bigchap

i am in the early stages of having a large model made for me and my thoughts have turned to controlling it,would it be acceptable to have one person doing the flying whilst somebody else is doing the retracting of undercarriage and the other ancilliaries,i.e.landing lights,flaps,cargo doors for the parachutists to come out of!yes really!,what are your thoughts,obviously i would disable the sticks on the second transmitter.

ifixairplanes

My Feedback: (9)

i remember a MAN article a while back that had a russian Big Bear i beleive. it was on the very last page of the magazine, It was monstrous, 12' wing span ( i think, coulv'e been bigger), four engines, huge! They pilot had one radio, and there was a "co-pilot" working all the other functions, such as gear and lights. So yes it can be done without problem. The reason for a co-pilot is to take the workload off of the pilot. lets see some pictures!!

sean

bigchap

you'll have to wait for pictures but i hope it'll be worth waiting for,as far as me and the designer and builder know this aircraft has not been modelled before,i know it sounds silly but the thing i am most looking forward to is seeing the doors opening and the parachutists coming out!

Texas 3D

My Feedback: (16)

I think if operating 2 tx you want to be on different channels so you don't get confused. This way each tx and rx can only operate what it is hooked up too.

Shortman

My Feedback: (21)

That makes a lot of sense. Should be awesome

DKjens

My Feedback: (50)

If each person (pilot and co-pilot) is going to have their own transmitter, you would have to run them on separate channels, which I don't see a problem in. If you run them on the same channel, disabling the sticks on the co-pilot's radio doesn't prevent the radio from sending out signals to control those channels.
DKjens

bigchap

sorry,but how does that one work?if i don't touch my throttle it doesn't do anything!

PlaneKrazee

My Feedback: (14)

bigchap,

The transmitter is telling the servo to stay where it is at. If another transmitter is turned on it may tell the receiver to go full or half.

There are receivers on the market and comming to the market that can recognize the signal from the first transmitter it sees and then locks to it. FMA is selling them now.

bigchap

sorry,but i had my head up my butt when i posted that one!

s3nfo

My Feedback: (14)

I've seen this done before with complex airplanes with no problem in operation. I've even seen a simple 4 channel radio (on a separate channel, of course) used with the throttle opening the doors and left aileron dropping one set of parachutes and right aileron dropping a second set of parachutes etc. Only problem with this set-up is if you intend to go to large events they often have time limits that you can hold the pin to keep the flying moving. So, say your primary flight controls are on channel 20 and your aux "stuff" is on channel 21, you go up to the impound and ask for channels 20 and 21 and they give you 20 and say 21 is out and your 3rd in line for it. Well sure as *&^% as soon as you get channel 21 the announcements start "Person holding channel 20, your over your time limit and we need the pin back now".

Stick Jammer

As mentioned, it can be done with two separate frequencies. On the other hand, you should have no problem setting everything up on a single 9 or 10 channel Tx. Most of those extra functions can be assigned to switches. Landing lights can be setup to come on with gear down. I also don't think having someone else operate the flaps would be the best idea. Good luck in whatever you decide.

bigchap

i am worried about workload for the pilot,so i think this is the best way to go seeing as i am going to be putting a lot of money into this project.

smokingcrater

don't quote me on this, but you could probably use ground frequencies for the aux functions. technically the air frequencies specify directional control of a model... this would save you the trouble of having to get another freq pin if the need should ever arise.

another solution would be to get a 9c or 9z series, then set it so the trainer function is on a non-spring toggle switch, and only assign the aux channels to the trainer box, with the main flight controls remaining with the main tx.

bigchap

that sounds like the way i will go,i was thinking about using a trainer lead but then i remembered that the switch returns,i didn't even think about using a normal toggle switch,it's funny how you never think of the easy way to solve a problem and then someone comes along and it all seems so simple after that,but i guess thats what rcu is for,many thanks.

jbflier

I don't think the distance output from a ground Tx (27mhz) is much more than an 1/8 of a mile or less. I'd go with 2 seperate radio sets on different frequencies..........

smokingcrater

doesn't have to be 27mhz, how about a module radio on 75 mhz...

pettit

My Feedback: (23)

Both transmitters still control functions on a flying airplane, so both MUST be on 72 MHZ.

sillyness

My Feedback: (25)

I'm not too familiar with selectable trainer functions... I haven't been in the trainer menus in a long time. In my old 8103, you could only assign primary controls to the trainee... not ancilliary functions. I'm sure your radio is much better than that... it sounds liek your best option if you can do it.

If you have 2 TX's, as stated you will have to be an different freq's as mentioned since the radios are ALWAYS transmitting ALL X channels, even if "disabled" (with limited exception in the Royal Evo... but it still doesn't make it usable).

On different freq's you will want to give consideration to standing some distance apart. I believe 20 feet is recommended. The 2 radios and signals will mix and generate side lobe signals on different freq's. If you are on 35 and 33, you will generate signals on 31 and 37 IF you are too close together. Additionally, the radios MAY (not too likely) interfere with each other.

Food for thought.

JohnVH

My Feedback: (38)

I could see having another TX to do stuff like bomb drop or some odd features, But flying the airplane, and running flaps, retracts, brakes, ect.. is very easy to do all from one TX. I dont think this is much load at all...02

bigchap

i am probably underestimating the guy who is going to be doing the flying but i just wanted to make his life easier,and my investment safer!

JohnVH

My Feedback: (38)

I understand, there are alot of jet guys with over $10,000+++ in the air running the whole machine on thier own, FWIW.

canavanbob

My Feedback: (20)

I think the Royal Evo could easily do what you want on one frequency. The radio out of the box does not control anything, including primary flight functions. You have to enable everything to make it work.