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HomeRC & Power✈️Aircraft🚁HelicopterFlybarless Rotor Head SystemsFutaba CGY › All you need to know about CGY750 1.3x update and setup from Nick
04-05-2013 06:45 AM  6 years ago
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3dgimble

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Rochester

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All you need to know about CGY750 1.3x update and setup from Nick
All you need to know how to update and setup the CGY750 1.3x from Nick Maxwell;

Watch at YouTube

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04-05-2013 10:04 AM  6 years ago
hootowl

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Garnet Valley, Pa.

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I did the update. Only takes few minutes.. easy and no issues.

This video is awesome for getting in deeper. Thanks Nick!
Wolves don't lose sleep over the opinions of sheep
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04-06-2013 02:56 AM  6 years ago
knightofcarnage

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chicago

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Very nice tips, Two things i did not know where possible in cgy750 setup.
1) after you pick the your best fitting servo combo, I use to revers the ch on the radio to make corrections. But Nick points out you just make the associate rate negative in the cgy750. I like Nicks approach better because its similar to Fly bar setups in H3 mode.

2) I did not know you where able to limit your max pitch using swash ring on cgy750. I used to the same thing FB model inside my TX. Also is better to use the built in swash ring in cgy750 or can i use the radios so i can adjust remotely.

Nick hope part two comes out soon Thanks for a great video.
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04-06-2013 03:05 AM  6 years ago
dchekas

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Farmington, CT

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Very well done, looking particularly forward to the next part.Team Align, Team Futaba, Team Byron Fuels, Team Thunder Power
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04-06-2013 12:46 PM  6 years ago
Dr.Ben

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Richmond, VA, USA

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Use the 750's swash ring because it applies the limits to the throw differently than the transmitter based one would. Generally speaking, functions like the swash ring and FF mixing are in the 750 because their transmitter based counterparts would not work correctly in this gyro based application.

Be careful about reducing the swash ring any lower than that required to avoid the bind because doing somcan dramatically reduce avaiable cyclic rate. Fortunately the swash rarely moves in flight as much as it does for static set up as has been shown in numerous in flight videos of swashplate travel, so in flight bind is not a tremendous concern. Still, be cautious with those models with suboptimum control geometries that starting binding early in the overall percentage of control travel.

Ben Minor
Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA
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04-16-2013 02:36 AM  6 years ago
plantone

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Perth wa

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Awesome video Nick, many thanks.

I have set up my Kasama srimok e this way and got a test flight on it yesterday i moved from flight mode 4 to 3 as i want to try using this model if possible for FAI. what i have noticed is the model overall flies better and is more predictable and really lock in during the aeros but can you suggest some changes that would possible help lock in the hover as the srimok seems to wonder laterally not vertically. I know the srimok is not a hovering fai style machine but am hoping to be able to tweak it a bit. The cgy 750 with the same setting in the Rave env hovers great so i know its a geometry thing. What do i need to look for to get a better hover.

Many thanks

Wayne

Dr Ben

I noticed you mentioned about blade weight in another post i am using SAB 220 gram fai blades would you think these are too heavy for the cgy750 to respond to quickly and would you reckomend using a lighter flybarless blade as to a fai blade. ??
Mongoose
Srimok FAI
SAB Goblin
ENV Rave Next D 450
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04-16-2013 04:54 PM  6 years ago
Dr.Ben

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Richmond, VA, USA

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In my testing experience, those blades will not work very well with a 750. The problem is that the new firmware attempts to tightly control flip and roll rate not only in the context of avoiding too much of either but also it will try to do everything it can to deliver the programmed angular rate. When you run heavy blades, the system uses all of the available static travel you programmed into the system trying to deliver commanded rate. The blades get very noisy and the whole head kinda bogs down with as much as 10D of cyclic in there on top of whatever collective is being used. The heavy blades also slow the ability of the head to respond to directions being fed it by the gyros.

I would try to keep blade weight to no more than about 200g for 700 class models. I am watching with interest to see how the F3C community settles on blade design for contest work. You need decent tip weight for good autos, but I do not think the classic FB FAI blade is going to be perfectly suited for FBL F3C.

Ben Minor
Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA
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04-18-2013 04:32 PM  6 years ago
Skaluf

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Champaign, IL

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Here is a link to Part 2 of our new CGY750 video series. This part will take you through the flight tuning of the unit. This video, once again features Nick Maxwell as your instructor.

The YouTube link is:

Watch at YouTube

You may also view and download [B]both parts here:

http://www.futabarc.com/gyros/futm0835.html

Enjoy!
Steve Kaluf
Hobbico
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04-18-2013 08:03 PM  6 years ago
rtnaviman

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Ashburn, Va USA

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Thanks for this great info Steve, been waiting for this one .
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