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how to set up a simple V-Tail ????

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how to set up a simple V-Tail ????

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Old 11-01-2009 | 09:34 PM
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LDM
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Default how to set up a simple V-Tail ????

I am building a flying wing out of foam , need a simple V-tail with my three channel HiTec and I simply can not get it to work .
1)mix is turned on
2)Tried every possible combination on the two servos both in , one in and one out , one front one facing back ect ect ect
3)tried three differant receivers and differant connections in the receiver
all I get is the proper up and down , but when I go to try "left /right they move as if the are still set as elevators -please advise
Old 11-02-2009 | 12:05 AM
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Default RE: how to set up a simple V-Tail ????

I don't think you can do a v-tail with three channels. The v-tail needs two itself. Then there's the ailerons and throttle.
Old 11-02-2009 | 12:34 AM
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Default RE: how to set up a simple V-Tail ????

LDM, if the transmitter does not have a delta mix in it you will not get it to work properly. You need a V-Tail mixer advailable at good hobby shops.

Find them [link=http://www3.towerhobbies.com/cgi-bin/WTI0097P?FVSEARCH=V-tail+mixer&P=RF&search3=Go]HERE[/link] I have used the GWS ones before and they work well.

I use one in this model.


Cheers
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Old 11-02-2009 | 02:20 AM
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Default RE: how to set up a simple V-Tail ????

LDM
DuBro used to make a mechanical V tail mixer. I used one in a .15 size Quarter Midget that went about 140
mph. Worked great.
Greg Doe
Smyrna, TN
Old 11-02-2009 | 05:36 AM
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Default RE: how to set up a simple V-Tail ????

sorry , my total bad
I am building a foam stealth bomber its elevons not a V-tail -so I need my focus hi tec radio to mix the airlerons/elevator function .
My problem is I flew this home build about 10 years ago on a the exact same set up -moved onto fule warbirds , pulled the servos out ect .
Now I upograded the motor to brushless ect cant wait to see the performance but for the life of me cant get the servos set .
I am thinking that my hiTec 3 channle radio function is not operating properly when set on Mix I do get the elevator function , but I get it in both up /down and left right .
The radio is not recognizing two functions udner the mix mode
Old 11-02-2009 | 06:22 AM
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Default RE: how to set up a simple V-Tail ????

Its has to be the radio function not responding . I have tried every equation possible on servo positions , this morning early I tried it again and I know the radio mix function tells the elevons go up when pulled back and both down when pushed up === the problem is that they do the same thing when the stick is moved left to right so in the simplest terms ===
I either get true elevator functions or true arlerion function but never true elevon function when the mix is on -
even tried a mirical y- reverser just to see if I was missing something in my servos positions ect .
Old 11-02-2009 | 03:16 PM
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Default RE: how to set up a simple V-Tail ????

In the good old days before transmitter mixing, there were mechanical mixers, but the simplest solution was .. .. elevator servo to one side (say left) elevon; and aileron servo to the other side (right). The clever bit is to hold your transmitter at 45 degrees; IE antenae pointing to the side.
With your transmitter pointing to the right - now when you push the stick forward you get full down from your elevator servo and full left out of the aileron servo. As the aileron servo is on the right wing, it now is in full down position - - So both elevons are in full down - hence full down elevator.
And so on - the controls work correctly for all stick positions.
It's a bit difficult to describe but it is very simple to set up and use.
We used to use this system extensively for foam delta slope combat. As we became used to this set up we found that we no longer needed to hold the transmitter at 45 degrees.
Old 11-02-2009 | 03:39 PM
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Default RE: how to set up a simple V-Tail ????

LDM, you wil need two mix's. Mix 1, Elevator to aileron, Mix 2 Aileron to Elevator. When aileron stick is moved mix 2 works, when elevator stick is moved mix 1 works. You will have to reduce the end points on the servo travel as to not overdrive the servo. Its still a lot easyer just to spend the 15 bucks and get the electronic V-tail mixer and not have to worry about the mixing being turned off.

Cheers
Old 11-02-2009 | 10:44 PM
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Default RE: how to set up a simple V-Tail ????

Thanks Ghost , I will try the eletronic mixer
Old 11-03-2009 | 05:43 PM
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Default RE: how to set up a simple V-Tail ????


oops
Old 11-03-2009 | 10:29 PM
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Default RE: how to set up a simple V-Tail ????

LDM In about 1977 or 78 I had a 1/2 A Delta published in Model Airplane News I used separate ailerons and elevator. It worked great.
It was built with torque rods for the ailerons, and Monokote hinges for the elevator. I won't give a complete explanation. Hopefully you can figure it out, or order the plans. Good Luck Greg
Old 11-05-2009 | 06:15 AM
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Default RE: how to set up a simple V-Tail ????

hey I figured it out and thanks to all for the help . Over the last 5 years I have flown fules warbirds in the 65" thru 75" . In every case I was useing Y connectors for airlerons , flaps ect .
So not thinking at all , I used a Y conn on my two little servos when in reality they each needed to be plugged into there own receiver connection .
So its time for a public servace massage
"I am the idiot of the week "
Yes its ok , you can chime in , I deserve it !!!!! lol
but so glad it worked out , I was simply looking for a deversion as I start to tackle my Fw190 glassing portion of the build , so this little fun project is finally working out !

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