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Scorpion Power Scorpion Power
HelicopterFlybarless Rotor Head SystemsOther › Futaba FBL unit due early 2011
02-17-2011 12:40 AM  6 years agoPost 241
thenewguy

rrElite Veteran

Corvallis, Oregon​Where there is​liquid sunshine!

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Thank you Dr. Ben,

I'm interested in seeing your results. I'm switching over to electric and have been doing a lot of research on what ESC's to buy. This is the one reason I asked about the governor feature of the GY750 on electrics.

Thanks,
Chris

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02-18-2011 05:28 AM  6 years agoPost 242
Dr.Ben

rrMaster

Richmond, VA, USA

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Sensor installation pics - one option

http://rc.runryder.com/helicopter/t630720p3/?p=5215973#RR

To avoid a duplicate post.......

Ben Minor

Team Synergy Team Futaba Team Kontronik USA
Progressive RC

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02-18-2011 06:26 AM  6 years agoPost 243
willie evans

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Alberta, Canada

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over one year old.

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02-18-2011 01:38 PM  6 years agoPost 244
Dr.Ben

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Richmond, VA, USA

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I know what I think based on how well it flies, but I'm going to answer definitively for you later today.

Ben Minor

Team Synergy Team Futaba Team Kontronik USA
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02-19-2011 08:01 AM  6 years agoPost 245
human213

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malibu

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As a guess

I would believe it must, at this time in the market
it would be non-competitive to be without it...

Waiting for Ben.

M

Not everything that can be counted counts, and not everything that counts can be counted.

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02-19-2011 02:22 PM  6 years agoPost 246
Dr.Ben

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Richmond, VA, USA

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I'm waiting for the reply from the product's designer. It's in there; I just want the correct details of how.

Ben Minor

Team Synergy Team Futaba Team Kontronik USA
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02-22-2011 05:44 AM  6 years agoPost 247
willie evans

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Alberta, Canada

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over one year old.

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02-22-2011 06:36 AM  6 years agoPost 248
HeliBenj

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Provence, France

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Why is this so important? It's not an indication of how well the system perfoms IMO. It's not if they talk but how they talk, ie the control loops that are important, and utimately how it flies.

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02-22-2011 06:38 AM  6 years agoPost 249
willie evans

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Alberta, Canada

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over one year old.

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02-22-2011 03:59 PM  6 years agoPost 250
HeliBenj

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Provence, France

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I've owned and flown 5 different systems and I can tell differences. What I mean is piro optimization and sensors interactions are pretty much main stream right now, like a car having ABS. still there are differences between ABS and their performance.
So the car having ABS doesn't make it a good car per se. Depends on the ABS.

My bet is there has to be piro optimization and ontrol loops interactions

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02-22-2011 06:02 PM  6 years agoPost 251
garyl

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taxachussetts

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Will this thing do head phasing for mulibladed heads? Is there a user manual to download anywhere?

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02-22-2011 06:08 PM  6 years agoPost 252
kcordell

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O Fallon, MO

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The manual for the CGY-750 is still being worked on. Final revisions are being done. I'm sure when the unit is finally released, you will be able to download the manual from the Futaba website.

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

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02-22-2011 07:23 PM  6 years agoPost 253
Dr.Ben

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Richmond, VA, USA

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There is user adjustable swashplate rotation/phasing up to +/- 90 degrees.

Ben Minor

Team Synergy Team Futaba Team Kontronik USA
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02-23-2011 04:22 AM  6 years agoPost 254
Salesmanheliboy

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Nashville, TN

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Well I'll jump in just a little.

I have logged a fair amount of time on the 750 and am more then a little happy with it.

I put it into one of my (back up) contest models and tried to simulate the same pitch curves. I am running an O.S. 91 (w/ regulator - Cool Power fuel) and found a significant power increase as well as more room at the bottom of the autos.

I wanted to primarily see if this system could work well for precision (F3C) contest maneuvers; mostly the hovering stuff. I am well convinced that the GY-750 is more then adequate.

Aerobatics are a real pleasure too. I found that the same model can be used to do 3D stuff (I did some mild tick toc's and flips) with great ease and stability.

I look forward to putting more fuel through the model.

Tim

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02-23-2011 05:08 AM  6 years agoPost 255
Dr.Ben

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Richmond, VA, USA

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edited

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02-23-2011 11:52 AM  6 years agoPost 256
alfred

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Australia, New South​Wales, Mid North​Coast

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Tim
Can you supply the info or try a couple of things for me?

Now I don't want you to risk your model.

One of the common problems with FBL units is autorotations at the end, if the head speed has decayed or last minute corrections are done.
Most of them want to correct while already on the ground and cause a tip-over or nearly a tip-over.

Try to do some autos and bleed the head speed a bit more every time.
See if you get to the point were it wants to over-control after touchdown.

Next one is lift off.
See if it wants to tip-over if you give it commands during lift-off, but while still on the ground.

Next, if you are on a slight slope, can you start to correct it to level, before getting completely of the ground?

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02-23-2011 12:00 PM  6 years agoPost 257
Eury

rrProfessor

Dover NH

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You read about people having those problems, but on the 3-4 years I've flown FBL helis with the VBar, Gyrobot, and SJGD, I've never had any of those issues. I've always taken off normally, using cyclic to compensate for wind and uneven terrain, and shot thousands of autos without issue. Exactly like a Flybar heli. The only difference in setup I use is I turn down the response using dual rates and expo in throttle hold, and only then because it it makes it more flybar like in the flare, it still works fine without that setup and doesn't tip over.

Nick Crego

Citizen #0168

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02-23-2011 01:20 PM  6 years agoPost 258
Dr.Ben

rrMaster

Richmond, VA, USA

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Tim will weigh in I'm sure about your questions and esp. the auto stuff; my model is new and I've not done them yet (was working out something in the ESC this past weekend). As to the question about concerns at lift off and regardless of model's attitude, I've had zero issues with the problems you've described. The 750 exhibits absolutely no bad tendencies on the ground. I literally manage the model around the point of liftoff exactly as I've always done with any FB model. I could switch back and between the 750 and FB with zero thought or concern for special handling.

Ben Minor

Team Synergy Team Futaba Team Kontronik USA
Progressive RC

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02-23-2011 07:33 PM  6 years agoPost 259
alfred

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Australia, New South​Wales, Mid North​Coast

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Thanks Eury and Ben

My FBL unit certainly showed these behaviors, so it's not something that I read about.
In the mean time the FBL I use had seen at least two firmware updates, so this might have improved by now.

In it's manual it actually states not to give any cyclic input before and during lift-off, for precisely that reason.

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02-24-2011 04:40 PM  6 years agoPost 260
Salesmanheliboy

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Nashville, TN

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Autos

I actually did quite a few of these mostly because I understand other systems have a challenge in this area.

I have bled the head speed off all the way and have not found that problem (but I am still a bit careful with it during this testing phase).

That was one of the questions I was asking when some of the pilots were testing the sensors this past November. I'm not sure why, but I don't believe the 750 suffers from those problems (I was very happy to know and experience!).

Tim

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Scorpion Power Scorpion Power
HelicopterFlybarless Rotor Head SystemsOther › Futaba FBL unit due early 2011
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