mixing
#1
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From: Leeds, UNITED KINGDOM
Do any of you use mixing on your amazing looking machines is so i have the following problem I have got the futaba 7c 2.4 ghz transmitter my hovercraft uses two props at the back to steer with much like a tank so I was told to use vtail mixing would this be the right choice when I go to the vtail menu it asks me to turn on the vtail which I have it then says ele which is set at 50% and rud which is also set at 50% first off would this be the right set up for the above situation then at the bottom it says ch2/4c which means absolutely nothing to me so how on earth do I set up some mixing for this hovercraft also how do I save whatever I have done if it makes any difference I have got the two motors plugged into 2&3 channel and lift in channel 6
PLEASE HELP
Regards Tim
PLEASE HELP
Regards Tim
#2

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From: Reading, UNITED KINGDOM
What do you want to achieve ? Do you want to run the two motors from one stick ?
My understanding of V-Tail mixing is this:
On a standard plane, there are two perpendicular control surfaces for the tail, a vertical rudder and a horizontal elevator.
These are controlled by a servo each, say from one stick.
When the stick goes forwards and backwards, the elevator goes up and down. The rudder doesn't move.
When the stick goes side to side, the rudder goes left and right. The elevator doesn't move.
On a V-Tail plane, there are two inclined control surfaces for the tail which both act as both rudder and elevator.
Now when the stick goes forwards and backwards, both surfaces go up and down.
When the stick goes side to side, both surfaces go left and right.
This means each servo must be controlled from both channels, hence the need for a mixer.
The default channels for elevator and rudder on your transmitter are 2 and 4, so you'll need to move to these channels. You should then find that the right stick controls both motors. I would guess that stick forwards is both motors forwards, stick backwards is both motors backwards, stick left is one forwards and one backwards and stick right is the opposite. Not sure what your hover will do when you do that though !!
Disclaimer: This is all theoretical as I've never actually used this function ;-)
My understanding of V-Tail mixing is this:
On a standard plane, there are two perpendicular control surfaces for the tail, a vertical rudder and a horizontal elevator.
These are controlled by a servo each, say from one stick.
When the stick goes forwards and backwards, the elevator goes up and down. The rudder doesn't move.
When the stick goes side to side, the rudder goes left and right. The elevator doesn't move.
On a V-Tail plane, there are two inclined control surfaces for the tail which both act as both rudder and elevator.
Now when the stick goes forwards and backwards, both surfaces go up and down.
When the stick goes side to side, both surfaces go left and right.
This means each servo must be controlled from both channels, hence the need for a mixer.
The default channels for elevator and rudder on your transmitter are 2 and 4, so you'll need to move to these channels. You should then find that the right stick controls both motors. I would guess that stick forwards is both motors forwards, stick backwards is both motors backwards, stick left is one forwards and one backwards and stick right is the opposite. Not sure what your hover will do when you do that though !!
Disclaimer: This is all theoretical as I've never actually used this function ;-)
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From: , SINGAPORE
I think he wants to mix throttle and steering, unless you are goingto substitue your throttle channel withyour elevator channel(you might need to remove the spring on the elevator channel) i think the only other way to get ard this is to buy a vtail mixing circuit (very cheap) and connect it to your throttle channel and your aileron/rudder channel. That way you got both forward motion and turning controlled by the 2 props.
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From: Skedsmokorset, NORWAY
If it's like a tank, you only use your motors to turn.
If you have an additional motor to get lift I don't know how to achieve that.
But for turning just with the 2 motors you can use Wing-Tail Mix type: EVELON
See your manual for which 2 channels on your receiver you need to connect your to ESC's. Then you turn on the EVELON Wing-Tail mix. You should set up the Aileron and Evelon on your right stick to go both 100%.
Then you might need to set it up on mixing so that they go down to 50-80% when you turn.
This would give you both motors 100% straight forward and 1 motor decrease thrust to ex 80% when you try to turn and the other motor still at 100%.
in the Brushless thread I have explained how I set up a tank in this matter, so if you find that thread I explain it on a Futaba 10C and I have "explained" all my settings.
Isn't there a rudder on this machine you can put a servo on? It looks like it.
If you have an additional motor to get lift I don't know how to achieve that.
But for turning just with the 2 motors you can use Wing-Tail Mix type: EVELON
See your manual for which 2 channels on your receiver you need to connect your to ESC's. Then you turn on the EVELON Wing-Tail mix. You should set up the Aileron and Evelon on your right stick to go both 100%.
Then you might need to set it up on mixing so that they go down to 50-80% when you turn.
This would give you both motors 100% straight forward and 1 motor decrease thrust to ex 80% when you try to turn and the other motor still at 100%.
in the Brushless thread I have explained how I set up a tank in this matter, so if you find that thread I explain it on a Futaba 10C and I have "explained" all my settings.
Isn't there a rudder on this machine you can put a servo on? It looks like it.
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From: Ottawa,
ON, CANADA
NoBrainer:
You gonna make an optional military version of the hovercraft with the gun tubs like the few that got used in 'Nam, Hover Tim?
I gotta admit, I understand the concept too... that it operates two channels at once, moving the tail rudder as it adjusts the power feed to the two front motors. Its ~getting~ there that baffled me so much that I traded away the rare Futaba 6EX surface use Tx because I couldn't program it. Tamiya's manuals use better english these days, but the level of detail is poor still. Bet if I'd looked online someone whoud have an 'Newbie Guide to Channel Mixing' somewhere... (We're not idiots, are we?)
I may get a mixer box just to play with it, and perhaps to upgrade one of those twin-prop toy boats Mato sells. that or use it for my PT boat to help it turn (Upgrading a Lindberg 1:32 scale '109' kit)
You gonna make an optional military version of the hovercraft with the gun tubs like the few that got used in 'Nam, Hover Tim?
I gotta admit, I understand the concept too... that it operates two channels at once, moving the tail rudder as it adjusts the power feed to the two front motors. Its ~getting~ there that baffled me so much that I traded away the rare Futaba 6EX surface use Tx because I couldn't program it. Tamiya's manuals use better english these days, but the level of detail is poor still. Bet if I'd looked online someone whoud have an 'Newbie Guide to Channel Mixing' somewhere... (We're not idiots, are we?)
I may get a mixer box just to play with it, and perhaps to upgrade one of those twin-prop toy boats Mato sells. that or use it for my PT boat to help it turn (Upgrading a Lindberg 1:32 scale '109' kit)



