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HomeRC & PowerAircraftHelicopterRadio - Futaba FASST › 7c, CGY750 help.
07-20-2018 03:52 AM  4 months agoPost 1
ezzywave

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Wash.

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OK, got a 7c transmitter from a fellow Runrider member. I have downloaded, read and understand (well, most of) the manual for it. I have downloaded and read the v.2.0 CGY750 manual, but I can't find a v.1.3 manual. I see that some of the menus are different.

I watched numerous youtube cyg750 setup videos till my eyes crossed. Got a headache. Time for action.

First I disconnected the servo arms, then easily linked the tx to my R6203sb reciever. I got the flipping heli on the cgy750. The servos rotated a couple degrees each. The ESC beeped for 30 seconds. The transmitter moves all the servos corectly. Yea. Not in the correct direction, but at least they move. Back to the 7c and cgy instructions, then more youtube. Got conflicting info. Headache intensified.

Then I noticed that the servos are NOT in fact moving correctly. After moving any of the swashplate servos and returning the stick to neutral, the offending servo(s) does not return to the original position.

Please help, I'm running low on aspirin...

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07-20-2018 04:34 AM  4 months agoPost 2
Dr.Ben

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Richmond, VA, USA

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If the gyro is in AVCS (heading hold) mode, the servo(s) will not immediately return to center when an input is released.
With that radio, you'll set your gyro gains in the gyro using "base gain" and with the gyro set to AVCS instead of CMT mode.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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07-20-2018 02:08 PM  4 months agoPost 3
Phat513

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Middletown Ohio

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Same here watching many video go though the manual many time still not to setup a CGY750 correctly.

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07-21-2018 02:02 PM  4 months agoPost 4
wjvail

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Meridian, Mississippi

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ezzy... I love your tenacity.

There must be someone near you that can help. Even if you land on a suitable setup for your current equipment, I really think you need to have Firmware version 2.0 installed. If your 750 has 1.3 installed, you are several version behind. Moving from 1.4 to 2.0 was a massive improvement in both flight performance and ease of setup. I would be more than happy to update your unit but there must be a better solution than mailing your controller back and forth for 30 seconds of work. Your location says "Wash". Washington state or DC? Another option would be to send it to FutabaUSA for updating.
Phat513
Same here watching many video go though the manual many time still not to setup a CGY750 correctly.
How is it not set up correctly. How far into the setup process have you gotten. Are you to the point of flying the model but not happy with the performance?

"Well, nothing bad can happen now."

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07-23-2018 04:15 PM  4 months agoPost 5
ezzywave

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Wash.

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I am in Wash. state. It is possible that a local rc shop will update the cgy for me. In the meantime here is what I have tried to do.

Center the swashplate servos at midpoint left stick. Except I can't figure out how to do this!!! I find conflicting methods as to using the tx or the cgy. Same with getting the servos to move in the correct direction. TX or cgy??? Can someone talk me thru this? Or do you guys know of a reliable guide I can use? Does updating to v2.0 make this any easier/clearer?

Or, based on the above questions, am I a hopeless case and should sell it and buy a $50 RTF drone...

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07-23-2018 04:44 PM  4 months agoPost 6
RM3

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Killeen, Texas - USA

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Set your Heli up without the CGY750. dont even hook it up to the helicopter... Once you get your 7C setup and working with the Heli with all the servos connected to the RX to get all the linkages set properly, servos centered and moving in the right direction, THEN add the GCY750 and change the TX/CGY750 settings accordingly.
Trying to setup the TX and the CGY at the same time is doing nothing but having you chase your tail.

showing a preference will only get you into trouble, 90% of everything is crap...

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07-23-2018 04:48 PM  4 months agoPost 7
Dr.Ben

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Richmond, VA, USA

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That idea works to a point except that the transmitter has to be in H1 mode and thus the servos won't move correctly until the 750 adds the ccpm mixing.

V2.0 does further simplify set up.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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07-23-2018 04:55 PM  4 months agoPost 8
ezzywave

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Wash.

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RM3- How would I do that? My receiver has a SBUS out. What would I connect it to?

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07-23-2018 04:58 PM  4 months agoPost 9
ezzywave

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Wash.

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Dr.Ben- when I put the tx in H1 the left swashplate servo does not move all with the right stick, but it will move with the left stick.

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07-23-2018 05:52 PM  4 months agoPost 10
RM3

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Killeen, Texas - USA

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Ben,
yes, but at least it will get im going in the right direction... you cant setup a CGY750 if you cant get the TX setup first.

for the purpose of setting up your Tx first do you have a non SBus RX? one with discrete servo plug outputs for each? If you do use it. THEN after you've set up the TX, link it to the SBUS rx and go from there. That way you can determine where servos leads get plugged in into the CGY
Setting up a CGY is all about baby steps.
If all you have is a Sbus RX. and you dont have an understanding of how to set up a 7C tx... its going to be a situation of bouncing between setting up the TX and the RX which is going to make for a very frustrating week.

edit:
Wait a minute... doesnt the CGY750 need a 8 channel minimum?

showing a preference will only get you into trouble, 90% of everything is crap...

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07-23-2018 06:13 PM  4 months agoPost 11
Dr.Ben

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Richmond, VA, USA

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No.
AIL,ELE,THR,RUD,PIT,RUD GAIN. Cyclic gyro gain can be handled by the 750 internally using base gain.

The only transmitter set up is to put the radio into H1 mode.

Confirm the channel order in the transmitter is AIL, ELE, THR, PIT for the basic controls. Go into the SBUS basic menu and confirm the SBus channels which correspond to those controls match up. So when the SBus menu in the 750 says AIL, that should be set for 1 since it's the first channel from the transmitter (and so forth for the rest).

At this point confirm all the servos at least move with collective input. We'll then use the SWASH type to get things moving correctly. We might have to change servo directions too, but first tell me what the servos are doing and play with the swash type (in SWASHSET BASIC) and find which of the choices gets things closest to correct.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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07-23-2018 06:23 PM  4 months agoPost 12
ezzywave

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Wash.

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I will attempt the above instructions when I get home from work.

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07-23-2018 06:38 PM  4 months agoPost 13
RM3

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Killeen, Texas - USA

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I thought the 7C was incompatable... you said this in another post???
Dr.Ben
I need to revise my earlier comnents. SBus does indeed have nothing to do with the transmitter per se, but the reveivers listed require FASST MULTI in the transmitter as an option which the 7C does not support. I'm double checking, but right now I'm not seeing and SBus receiver to which that transmitter will link.

Ben Minor

showing a preference will only get you into trouble, 90% of everything is crap...

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07-23-2018 09:22 PM  4 months agoPost 14
Dr.Ben

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Richmond, VA, USA

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I was partially mistaken. My thought process when I wrote that was based on the 7C not doing FASST multi. The 7C is published as being compatible with the 620xx receivers, and he got a successful link (solid green). It is not compatible with all FASST receivers.

Can we please confirm which receiver is being used here? I'm not seeing it specified in this thread. It matters with the 7C.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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07-24-2018 03:33 AM  4 months agoPost 15
ezzywave

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Wash.

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receiver Futaba R6203sb FASST

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07-24-2018 03:56 AM  4 months agoPost 16
Dr.Ben

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Richmond, VA, USA

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All good there.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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07-24-2018 03:57 AM  4 months agoPost 17
ezzywave

rrNovice

Wash.

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7c --------- cgy750

ch1 aile --------- ail
ch2 elev --------- ele
ch3 thro --------- thr
ch4 rudd --------- rud
ch5 gyro --------- rgn
ch6 pitc --------- pit
ch7 aux1 --------- rpm

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07-24-2018 04:17 AM  4 months agoPost 18
Dr.Ben

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Richmond, VA, USA

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All good there too. Go through the swash choices and choose the one that works best.

Then tell me what it's doing.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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07-24-2018 04:23 AM  4 months agoPost 19
ezzywave

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Wash.

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I assume u mean ServoDirComb 1 thru 8?

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07-24-2018 02:22 PM  4 months agoPost 20
ezzywave

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Wash.

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I spent most of the evening helping my son swap engines in his truck.

But I found that under the SWASHsetBasic menu the swashtype was set to H4. I set it to H3-120 and now all 3 servos move. I did not have time to play with the ServoDirComb to get them moving correctly.

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HomeRC & PowerAircraftHelicopterRadio - Futaba FASST › 7c, CGY750 help.
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