RunRyder RC
 10  Topic Subscribe
WATCH
 2 pages [ <<    <    ( 1 )     2     NEXT    >> ] 1642 views POST REPLY
HomeAircraftHelicopterFlybarless Rotor Head SystemsFutaba CGY › Futaba 750 question
08-07-2012 05:19 PM  5 years agoPost 1
FenderBean

rrElite Veteran

Fort Hood TX

My Posts: All  Forum  Topic

Hey guys/gals I am getting one of these but a friend keeps trying to talk me out of it. I have been reviewing the popular setup videos and I was just wondering if its going to be one of those things that you spend waay to much time trying to get it perfect and never really gets there. Thanks

PM  EMAIL  HOMEPAGE  Attn:RR  Quote
08-07-2012 07:53 PM  5 years agoPost 2
Big Edge

rrApprentice

Oldsmar, FL USA

My Posts: All  Forum  Topic

I spent quite a bit of time getting my cgy750 flying right on my Trex 550e.. was all due to pilot error.

A proper trim flight in Normal/Rate gyro mode resolved my drifting issue.

My 750s are working great now. Have the second one in an RC Aerodyne AH-1 Cobra (trex 500 mechs)

Definitely a tweakers FBL unit.

-----------------------------
Don't taze me bro...

PM  EMAIL  Attn:RR  Quote
08-07-2012 09:02 PM  5 years agoPost 3
kcordell

rrElite Veteran

O Fallon, MO

My Posts: All  Forum  Topic

Biggest issue, READ THE INSTRUCTIONS! I know most of us don't, but this solves many issues that you may come up with. Proper mechanical setup and rate mode trim flight are keys to making the CGY-750 work great.

Team Futaba, Team Synergy/Rail, Team Scorpion, Team Castle Creations, YS Engines, VelTye

PM  EMAIL  Attn:RR  Quote
08-07-2012 10:33 PM  5 years agoPost 4
rexxigpilot

rrProfessor

Florida

My Posts: All  Forum  Topic

CGY750 is a good choice for FBL system. Best nitro governor there is and it is extremely vibration tolerant.

PM  EMAIL  Attn:RR  Quote
08-08-2012 08:15 AM  5 years agoPost 5
dkpodder

rrNovice

Vinderup, DK

My Posts: All  Forum  Topic

To answer your question, at the current v1.2 firmware: Yes, thats the situation for me, and the heli is sitting on the shelf waiting for next firmware update...

PM  EMAIL  Attn:RR  Quote
08-08-2012 10:47 AM  5 years agoPost 6
Knud Pedersen

rrKey Veteran

Denmark - Europe

My Posts: All  Forum  Topic

Futaba 750 question
Hey guys/gals I am getting one of these but a friend keeps trying to talk me out of it. I have been reviewing the popular setup videos and I was just wondering if its going to be one of those things that you spend waay to much time trying to get it perfect and never really gets there. Thanks
well, i use it on my Fury 55 (with 8717@Life),
Firmware 1.2.Flightmode 5.

I have tweeked it the first 10-12 flights.
Now it flies great - But everything can get better.

BTW:
regarding the firmware 1.2 i´ve done the thing written in the first post at the bottom.
see the first post https://rc.runryder.com/t672354p1/
Or see
https://rc.runryder.com/t697574p1/
http://www.futaba-rc.com/team/team-tips.html

This is basically what i have changend:
- Get the afr in the sweetspot (50-60%)

- Lower the Ail D-gain to <50 (maybe to zero)

- ail/ele i-gain <40 (mine is about 35%)

- no more ELE I-gain as required to keep track off the nose in FFF.

- Reduce ele Stopdelay if it bounce after ele stops.

- Choose Headresponse so that you use <500Mha per flight
Headresponse 1 is fast, 5 is slower.
Understand Headresponse as datastream to the servo, if the data comes too fast, they will get hot.
If you choose a too high (ex 5) Headresponse, the heli get inconsistence.

Edit:
Change the sign for Ail/ele Igain
Add some info for headresponse

ChopperKnud
Team Miniature Aircraft
ThePitchbrothers

PM  EMAIL  Attn:RR  Quote
08-08-2012 01:26 PM  5 years agoPost 7
Dr.Ben

rrMaster

Richmond, VA, USA

My Posts: All  Forum  Topic

I gain </= 40% .

I gain on ele no higher than needed to keep the nose from wandering, esp in FFF.

Control OUT delays on ele (two side adjustment) set to at least 10 for bounce control. Stop delay typically does not help a great deal, but you can play with it.

The rest as posted.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

PM  EMAIL  Attn:RR  Quote
08-08-2012 02:34 PM  5 years agoPost 8
Knud Pedersen

rrKey Veteran

Denmark - Europe

My Posts: All  Forum  Topic

Control OUT delays on ele (two side adjustment) set to at least 10 for bounce control. Stop delay typically does not help a great deal, but you can play with it.
mmhh. now i am not sure if i have changend the Stopdelay or ControlOutDelay.....i will check when i get home.And then try OUT delay if havent done it yet.

ChopperKnud
Team Miniature Aircraft
ThePitchbrothers

PM  EMAIL  Attn:RR  Quote
08-08-2012 02:39 PM  5 years agoPost 9
unclejane

rrElite Veteran

santa fe, NM, USA

My Posts: All  Forum  Topic

I'd personally suggest the Vbar silverline instead if you don't want your heli career to become fiddling with a 750 trying to get it to do what it's supposed to do (note the blizzard of settings already being posted in this thread and you haven't even bought it yet - that should give you an idea of what you'll be looking at...).

$300+ is a lot of money, so you want to spend it on something that works correctly and out of the box for your investment. Now that the Vbar has similar sensor technology, there's not too much point in the 750 (at least until they fix their firmware). I have 2 CGY's for sale if you still want to try it, but I'd strongly recommend avoiding it from the get-go and go with a properly working unit.

The Beast is another good alternative, but of course it lacks a governor. So that's kind of what points to the Vbar...

LS

PM  EMAIL  Attn:RR  Quote
08-08-2012 03:45 PM  5 years agoPost 10
rexxigpilot

rrProfessor

Florida

My Posts: All  Forum  Topic

I'd personally suggest the Vbar silverline instead if you don't want your heli career to become fiddling with a 750 trying to get it to do what it's supposed to do (note the blizzard of settings already being posted in this thread and you haven't even bought it yet - that should give you an idea of what you'll be looking at...).
$300+ is a lot of money, so you want to spend it on something that works correctly and out of the box for your investment. Now that the Vbar has similar sensor technology, there's not too much point in the 750 (at least until they fix their firmware). I have 2 CGY's for sale if you still want to try it, but I'd strongly recommend avoiding it from the get-go and go with a properly working unit.
On the other hand, I had to adjust only one setting (I gain) to make my CGY750 fly perfectly. The governor in the 750 works much better than even the V-Bar with nitro. V-Bar gov can't be used in 2 channel gov mode (like a standard governor) for normal flight mode without excessive ramp up once the throttle output reaches 50%. Most will use throttle curves for normal to eliminate this anomaly.

We all know unclejane had difficulty getting the CGY750 to work properly. He is also extremely vocal and over the top in his dislike of the CGY750. However, too many of us are using the CGY750 successfully for it to have the firmware or hardware issues that unclejane suggests.

The V-Bar is a good unit for sure. However, it's user adjustable features have been reduced since firmware release 4.0 to simplify setup for most users. You do lose some flexibility because of this. Not that it is necessary, but if you like the ability to tweak every little parameter in a program/firmware, the CGY750 allows you to do this.

PM  EMAIL  Attn:RR  Quote
08-08-2012 03:48 PM  5 years agoPost 11
adamsz06

rrVeteran

Geilenkirchen Germany

My Posts: All  Forum  Topic

I guess if you don't mind paying for firmware updates you should by all means purchase a Vbar...

R.I.P. Roman

PM  EMAIL  Attn:RR  Quote
08-08-2012 03:55 PM  5 years agoPost 12
bkervaski

rrElite Veteran

Birmingham, AL, USA

My Posts: All  Forum  Topic

I guess if you don't mind paying for firmware updates you should by all means purchase a Vbar...
I've never paid for a VBar firmware update, they are free ... maybe you're referring to the Pro version of the software which isn't needed for most folks but definitely worth it if you like to tweak.

I agree with unclejane, until Futaba *greatly* simplifies their software it's not a great choice for most despite it's awesome hardware package.

I gave up my CGY750 's not because they didn't fly well, they did, but only because I took a substantial amount of time researching, learning, tweaking, rinse, repeat, etc ... I gave up on the unit because I'm the only person at our field that could make it fly great and simply got sick of working on everybody else's ... so now I just tell folks to buy a VBar.

The CGY750 has advantages, better tail, better nitro governor, seems to be faster off center, but frankly the time (and frustration) saved by just buying a VBar shadows what you gain with the CGY750 .

If you like to spend a lot of time tweaking and tinkering then the CGY750 is definitely for you.

If you like to setup and go fly get a VBar.

Team Synergy Factory Specialist / Scorpion / Thunder Power / Byron's Fuels

PM  EMAIL  HOMEPAGE  Attn:RR  Quote
08-08-2012 04:22 PM  5 years agoPost 13
unclejane

rrElite Veteran

santa fe, NM, USA

My Posts: All  Forum  Topic

The V-Bar is a good unit for sure. However, it's user adjustable features have been reduced since firmware release 4.0 to simplify setup for most users.
That's _good_ design, not bad - a well designed piece of SW like that in the Vbar is _intentionally_ a) as simple as possible for the end user to use and b) lacking in extraneous implementation detail that the SW or hardware should be taking care of for you.

That's why Mikado has gone in that direction - they're good SW developers and they know that good software/firmware is always a compromise - a balance between excessive detail exposure and basic functionality.
You do lose some flexibility because of this. Not that it is necessary, but if you like the ability to tweak every little parameter in a program/firmware, the CGY750 allows you to do this.
As I said, that's the _problem_ with the 750, that's not a "feature" . It's UI and internally the firmware is bad design - you _have_ to "tweak every little parameter" because the unit itself doesn't know how to do this. Just read Dr. Ben's threads and you'll get an idea of what a 750 setup is like.

The other symptom of brokenness in the 750 FW is the need to go way outside the default settings to cure problems. No need to go into detail here, though some of it is already evident in this thread.

Again, if the potential investment weren't so large ($300+), this may be forgivable and I would finally shutup, but for that kind of money I gotta keep raising the red flags.... the alternatives are better when you get to those amounts of hard-earned scratch.

Kervaski is right about the governor and tail, tho. The 750 has the best governor in the business and the tail is very solid. It's just everything else that's the problem

LS

PM  EMAIL  Attn:RR  Quote
08-08-2012 05:12 PM  5 years agoPost 14
adamsz06

rrVeteran

Geilenkirchen Germany

My Posts: All  Forum  Topic

My god man...there is no " brokeness" with the 750. You're so over the top about your opinion of the product because it didn't work for you. Bottom line is these flybarless systems are like shoes; find one that fits your flying style and go with it. No big deal...no reason to bash another product at every opportunity. You claim the GUI is a design flaw...I claim it's perfect. It's divided into basic and expert...if you're not flying advanced 3d, you have no business tweaking the expert settings without an expert at your side. As said before, the unit works great for many others, including myself...it all comes down to preference which is an opinion.

R.I.P. Roman

PM  EMAIL  Attn:RR  Quote
08-08-2012 05:15 PM  5 years agoPost 15
adamsz06

rrVeteran

Geilenkirchen Germany

My Posts: All  Forum  Topic

Unclejane, I have nothing against you...I'm just tired of your relentless bashing of the 750. You can still wave your Vbar pom-poms, just please take off the skirt.

R.I.P. Roman

PM  EMAIL  Attn:RR  Quote
08-08-2012 05:24 PM  5 years agoPost 16
FenderBean

rrElite Veteran

Fort Hood TX

My Posts: All  Forum  Topic

well I 180 for a NIB 750 was a deal I wasnt going to pass up. I will give it a try and worse case I can always swap it. I have been with futaba for 20+ years and I am used to futabas programming. Plus I am switching over everything to SBus. Good info here so far

PM  EMAIL  HOMEPAGE  Attn:RR  Quote
08-08-2012 05:30 PM  5 years agoPost 17
Ronald Thomas

rrMaster

Gainesville, Fl, USA

My Posts: All  Forum  Topic

This is the thing. If you need an expert next to you to get the unit to fly correctly, then you probably don't need to use it especially when your buddy could not get it to work properly. I am admittedly a VBAR fan but to be objective about this, just look at the threads surrounding the 750, and then look at the threads surrounding the VBAR. Then take a look at the fixes.....do you want to adjust a slider or sift through a 70+ page manual to find the exact parameters to adjust and then go through trial and error?......Ron

Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!

PM  EMAIL  Attn:RR  Quote
08-08-2012 05:30 PM  5 years agoPost 18
adamsz06

rrVeteran

Geilenkirchen Germany

My Posts: All  Forum  Topic

Fender, what helicopter is it going on?

R.I.P. Roman

PM  EMAIL  Attn:RR  Quote
08-08-2012 05:31 PM  5 years agoPost 19
Ronald Thomas

rrMaster

Gainesville, Fl, USA

My Posts: All  Forum  Topic

Sbus is also available on the VBAR.....in fact it was available before the 750 was

Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!

PM  EMAIL  Attn:RR  Quote
08-08-2012 06:33 PM  5 years agoPost 20
Tommy Wagner

rrNovice

Florida

My Posts: All  Forum  Topic

CGY 750 works very well for me I think one of the main problem is that people right off the bat go in and adjust everything before they even fly it (including myself) when all i reall had to do was install it and fly it there was two of three items that needed to be changed (after i had given up and asked for some help from Bobby Watts) he reset everything changed igain and changed Dly mod to constant and it flys great.

Just my .02

PM  EMAIL  Attn:RR  Quote
WATCH
 2 pages [ <<    <    ( 1 )     2     NEXT    >> ] 1642 views POST REPLY
HomeAircraftHelicopterFlybarless Rotor Head SystemsFutaba CGY › Futaba 750 question
 Print TOPIC  Make Suggestion 

 10  Topic Subscribe

Monday, June 18 - 12:56 am - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online