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HomeRC & PowerAircraftHelicopterRadio - Futaba FASST › Futaba transmitter and CGY750 advice?
06-04-2018 09:49 PM  6 months agoPost 1
ezzywave

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Wash.

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I have a old Esky 450 and a Spektrum DX7 that I am familiar with. I found a flybarless T-rex 500 with a Futaba CGY750 that I thought I could bind to my DX7. Spektrum says that the Dx7 and the CGY750 are not compatable.

The T-rex 500 has a Futaba R6203sb receiver. I really don't want to spend $750 on a new transmitter. Which used transmitter should I be looking for? Would the Futaba 8J S-FHSS work?

Thanks.

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06-04-2018 10:02 PM  6 months agoPost 2
BrianApp

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Grand Rapids, MI

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If you want to stick with spectrum futaba makes this.-

https://www.towerhobbies.com/cgi-bin/wti0001p?&I=LXBDXZ

You don't need to spend near $700 to get a futaba TX that will work with the 750. The 7C works fine and used ones should be about $100. For a current radio the 8J will work as well with fhss.

If you go the used route make sure the 7C is 2.4. It was first made as a FM system.

The 7C binds fine with the 6203 and you won't need to remap any channels. The only thing you lose is remote gain setting for the head but you won't change it much if at all after setup.

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06-05-2018 01:49 AM  6 months agoPost 3
banshee rider

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Phoenix AZ.

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A Futaba 14sg will also work very well
and new there about $ 500 used I have seen them as low as $ 200

ageing is manditory maturity is optional

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06-05-2018 01:56 AM  6 months agoPost 4
Rojoalfa

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Punta de Mata, Monagas-Venezuela

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/
/

Very bad... It is not a good choice having spektrum and futaba stuff.
It is expensive to have both technologies as a beginner.

My advice... Get rid of that spektrum gadget and get a good transmitter... I mean, futaba.

Gy750 is a high gamma FBL equipment. To get full function from R6203sb, you need a high end futaba fasst transmitter.

Either way, get an orange spektrum receiver and sell the R6203sb.

I understand your point but you need to clarify your expectations...

Grow with futaba or grow with spektrum... Not both!

/

Saludos cordiales,

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06-05-2018 06:28 AM  6 months agoPost 5
BrianApp

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Grand Rapids, MI

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What are you talking about. The 750 works just fine with a basic, 7C or 8J, tx. You don't want both futaba and spectrum RXs and TXs but if you want this one 750 to work with what you have the $50 adapter, with a spectrum receiver, will get it going.

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06-05-2018 08:34 PM  6 months agoPost 6
ezzywave

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Wash.

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Thank you for the info about the adapter! I did a search and found a 3 part "How to" on youtube about how to set it up with the DX7.

I have a feeling I'll be back with more questions...

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07-05-2018 04:25 PM  5 months agoPost 7
ezzywave

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Wash.

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OK, I finally received and installed the Spektrum/Futaba adapter cable to my Spektrum ar6100(6 channel) receiver. I used the youtube videos by Ron Lund for reference for the connections, however, he uses a different reveiver, the ar7000(7 channel). I also used the downloaded CGY750 instructions, which I mostly(?) understand.

The CGY750 powers up and beeps several different tones for about a minute but never displays the rotating helicopter, like the instructions say it should. And none of the servos will move.

Any advice for me? Should I post this in a different section? Any help is greatly appreciated!

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07-05-2018 05:00 PM  5 months agoPost 8
Dr.Ben

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Richmond, VA, USA

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Can you take a little video with your phone and show me what it is doing?

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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07-05-2018 06:25 PM  5 months agoPost 9
ezzywave

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Wash.

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Yes! I can do that right after work.

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07-06-2018 04:55 PM  5 months agoPost 10
ezzywave

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Wash.

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Very frustrating. I didn't make a video, because now it won't do the beeping. The receiver goes solid red. The cyg750 just shows a number on top and Ver 1.3x(can't remember) under it. No spinning heli, no movement, no servos work.

I tested the receiver with a spare servo and it works normally.

Does the cyg750 need to see at least 7 channels coming into it?

Now that I think of it, I should have made a video so you could see how the receiver is wired.

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07-06-2018 05:11 PM  5 months agoPost 11
Dr.Ben

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Richmond, VA, USA

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I need pics and/or video.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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07-06-2018 11:31 PM  5 months agoPost 12
ezzywave

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Wash.

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07-07-2018 12:01 AM  5 months agoPost 13
Dr.Ben

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Richmond, VA, USA

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Show me a picture of the receiver and the converter and associated wiring.

Ben

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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07-07-2018 12:34 AM  5 months agoPost 14
wjvail

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Meridian, Mississippi

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ezzywave
Very frustrating. I didn't make a video, because now it won't do the beeping. The receiver goes solid red. The cyg750 just shows a number on top and Ver 1.3x(can't remember) under it. No spinning heli, no movement, no servos work.

I tested the receiver with a spare servo and it works normally.
It probably is not beeping (like it used to) because it appears you don't have the ESC/Motor connected. The "power up" tone is generated by the motor itself so if it is not receiving a signal from the ESC, there will be no tone.

As for why the 750 will not initialize, I know you said you tried using a servo plugged into the RX. That should verify the RX is "bound" to the TX. Still, it doesn't look like you are getting a valid signal from the RX to the 750. I'm unfamiliar with the receiver you are using but red is usually bad. Green means go. Red means stop. Can you re-verify that the transmitter and receiver are functioning properly without the added complexity of the S.Bus adapter and 750?

Another thought... I have a few non-Futaba receivers that have two modes for different servos. The two modes are digital and analog. A sequence of pushing a button on the RX and powering it on will switch modes. Possibly your receiver has similar settings. You might try switching modes and see if the SBE-1 responds.

What is the light on the SBE-1 doing?

My impression is that you're not getting a beep because there is no ESC/Motor connected and you're not getting a response from the 750 because your RX has lost bind.

"Well, nothing bad can happen now."

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07-07-2018 12:44 AM  5 months agoPost 15
ezzywave

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Wash.

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07-07-2018 12:45 AM  5 months agoPost 16
wjvail

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Meridian, Mississippi

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I'm still thinking out loud here but I wonder if you haven't at some point tried to power your flight pack "from two different directions". By that I mean, you apparently have a battery plugged into the receiver and typically you would plug your ESC into the "Throttle" slot on the 750. At that point you have the potential to power the flight pack from both the ESC's battery eliminator circuit (BEC) and the battery plugged into the RX.

"Well, nothing bad can happen now."

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07-07-2018 12:51 AM  5 months agoPost 17
Dr.Ben

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Richmond, VA, USA

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Tell me what the LED display on the SBE - 1 is doing? Blinking or steady light?

Ben

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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07-07-2018 01:01 AM  5 months agoPost 18
ezzywave

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Wash.

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The Spektrum receiver blinks red when it is trying to connect and goes solid when it is paired. There is no green. I used this receiver for many years on another heli.

I re-checked that a spare servo works, it does.

There is no light on the SBE-1. I see "LED" printed on it. Is it supposed to light up near there?

I will look in the Spektrum book for the servo mode idea.

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07-07-2018 01:04 AM  5 months agoPost 19
ezzywave

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Wash.

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Dr.Ben
Tell me what the LED display on the SBE - 1 is doing? Blinking or steady light?

Ben
No light at all. No display.

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07-07-2018 01:59 AM  5 months agoPost 20
wjvail

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Meridian, Mississippi

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ezzywave
No light at all. No display.
I apologize if I seem unfamiliar with your RX... While I do have a DX-8 and a few Bind-and-Fly hobby items, I'm out of my league with the finer points of Spektrum.

Furthermore, because I almost exclusively use Futaba transmitters, and when S.Bus is required, I use S.Bus receivers, I don't have any real world experience with the SBE-1. With that said, the SBE manual would suggest there should be an LED in the top right corner indicating 1., it's getting power and 2., that it is getting a valid signal. For those following along, see link to the manual below.

The fact that you don't have a a steady green LED on the SBE-1 is most likely why the 750 is not initializing.

Try removing the battery from the RX. Then, assuming the BEC on your ESC is functioning, plug it into the throttle slot on the 750. Remove the pinion from your motor and plug in your main battery. Does the LED on the Serial Bus Encoder-1 illuminate? Does the RX power up. Power should move from the ESC's BEC through the 750 and should power the SBE and RX.

http://manuals.hobbico.com/fut/sbe-1-manual.pdf

"Well, nothing bad can happen now."

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HomeRC & PowerAircraftHelicopterRadio - Futaba FASST › Futaba transmitter and CGY750 advice?
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