MultiPlex Royal Evo 12 tx ?
 

Does anyone use or plan on using the Royal Evo Digital MultiPlex 12ch synthesized radio with their Jets? Have they been released yet here in the US? Everywhere I check has them listed as "out of stock".
Does anyone know if they are any good?

Thanks,
Steven T.

RE: MultiPlex Royal Evo 12 tx ?
 

I use a 12 in all my jets now cured all my problems great radio.
I did have some problems programing it but once the asian radio concept is forgotten all became clear, go for it!

M

RE: MultiPlex Royal Evo 12 tx ?
 

My Royal Evo 12-synth arrived from Tower 3 days ago. I intend to use it on all my jets.

I have been a faithful Futaba operator/owner for 20 yrs and needed to upgrade from my 8UAF to a radio with more channels and fail safe capability. I spent the better part of 5 months researching all the Radio options available and the Multiplex Royal EVO won hands down....12 channels with fail safe capability, programming versatility that the Asian radios dream about, and the best part....1/2 the price of the Futaba 9Z-synth!

Just put the radio on back order with Tower and it will arrive in about a month. Well worth the wait. I got my RE-12S TX for $499.99 shipped to my door. I am still waiting for the Rx to show up.

Regards,


Peter

RE: MultiPlex Royal Evo 12 tx ?
 

I have flown the Evo12 in a Viper jet and had no problem with the radio itself (we had outside ch58 interference and the IPD did its job, no crashes!!). I like the 12 channels, but it forces you to use TWO ailerons ch and TWO flp ch which took 4 ch total. I called Hitec and they were not able to help but asked me to send my RX's back for check up. This is by no way a negative comment since the radio is new here in the US and it will take some time for expertise to develop. I will be using it on my few prop planes to get used to it.

The TX feels a little too plasticy and the switches feel too weak compared to the 10X or the 9Z that I have. It does have many great features and the Synth TX and scanner are great options. The 12 ch Rx has a built in daul batt inputs too.

Time will tell, But I think it has a lot of potential in my future planes.

RE: MultiPlex Royal Evo 12 tx ?
 

"I like the 12 channels, but it forces you to use TWO ailerons ch and TWO flp ch which took 4 ch total."
Ehab
Is this normal? Couldn't you use a Y-harness for the ailerons and one for the Flaps setting the servos in reverse positions in the wings like I do with my JR radio if I don't want to tie up other channels?
After reading the specs. on the web site. It seems the radio can be used with any rx? Does this radio work like the Hitec eclipse tx that can be set to any channel matching the rx? Or does this only work went you're using the Royal Evo rx?

Thanks for all the help..

Steven T.

RE: MultiPlex Royal Evo 12 tx ?
 

I have my 12 ch Royal Evo now with synthesizer and it is great. I have not had much time to fly lately (work), so I have little experience with it yet. As for using it with any receiver, not yet. It will soon be able to be used with any PPM receiver as soon as the shift select portion of the software is activated. That should happen in two or three months. As for now, you can only use with PPM RXs that are the same shift as JR. But for a high dollar jet, I would only use the MPX IPD receivers anyway. I have used them for three years now and they have been rock solid.

Ehab, why do you say !QUOT!it forces you to use TWO ailerons ch and TWO flp ch which took 4 ch total!QUOT!??? If you want, you should be able to use a Y on those channels. But I usually hook them direct and use separate channels so I can program crow if you want.

RE: MultiPlex Royal Evo 12 tx ?
 

Yes, I tried the Evo 12 TX with a JR PPM RX and it worked fine. I even turned on my 10X on the same freq while the Evo was driving the JR RX, and the Evo 12 overpowered the 10X Tx which was 6" away from the Evo Tx!!!!!

I DID try a Y harness, but The moment I plugged the 2nd servo in the Y both servos stopped working all together. Hitec had the same problem and they said they traced down to Li PO batteries!! BUT I was using 5 cell Nicads???

At this time, Hitec knowledge of the capabilies of the Evo 12 seem to be growing fast and I hope they can answer our questions soon.

Again, I think we are going thru a learning curve here and I hope to see all these issues resolved since I like the radio a lot. It even learns the capacity of its Tx battery and stores it in memroy.

RE: MultiPlex Royal Evo 12 tx ?
 

I have also been looking for a new radio to fly my jets with. I currently have the 9Z radio and need more channels. I have looked at the royal evo and found that the one thing that I do not like about it is that the sliders on the side look like they are rods that slide back and forth on side of the radio, can someone verify or clear up my thinking on this. If anyone has a picture of what their sliders look like it would be greatly appreciated. Also are the receivers syntesized as well? I love this feature on the futaba.

Thanks

Patrick.

RE: MultiPlex Royal Evo 12 tx ?
 

Actually, the Evo12 has NO sliders on the side. They are three position switches. It has TWO sliders on the face below the sticks. I did not like having no break slider on the side either, But I set the side switch to half break and full break and it worked well indeed.

RE: MultiPlex Royal Evo 12 tx ?
 

Ehab, what servos did you try to put on the Y? Do you remember? Thanks.

RE: MultiPlex Royal Evo 12 tx ?
 

That is not an issue of the Royal Evo Tx. It is a problem of compatibility between the battery, Rx and servos, it has nothing at all to do with the Tx. There was a report a long time ago of Hitec digital servos not working when Y leaded with an IPD Rx because they dragged the signal voltage below threshhold for Hitec digis.

H

RE: MultiPlex Royal Evo 12 tx ?
 

Hi Harry:

I know it is not a Tx issue. I had this situation with an IPD 12 ch and JR servos or Hitec servos running on 5 cell nicads.

RE: MultiPlex Royal Evo 12 tx ?
 

Hi Harry,
This is weird because I have had up to 4 Mpx digitals on 1 IPD rx output without difficulties. This also has been on 5 cell Nicads, and since the Rx servo power is supplied by common bus rails in the Rx, I would suspect the quality (resistance) of the Y lead. One point though, the plugs were the old Mpx style plugs.
Regards,

John.

RE: MultiPlex Royal Evo 12 tx ?
 

John,

the reported problem was specific to Hitec digitals on a Y lead. Upon investigation it was found that alone amongst manufacturers, Mpx fit a resistor in series to the data output of every channel, between the i/c and the servo sockets. At the time, those who know about such things said it was the correct engineering thing to do, in order to protect the i/c outputs, but that other brands don't to save cost. I don't understand what the resistor does to protect the i/c. Anyway, a result of the resistor is to reduce the data voltage lower than other brands. When digitals with their added current draw were Y leaded onto one output it drags tha data voltage lower still on that output. The threshold voltage for the Hitec digitals was higher than normal and the result was the data voltage dropped below the Hitec threshold voltage for that output where two servos were on a Y lead. So even though it was still being fed a square wave PPM signal, the servo saw a constant off voltage rather than seeing the on/off voltage as it would not rise above the threshold. Other brands of servos were not getting the problem presumably because they have lower thresholds. If the i/c is not voltage controlled, then using 5 cells would overcome it I guess as the data out voltage would be well above threshold.

H

RE: MultiPlex Royal Evo 12 tx ?
 

Really pleased with my Evo 9, easily programmable, love the flexibility of the controls. Not yet used it in a jet (not finished). HOWEVER the standard charger only supplies 50mA, (30 hours charge time for Tx). Because of the in-line battery management system, the manual states that damage will occur if you charge the thro the Tx socket with chargers that can output @ higher than 9.6V. This means I can't use my field charger (Infinity 2). Here in the UK, I'm struggling for suppliers of things like plugs/sockets to enable me to charge batteries directly from my field charger. OR I need an appropriate mains charger which I don't think Multiplex supply (at least in the UK). Mind you, it looks like the Robbe Lader 5 charger will fit the bill.

Can any of you guys based in the UK advise of what you do? Who do you use for supply of assessories/spares?

Regards,
Ted

RE: MultiPlex Royal Evo 12 tx ?
 

with up to nine hours of transmitting time why would you need to charge at the field

M

RE: MultiPlex Royal Evo 12 tx ?
 

Mick,
didn't explain my situation very well. Whilst I don't particularly want to field charge Tx, neither do I want to charge for 24 hrs + with standard charger. There are other issues with the std charger I'm unhappy about, there's no LED confirmation that batteries are on charge, the unit has a euro mains plug fitting. Once I realised I was unhappy with the std charger setup, I thought "I'll use my field charger on the bench" but have not been able to for the reasons I've described.
It's also the case that I've not found it easy to buy accessories of any kind locally to me.

Regards,
Ted

RE: MultiPlex Royal Evo 12 tx ?
 

Ted, you can get Multiplex stuff from Punctilio of Leicester which isn't too far from you. See http://www.modelspot.com/mpx/chargers.htm I have the combilader (same as the Robbe unit, just a different badge), or they have a wall unit that does 150ma. The combilader is probably the best value as it can charge up to 5 items at once at varying currents, very handy for Tx and Rx.

RE: MultiPlex Royal Evo 12 tx ?
 

thanks Harry

Ted

RE: MultiPlex Royal Evo 12 tx ?
 

Harry,
Quite right re the high impedance Rx output. But I believed that the Technology in Hitec digitals was the same as Mpx digital V1 servos since it came from the same designer. I am talking here about the chip and the prgramming, not the engineering. No ali gearboxes in Mpx servos!
Anyway, guess that even if the design was similar, the component choice is down to individual manufacturers.
I am planning to try a couple of the new Hitec digitals with the Karbonite gearbox to see how they perform. I need the higher power for the canard and rudder on my eurosport than I can get with the Profi MC's. (At least thats what I have read, not sure I believe it though. Eurosports are not that quick.
Regards,

John.

RE: MultiPlex Royal Evo 12 tx ?
 

John,

a friend of mine bought a Hitec karbonite servo a couple of weeks ago and took it apart to look at the gears, from curiosity. What he found was that most of the gears are ordinary nylon and one or two were karbonite. The box says "karbonite gear train". He complained to Amerang, the UK Hitec importer, got it refunded and an acceptance from Amerang that the "karbonite gear train" is misleading and should be changed.

You are very brave putting Hitec servos in your jet. I wouldn't use them for ballast in a free flight model! 8 weeks ago, much against my better judgement and experience of a friend's consistently faulty Hitecs, I got persuaded by several people in a shop that they have used huge numbers of Hitecs and not had one problem, so I bought 4 hitec digitals. Straight out of the box 2 of the 4 were faulty. I also noticed that 3 had old date labels and confirmed that these were the servos with a software fault at max travel values. I sent them to Amerang to upgrade. Got them back with a note saying "re-programmed and tested". One of the 3 was faulty immediately on switching on the radio. All four are now on their way to a landfill site.

H

RE: MultiPlex Royal Evo 12 tx ?
 

LOL!

RE: MultiPlex Royal Evo 12 tx ?
 

Well, either I throw them in a landfill site, or they will use my model to excavate a landfill site for them, and I am not having that.

H

RE: MultiPlex Royal Evo 12 tx ?
 

Harry,
hmmm! You've got me reconsidering now. Then again I have a friend who flies jets for Wren Turbines and he uses Hitec digitals all of the time. I just put a pair in an electric glider (nearly as expensive as a jet) and they are doing ok.
As you know normally I stick with Mpx for the whole system as this has never let me down in, now ,18 years. However, if the figures quoted for torque requirements are be believed, (a big if IMO) then I need some standard size servos with about 8-9kgs pull. Mpx currently don't have such a thing in their range, but the new Titan servos are Hitec built for Mpx rather than just badge engineered examples.
I guess I could put a pair of Profi V2's on the canard and fine tune program them, but the rudder is the issue. The recommendation is for JR 8411's. good servos but they won't live with 6volts which is what I use. What does that leave? Futaba; heaven forbid!
Or Volz perhaps, but I have heard some bad reports of these too.
What is a boy to do?
regards,

John.

RE: MultiPlex Royal Evo 12 tx ?
 

I will be using a JR8411 on 6 volts ish on my Sabre. I say "ish" because using the twin battery inputs on the IPD12 will knock nearly a volt off, leaving it nearer to 5V. Just in case, I asked danny snyder in the JR forum and he said that the 8411 is ok on 6volts. http://www.rcuniverse.com/forum/m_13...tm.htm#1363467

H