mix channel three to (unused) 8, and mix channel 7 to channel three, but after an evening of messing around with pmixes, links, etc. I could not get it to work. The next day I went out and bought a hitec superslim which simplified everything!

If anyone out there knows how to make a vtail 2 servo wing sailplane work on 6 channels, please speak up!

Now if you just have ailerons, then you're talking about setting activating flaperons in your radio, going into the parameters menu for AIL2 on 5&6. Then you can set up spoilerons, camber, reflex, and so on with a 555 receiver.

-PJ

< Message edited by spaulj -- 2/15/2005 2:42:04 AM >

(in reply to aeajr)
       Post #: 10

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