Spectrum DX18 non-control surface functions

Spectrum DX18 non-control surface functions Gallery slideshow

View related threads: (in this forum | in all forums)

Logged in as Guest

Users viewing this topic: none

Search This Thread

Printable Version

All Forums >> RC Airplanes >> RC Jets >> Spectrum DX18 non-control surface functions

Page: [1]

Message

<< Older Topic Newer Topic >>

Spectrum DX18 non-control surface functions - 1/7/2013 10:43 AM

Justflying1

Posts: 355
Score: 105
Joined: 4/29/2011
Last Login: 5/22/2013
From: Melbourne, AUSTRALIA
Status: online

Hello everyone,

I was just wondering about the x- plus 8 module.

I understand that things like ailerons, rudders, elevators, are your primary controls but, what about the following.

Throttle

Flaps

Thrust vector servos

Kill switches (ECU)

Could the above control be plugged in to the Module. I would think the Kill switches can but not sure about the other three.

I also do realize you can put landing gear, lights, canopy etc.

Your help would be much appreciated.

Ivan

_____________________________

If you have to borrow, you cant afford it

Hide Signatures

Post #: 1

RE: Spectrum DX18 non-control surface functions - 1/7/2013 10:53 AM

madmodelman

Posts: 1858
Score: 110
Joined: 10/3/2006
Last Login: 5/22/2013
From: Corby, Northants, UNITED KINGDOM
Status: offline

You can plug anything into the expander, all channels are proportional but the refresh rate is a little slower, hence primary flight controls want to be on the main receiver.

_____________________________

Stuka, P51, Super Chipmunk, Super Stearman R170, BE2e, Javelin, Hawk, F16, L39, F86, Viperjet. Need an F4!!

Hide Signatures

(in reply to Justflying1)

Post #: 2

RE: Spectrum DX18 non-control surface functions - 1/7/2013 11:01 AM

Justflying1

Posts: 355
Score: 105
Joined: 4/29/2011
Last Login: 5/22/2013
From: Melbourne, AUSTRALIA
Status: online

Thank you for the reply,
But what im not sure about is the throttle, Flaps , thrust vector servos.
Would these be classed as primary controls.

Ivan

_____________________________

If you have to borrow, you cant afford it

Hide Signatures

(in reply to madmodelman)

Post #: 3

RE: Spectrum DX18 non-control surface functions - 1/7/2013 11:16 AM

Dr Honda

Posts: 1588
Score: 100
Joined: 4/4/2005
Last Login: 5/22/2013
From: Latrobe, PA, USA
Status: offline

I would say no on the thrust vector, or throttle, since they are primary controls. I would say flaps are OK since they are generally run slow anyway. (they are on a delay)

_____________________________

Tony
Owner of A&L Motorsports (formerly ARO Products) Manufacture of custom alloy parts.

Hide Signatures

(in reply to Justflying1)

Post #: 4

RE: Spectrum DX18 non-control surface functions - 1/7/2013 11:57 AM

madmodelman

Posts: 1858
Score: 110
Joined: 10/3/2006
Last Login: 5/22/2013
From: Corby, Northants, UNITED KINGDOM
Status: offline

The difference is 2048/1024 between rx and expander, you would not notice this difference on the thrust vector or anything else for that matter. It's still fast.

I would personally consider that elevator, ailerons, rudder and throttle should be on the main reciever, anything else would be fine on the expander.

_____________________________

Stuka, P51, Super Chipmunk, Super Stearman R170, BE2e, Javelin, Hawk, F16, L39, F86, Viperjet. Need an F4!!

Hide Signatures

(in reply to Justflying1)

Post #: 5

RE: Spectrum DX18 non-control surface functions - 1/7/2013 12:40 PM

DougV

Posts: 926
Score: 110
Joined: 6/30/2006
Last Login: 5/22/2013
From: Miramar, FL, USA
Status: offline

The difference is 2048/512 between rx and expander.

Doug.

Hide Signatures

(in reply to madmodelman)

Post #: 6

RE: Spectrum DX18 non-control surface functions - 1/7/2013 1:42 PM

smitty1001

Posts: 1855
Score: 103
Joined: 6/30/2002
Last Login: 5/21/2013
From: Fort Worth, TX, USA
Status: offline

A key point to remember - as of right now, IIRC, the failsafe on the expander channels is "HOLD" only.

_____________________________

Jet Central Tejas

Hide Signatures

(in reply to DougV)

Post #: 7

RE: Spectrum DX18 non-control surface functions - 1/7/2013 1:44 PM

Greg Wright

Certified

Posts: 1045
Score: 102
Joined: 9/4/2008
Last Login: 5/22/2013
From: Aurora, IL, USA
Status: offline

You want to put the throttle and flaps into the main receiver as well.

_____________________________

Greg Wright
Not a Horizon team member/ But would love to be one!!!!!!!!!!!! BVM Jets/Jetcat

Hide Signatures

(in reply to DougV)

Post #: 8

RE: Spectrum DX18 non-control surface functions - 1/7/2013 3:11 PM

madmodelman

Posts: 1858
Score: 110
Joined: 10/3/2006
Last Login: 5/22/2013
From: Corby, Northants, UNITED KINGDOM
Status: offline

I stand corrected Doug! Same principle though.

Gary.

_____________________________

Stuka, P51, Super Chipmunk, Super Stearman R170, BE2e, Javelin, Hawk, F16, L39, F86, Viperjet. Need an F4!!

Hide Signatures

(in reply to DougV)

Post #: 9

RE: Spectrum DX18 non-control surface functions - 1/7/2013 3:22 PM

zonker123

Posts: 631
Score: 140
Joined: 4/17/2003
Last Login: 5/23/2013
From: Grifton, NC, USA
Status: online

quote:

ORIGINAL: Greg Wright

You want to put the throttle and flaps into the main receiver as well.

I attempted to use the 9ch RX with the Xplus on my recent Dragon build. I did not like the way the flaps responded to the radio inputs on the Xplus. Appeared sluggish and inconstant from one side to the other. I was using separate channels for the flaps. Went with a 12 ch RX so that I had all 12 chs @ 2048 and the flaps worked liked they should.

I would not use the Xplus on any flight surface - a single surface airbrake would be ok I guess. I would consider the vector control a flight surface since it is used to help with pitch and yaw, I would would want everything to work in conjunction with each other there.

A 12 Channel RX would give you all 12 channels @ 2048 despite what the Futaba ads proclaim.

_____________________________

Jet Central Rabbit, Cheetah, and a Rhino.
Boomerang Jets Gang. Team 2DogR/C

Hide Signatures

(in reply to Greg Wright)

Post #: 10

RE: Spectrum DX18 non-control surface functions - 1/7/2013 7:46 PM

dubd

Certified

Posts: 2890
Score: 135
Joined: 8/6/2007
Last Login: 5/23/2013
From: Bay Area, CA, USA
Status: offline

quote:

ORIGINAL: zonker123

quote:

ORIGINAL: Greg Wright

You want to put the throttle and flaps into the main receiver as well.

I attempted to use the 9ch RX with the Xplus on my recent Dragon build. I did not like the way the flaps responded to the radio inputs on the Xplus. Appeared sluggish and inconstant from one side to the other. I was using separate channels for the flaps. Went with a 12 ch RX so that I had all 12 chs @ 2048 and the flaps worked liked they should.

I would not use the Xplus on any flight surface - a single surface airbrake would be ok I guess. I would consider the vector control a flight surface since it is used to help with pitch and yaw, I would would want everything to work in conjunction with each other there.

A 12 Channel RX would give you all 12 channels @ 2048 despite what the Futaba ads proclaim.

+1

My plan is to use the 12 ch rx and X-plus for ancillary features like speed brakes, cockpit, etc.

Hide Signatures

(in reply to zonker123)

Post #: 11

RE: Spectrum DX18 non-control surface functions - 1/7/2013 9:48 PM

Justflying1

Posts: 355
Score: 105
Joined: 4/29/2011
Last Login: 5/22/2013
From: Melbourne, AUSTRALIA
Status: online

Thank you Everyone for all your input.

So if I used a 12 channel receiver with an X- plus module this will obviously give me 12 channels at 2048 and 6 channels at the slower resolution.

Is this rite?

Ivan.

_____________________________

If you have to borrow, you cant afford it

Hide Signatures

(in reply to dubd)

Post #: 12

RE: Spectrum DX18 non-control surface functions - 1/8/2013 12:13 AM

Greg Wright

Certified

Posts: 1045
Score: 102
Joined: 9/4/2008
Last Login: 5/22/2013
From: Aurora, IL, USA
Status: offline

Ivan,

By using a 12 channel receiver and the X-Plus8 it will give you 10 channels at 2048 and then 8 channels at the lower resolution.

_____________________________

Greg Wright
Not a Horizon team member/ But would love to be one!!!!!!!!!!!! BVM Jets/Jetcat

Hide Signatures

(in reply to Justflying1)

Post #: 13

RE: Spectrum DX18 non-control surface functions - 1/8/2013 12:43 AM

Justflying1

Posts: 355
Score: 105
Joined: 4/29/2011
Last Login: 5/22/2013
From: Melbourne, AUSTRALIA
Status: online

Hi Greg,
At the moment I have a 12 channel receiver with the x-Plus module connected to it.

This gives me 10 channel at 2048 and 8 channels on the lower resolution as you stated.

I heir that I can get 12 channels at 2048 when a 12 channel receiver is connected.

How do I do this with my DX-18? channel 6 and 7 seem to not be there.

Also if I then connect my x- plus module wouldn't that then give me 12 channel at 2048 and 6 channels from the X-plus module at the lower resolution.

Not trying to argue with you, I'm just trying to understand my new radio.

I still have my JR 11X but want to use the Spectrum DX 18 on my Mig and future Jets.

Ivan

_____________________________

If you have to borrow, you cant afford it

Hide Signatures

(in reply to Greg Wright)

Post #: 14

RE: Spectrum DX18 non-control surface functions - 1/8/2013 12:54 AM

Justflying1

Posts: 355
Score: 105
Joined: 4/29/2011
Last Login: 5/22/2013
From: Melbourne, AUSTRALIA
Status: online

Also when I change from 22ms to 11ms it states that all digital servos must be used.

I am using all digital servos except for the servo operating the valve bank on the hydraulics.

Will this cause me problems?

Should I be changing it to digital ?

I don’t mind changing to digital if I have to but considering I have a few non-digital servos in perfect working order I thought that a valve bank operation would be a waste to use digital.

_____________________________

If you have to borrow, you cant afford it

Hide Signatures

(in reply to Justflying1)

Post #: 15

RE: Spectrum DX18 non-control surface functions - 1/8/2013 1:52 AM

Greg Wright

Certified

Posts: 1045
Score: 102
Joined: 9/4/2008
Last Login: 5/22/2013
From: Aurora, IL, USA
Status: offline

Ivan,

You will get the 12 channels if you do not use the X-plus8 but you still have to turn on the x-plus to activate the other two channels as AUX 6 & AUX 7 then and only then will you get your 12 channels on 2048. As far as changing from 22ms to 11ms you don't want to do that unless you are planning to do some 3D flying with your jet. It's not required that you change that because you will never need the servos the move that fast. Your AUX 6 and Aux 7 channels will now be X1 & X2. I'm still dealing with trying to figure this radio out myself but i have a few friends that work for Horizion Hobby here in the USA and i just give them a call for help. And Yes if you change to 11ms you would have to have all digital servos.

_____________________________

Greg Wright
Not a Horizon team member/ But would love to be one!!!!!!!!!!!! BVM Jets/Jetcat

Hide Signatures

(in reply to Justflying1)

Post #: 16

RE: Spectrum DX18 non-control surface functions - 1/8/2013 1:54 AM

BaldEagel

Certified

Posts: 9346
Score: 118
Joined: 10/12/2005
Last Login: 5/22/2013
From: Wychling, Kent, UNITED KINGDOM
Status: online

On the old expanding module the extra channels did not have a trim function, may be an idea to check this if you are going to use them on a primary control surface, just a thought.

Mike

_____________________________

No matter what anyone says 100% is the maximum you can get.

Hide Signatures

(in reply to Justflying1)

Post #: 17

RE: Spectrum DX18 non-control surface functions - 1/8/2013 2:15 AM

Justflying1

Posts: 355
Score: 105
Joined: 4/29/2011
Last Login: 5/22/2013
From: Melbourne, AUSTRALIA
Status: online

Hello Greg, Mike,
Thank you for the information.

Ivan

< Message edited by Justflying1 -- 1/8/2013 10:00 AM >

_____________________________

If you have to borrow, you cant afford it

Hide Signatures

(in reply to BaldEagel)

Post #: 18

RE: Spectrum DX18 non-control surface functions - 1/8/2013 9:59 AM

Justflying1

Posts: 355
Score: 105
Joined: 4/29/2011
Last Login: 5/22/2013
From: Melbourne, AUSTRALIA
Status: online

Sorted it all out. You can adjust all 12 channels, A little slow I now but im not to good when it comes to electronics , computers, etc.

_____________________________

If you have to borrow, you cant afford it

Hide Signatures

(in reply to Justflying1)

Post #: 19

RE: Spectrum DX18 non-control surface functions - 1/8/2013 3:10 PM

wfield0455

Posts: 90
Score: 100
Joined: 9/22/2005
Last Login: 5/22/2013
From: Holliston, MA, USA
Status: offline

quote:

ORIGINAL: Justflying1

Also when I change from 22ms to 11ms it states that all digital servos must be used. I am using all digital servos except for the servo operating the valve bank on the hydraulics. Will this cause me problems? Should I be changing it to digital ? I don’t mind changing to digital if I have to but considering I have a few non-digital servos in perfect working order I thought that a valve bank operation would be a waste to use digital.

Changing from 22ms to 11ms won't accomplish anything unless the receiver you are using supports 11ms operation. Also, even the receivers that support 11ms operation don't support it on all channels.
This started out as a helicopter thing and is normally implemented only in the channels associated with swash plate operation. The DX18 added it to the rudder channel also but still not on all channels. Just leave the defaults in the transmitter and let it bind in the best mode for the receiver.

Using analog servos on things like air valves, etc, won't cause you any problems.

_____________________________

Wayne

Hide Signatures

(in reply to Justflying1)

Post #: 20

RE: Spectrum DX18 non-control surface functions - 1/8/2013 7:00 PM

Justflying1

Posts: 355
Score: 105
Joined: 4/29/2011
Last Login: 5/22/2013
From: Melbourne, AUSTRALIA
Status: online

Thank you Wayne for the information.

I will do just that.

With all this new technology coming around the corner and hitting us in the face with all these settings its sometimes confusing LOL.

Just when you think you are starting to understand a hole new stuff comes out

Ivan

_____________________________

If you have to borrow, you cant afford it

Hide Signatures

(in reply to wfield0455)

Post #: 21

Page: [1]

All Forums >> RC Airplanes >> RC Jets >> Spectrum DX18 non-control surface functions
Page: [1]

Jump to:

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America

1.031RCU1