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Old 06-15-2005 | 06:28 PM
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From: g䶬e, LA, SWEDEN
Default What is mixing?

Hi

dont call me stupid!! just kidding heh.. however I really dont know exactly what the mixing (in trasnmitter-receiver stuff) is. Since i am on a project i am in extreme need to know how this mixing works or how it s connected. The gyro also. I m totally helpless.. who am I gonna ask nay info- help is very appreciated!!
Old 06-15-2005 | 06:33 PM
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Default RE: What is mixing?

Well..... sound slike it would help to have someone local to help....

but over simplyfied.....

Mixing is using a computer radio and setting it up so when you do one thing.....something else happens....
there are MANY different mixes....

like... you apply flaps so then your system automatically applies a bit of down elevator due to increased lift....

or,,,, you apply rudder to fly a knife edge and the system automatically applies a bit of ailieron and elevator to fight coupling...
those are a couple examples, but there are MANT more....
Old 06-15-2005 | 07:06 PM
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From: g䶬e, LA, SWEDEN
Default RE: What is mixing?

If i take your example with the rudder and allerion , does that mean that that it takes two channel-places on the receiver, when you only moves the rudder / the stick to the left.


Old 06-15-2005 | 07:36 PM
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Default RE: What is mixing?

Yes.... If I move the rudder, than the aileron moves too.....

so it is one channel as a master and another channel as the slave....

there are MANY different mixes....
Old 06-15-2005 | 10:00 PM
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Default RE: What is mixing?

Another mix is having your ailerons coming down as flaps if you have to aileron servos. Also there are many you can program yourself. :-)
Old 06-15-2005 | 11:22 PM
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Default RE: What is mixing?

What you do with different alcoholic beverage's to make one drink. As already said. Combine two different surfaces to move off one stick on transmitter. The Gyro is a seperate electronic device that controls a surface (usually rudder) to make movements that are controled electronicaly quicker than you could yourself.

Cheers.
Old 06-16-2005 | 01:51 AM
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Default RE: What is mixing?

It's what DJ's do [8D]

Oh, and also it's the linking of one (or more?) slave channel(s) to react after a master channel
Old 06-16-2005 | 06:25 AM
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From: g䶬e, LA, SWEDEN
Default RE: What is mixing?

ok. thank you so much for your answers, but I still dont understand one thing :

EX. when I move the rudder stick to the left(the rudder and the allerion activates), can I programme so that I only move the rudder ALONE in flight .. meaning that i can shift between these two setups??? kinda diffecult question

and by the way where can I find a website that is about Transmitter, mixing and gyro cauz I need more help. How much they cost too..

Thanx-Kalle
Old 06-16-2005 | 07:21 AM
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Default RE: What is mixing?


ORIGINAL: sky-pilot

ok. thank you so much for your answers, but I still dont understand one thing :

EX. when I move the rudder stick to the left(the rudder and the allerion activates), can I programme so that I only move the rudder ALONE in flight .. meaning that i can shift between these two setups??? kinda diffecult question

and by the way where can I find a website that is about Transmitter, mixing and gyro cauz I need more help. How much they cost too..

Thanx-Kalle

I understand what your saying. You want to know whether or not you can turn on or off a mix while in flight. I've never thought about it but I don't think I can do it with my Futaba 9C. Having the rudder as the master channel and aileron as the slave would be a little odd I think, but I could be wrong.
Old 06-16-2005 | 07:31 AM
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Default RE: What is mixing?

Mixes can be switched off and on.

Most radios above a simple 4-channel have some mixing built into the transmitter. Aileron-rudder mix is the most universal and is used to counter adverse yaw on planes, in particular those with long wings and large ailerons out near the wing tips. A Piper Cub is a good example. Another popular mix is elevator-flap where the flaps move opposite to the elevator for increased lift for tighter maneuvers.

The medium to high priced radios, and mixing is in the transmitter, have several "free" mixes where you choose the channels to be mixed. Some people don't use any mixing and some people use mixing a lot. For example, I use mixing for on-board glow on seaplanes. I put a micro switch on a separate servo and set the cut off/on point with adjustments to this servo. Then I mix it to throttle so it turns on at about 1/3rd throttle. Another mix I use is to set throttles on twins on different channels and mix them together.

Mixes also come in different types. There is a simple mix where no trim is involved. This is the most common. A second mix type is the trim mix where the slave channel is affected by the trim lever just like the master channel. A third type is the multi-point mix where the mixing values may be changed at different points along the stick travel. 5-point (center, both ends and both mid points) or 7 point (2 mid points between center and the end point) are on several medium to high end transmitters. The multi-point mixes are used extensively by heli fliers.

You may also make response curves by mixing a channel to itself using a multi-point mix. For example, if you want to change your throttle response curve for 3D flying, you can mix throttle to throttle using a multi-point mix and set the intermediate points where you want them for a custom throttle response curve.
Old 06-16-2005 | 02:04 PM
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Default RE: What is mixing?

adscott: R master -> A slave; this is a common mix in aerobatic flying used to fix rolling issues, namely knife edge tracking. Mixes of this type (fixing tracking issues) are typically left on all the time. However, nearly every radio I have seen that supports more complex mixes can assign them to a swtich, so they can be turned on/off in flight. You 9C should support this. Cheers.
Old 06-16-2005 | 02:39 PM
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From: g䶬e, LA, SWEDEN
Default RE: What is mixing?

okey tjanxx alot!!

now where can I find one of those trasnmitters that is not so expansive??
Old 06-16-2005 | 02:50 PM
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From: g䶬e, LA, SWEDEN
Default RE: What is mixing?

To be honest I didnt understand in detail( slave, masters , receiver, connecting the channels etc.) how every thing works, not even pretty major ways, all I know is that you can mix the channels together some way some how.. so I am wondering if there is some WEBSITE that are covering the whole thing about this .. that would be so so apreciated...
Old 06-16-2005 | 04:28 PM
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Default RE: What is mixing?

If you are looking for a manual for a radio that explains how it will be programmed to do the mixing, many radios are different. For an example go to www.horizonhobby.com and look at the manual for the JR 6102. There are also Futaba, Hitec, among others to look at.

http://www.horizonhobby.com/Shop/ByC...odID=JRP6644**

There's the link directly to the radio manual and programming guide. You can read about the setup and exactly how to program the mixing.
Old 06-17-2005 | 12:07 PM
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Default RE: What is mixing?

I'm not aware of a general website with the information you seek. As FlyingT pointed out, every radio is a bit different you will always need to consult your manual.

When pilots first discover mixing on their radio, they tend to go nuts playing with all the settings. This is only natural, but you will find that there typically are only a very few advanced mixes commonly used, and they entirely depend upon the plane. I can try to expand some and maybe others will add to my list.

Master - the control channel that runs the mix, but is typically not affected by the mix.

Slave - the channel that will show the effect of the mix

Link - Used on some radios to set the mix to the "virtual" channel, i.e. when mixing to Ailerons (CH1), only what is plugged into CH1 will be effected. If you have dual ailerons on say CH1 & Ch6, you will want both CH1 & Ch6 to be effected. By enabling the Link function, the mix will equally effect all "aileron" channels, not just CH1.

Linear - A mix that is linear across the entire master input. Most common mix.

Curve/Point - A mix that has adjustable points. This is used when the linear mix just won't work and you need to fine tune how strong the mix is across the master inputs.

Expo Mix - Similar to the curve mix, but you cannot set individual points. The mix shape is determined by the expo setting.

Offset Mix - Rarely used except in helicopters.


Common Mixes

Flaperon - Used to increase the pitch performance of a plane, typically only used on fun-fly types. Requires two aileron servos on separate channels. This mix is Elev -> Flap. When elevator moves up, both ailerons drop, etc.

Airbrake - Used to reflex ailerons for increased drag, typically only used on fun-fly types. Both ailerons are raised to help dump lift and add drag.

Aileron to Rudder - Typically used on planes with dihedral or high wings to help prevent adverse yaw. A better solution is aileron differential IMO.

Rudder to Aileron - Typically used on aerobatic planes to fix roll coupling at knife edge.

Rudder to Elevator - Typically used on aerobatic planes to fix pitch coupling at knife edge.

Flap to elevator - Used to counteract the pitch moment caused by deploying flaps.

Throttle to Elevator - Sometimes is helpful on planes that pitch based on throttle settings. A better solution is to fix the downthrust/incidence issue that is causing this behavior.

Throttle Curve - Typically used to make the throttle feel more linear.

The above is pretty much my list for common mixes. On rare occasions I have used some more complex mixes, but in general, the above list is my playbook. Oh, there are "mixes" like dual rates, stick expo, throttle cut, etc. I left off, but I assumed we were past that. Cheers.
Old 06-17-2005 | 02:16 PM
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From: g䶬e, LA, SWEDEN
Default RE: What is mixing?

ThANX

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