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HomeRC & PowerAircraftHelicopterRadio - Futaba FASST › Looking for some help with dual receiver setups
05-16-2011 03:24 AM  7 years agoPost 1
FenderBean

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Fort Hood TX

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Just looking for info, how does it work with the 14mz. Does it allow for two receivers to be binder and they both do the exact same thing, or is there a way to link the 14 channel receiver via a link cable?

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05-16-2011 04:43 AM  7 years agoPost 2
Phaedrus

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S. Orange County, California

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You can link an infinite number of receivers to a given transmitter. You can install all of them in a single aircraft or in as many as you choose.

You cannot connect the receivers together by anything other than a battery. But my question is why would you want to do this? With 14 channels available with the 14MZ what are you doing that you have run out of channels?

Installing dual receivers does not get you more channels, just more ports to plug servos into. If that is what you need I would simply use S-Bus.

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05-16-2011 06:19 AM  7 years agoPost 3
FenderBean

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Fort Hood TX

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Okay thats what I thought, I have used all 14 channels and could still used about 3 more, but my purpose in the info is for my Jet, by the time I finish I will prob have about 10k in it
I dont normally care but I dont want to worry about black outs or some issue with a bad receiver.

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05-16-2011 06:30 AM  7 years agoPost 4
Phaedrus

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S. Orange County, California

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Depending on what more functions you need you might consider using the MPDX-1. This assumes you are using a 14MZ. Otherwise dual RXs can get you enough plug ins, but not more channels. Others will argue this with me, but dual receivers are false security and the 2.4 FASST are proven to be extremely robust. You might want to seek out some of the jet forums on other boards to get more insight.

I am not a fan of dual receivers and never used them. Even on my 40% Extra (DA150) with 12 servos.

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05-17-2011 12:50 AM  7 years agoPost 5
FenderBean

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Fort Hood TX

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Yeah I have been the jet guys are hard to pull info from. I dont think i will run dual receivers unless i get something that lets you tie them together and monitors. Some of the power systems are nice. Thanks

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05-17-2011 04:39 AM  7 years agoPost 6
noahb

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Carlasbad, NM

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Fender, like was stated, you can use dual rx's if you want, but not to add additional channels. What I did with my f-15 when I had it was run the flaps and elevators on their own channels (4) I used a y for my ailerons, and a y for my rudders (yours is just one rudder so you will be fine there). I put the steering servo on a seperate control as this allows me to fine tune the steering on a seperate trim. This now leaves you with throttle, retract, brake.

You can also use the MPDX-1 or the JR Matchbox. Both work awesome and I have them in use in my 35% airplanes as well.

I always run my elevators and flaps on single channels as I can get them lined up at all throws much easier than the others. Ailerons are much easier to deal with.

Hope this helps. I am flying a DV8R at this time and it uses two flaps, two rudders, two ailerons, seperate steering, retract, brakes, throttle, and smoke.

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05-17-2011 07:19 AM  7 years agoPost 7
Phaedrus

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S. Orange County, California

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The JR Matchbox and the Futaba MPDX-1 are different things. The MPDX-1 actually adds channels that can be assigned a controlling switch, stick, etc.

The Matchbox is basically the JR version of the Futaba MSA-10, both which allow extra plug in locations.

Instead of a Y you can use the MSA-1 and set your centers and end points for each servo, and then plug the MSA-10 into the left aileron, or whatever. Takes a single RX port but can control 4 servos.

MSA-10
http://www3.towerhobbies.com/cgi-bi...?&I=LXCTS1&P=SM

MPDX-1
http://www3.towerhobbies.com/cgi-bi...?&I=LXLZH6&P=SM

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05-18-2011 03:42 AM  7 years agoPost 8
FenderBean

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Fort Hood TX

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channels are not the issue, I dont need more it was just having a back up receiver if one failed for some reason. Losing a 11k Jet is going to suck

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05-18-2011 04:49 AM  7 years agoPost 9
noahb

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Carlasbad, NM

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Well, I have seen where some use two rx's and split the elevators and ailerons (one for each rx).

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05-18-2011 06:33 AM  7 years agoPost 10
carcrasher

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east coast

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I have seen that also. In case one side loses signal or the battery craps out the plane can still be controlled and landed.

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05-19-2011 03:00 AM  7 years agoPost 11
FenderBean

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Fort Hood TX

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yeah this was kind of what i was thinking and just wondering how that works out?

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05-19-2011 04:46 AM  7 years agoPost 12
noahb

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Carlasbad, NM

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You won't know the diff. Some see it as a redundent system that might allow you enough control to get it back down with min. damage. However, I tend to think the less equipment you have in the jet, the less likely you will see a problem. Some guys run power expanders, etc. I run just one 14ch rx, one A123 cell plugged through a heavy duty switch into the rx.
My 35% Yak is the same except I run two A123 packs running through two switches into the rx. I believe in KISS method. Some believe in multiple redundent systems.

That's ok, however I see people defend that method and give all kinds of reasons why... many are valid. Then ask the question... "If you are so concerned with redundency, why are you running just one battery on your tx?". It boils down to what you feel comfortable with.

I know you are concerned about the expense of the jet and want to make sure everything is covered. My suggestion is this:
1. Put quality equipment in, rx's, servos, batts
2. Always balance charge your batts (this allows you to keep an eye on indivdual cells, and also allows you to keep track of how much mAh you are putting back in. For example, if on a normal day I fly three flights and I know when I charge back up I expect to see 600-800 mAh put back in, if that is way out of speck I know something is wrong.
3. Don't ever take a chance... if something is not right... fix it before flight.
4. Do a quality pre-flight on the jet as if you where going to be riding in it.

hope some of this helps. Keep in mind that this is just my opinion, others have valid opinions as well.

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05-19-2011 05:07 AM  7 years agoPost 13
Yeehaanow

rrApprentice

Vermont

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http://www.aerobertics.be/productDe...&cat=8&brand=21

Seems like a pretty high end system, but meant for PCM.
Will switch automatically between two receivers if failsafe is detected.

-Tim

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05-19-2011 05:09 AM  7 years agoPost 14
FenderBean

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Fort Hood TX

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yeah there stuff is great but really high priced

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05-21-2011 09:09 AM  7 years agoPost 15
fredd

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UK - London

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Just have a look at Powerbox systems and Emcotec. Both these firms are the best in providing solutions for dual receivers.

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05-21-2011 03:08 PM  7 years agoPost 16
Phaedrus

rrKey Veteran

S. Orange County, California

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Emcotec makes a really nice unit that allows two receivers to be connected to ALL the servos. It uses one as primary and one as back up. If it senses an issue with the primary it switches to the back up. That is true redundancy.

Honestly, I have seen as many planes lost as saved with dual receiver set ups. Trying to fly with half the plane is not as easy as one might think!!

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Go FASST, or Go Home!!
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05-21-2011 03:20 PM  7 years agoPost 17
VinceY

rrApprentice

Newnan GA

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Depends on the plane. I've flown a 40% Extra with half the surfaces and it was a lot easier than I thought it would be. I had dual receivers and batteries. I lost one battery, so I was down to one side. Luckily the side I had also controlled the throttle. If I had lost the side with throttle, I would have used the choke(other receiver) to kill the engine. That one incident keeps me using dual receivers on my big planks.

Team Synergy/ Rail Blades

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05-21-2011 05:57 PM  7 years agoPost 18
Richard

rrVeteran

Scottish Borders, U.K.

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Try this site for what you need. I am going to use the Powerbox SRS for my Vario Turbine.

http://www.powerbox-systems.com/e/start/start/start.php

Oh **** ! this is going to be expensive?

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05-21-2011 09:40 PM  7 years agoPost 19
Phaedrus

rrKey Veteran

S. Orange County, California

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Depends on the plane. I've flown a 40% Extra with half the surfaces and it was a lot easier than I thought it would be. I had dual receivers and batteries. I lost one battery, so I was down to one side.
It was not the dual receivers that saved you it was the dual batteries. If you were running a single RX with 2 packs in parallel when you lost the one pack you would still have had full control of all the servos.

If the side that dies is at anything except neutral you can have your hands full. I lost a servo on my 40% Extra. Locked the left aileron at about 50% throw. Trust me, it was no picnic to land.

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Go FASST, or Go Home!!
Team Futaba

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