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HomeAircraftHelicopterHelicopter Main Discussion › Convert older 700 fbl to fb
12-09-2015 10:20 PM  35 months agoPost 1
groran

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CALIFORNIA CITY, California

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Friend of mine wants to go from older 700 fbl to fb set up. Are the main frames that hold servos the same? Also, are the control arms different lengths etc? What would he need to do or change to go to fb? thanks for any input.

Randy Lafleur

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12-09-2015 10:32 PM  35 months agoPost 2
meowguy

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Saco, ME

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The only hardware changes will be from the swash plate up. He wants to go from fly-bar-less back to fly-bar? That's unusual.

"Sweet dreams and flying machines in pieces on the ground." J. Taylor

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12-10-2015 12:30 AM  35 months agoPost 3
jschenck

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La Vista, NE.

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what brand/model heli?

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12-10-2015 01:06 AM  35 months agoPost 4
cantw8tofly

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Slidell Louisiana

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Its a trex 700 nitro pro. My futaba T7C that I was using shot craps so I bought a new 14sg. The problem I am having is the fly barless set up with the new transmitter. I am tired of fighting with it. I am not a heli noob but not an expert either. I have built several flybar heli's with out any troubles. When I bought this 700 It came set up and I had no issues. I have been fighting with this thing for weeks and making no progress. I was looking to trade or sell it but my friend talked me into looking into this conversion before I did.

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12-10-2015 01:24 AM  35 months agoPost 5
don s

rrElite Veteran

Chesapeake, VA

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What FBL unit? Is your problem the FBL unit itself, or the transmitter?

E820, Raptor G4N, X50F/E, E620, Forza 450, and some planks.

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12-10-2015 01:30 AM  35 months agoPost 6
rcflyerheli

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Granbury, TX USA

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My thought is that you are gonna have to do a complete setup anyway with the new transmitter.

Do you have the FB head for the heli. I don't even know if Align even still manufactures and sells a FB head.

As has been asked, what FBL unit?

Logo 700, Specter 700, Goblin 700, Trex 700DFC, Gaui X7, Logo 690SX, Logo 600SX; Trex 470 Trex 500
Amain Team Rep

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12-10-2015 01:33 AM  35 months agoPost 7
cantw8tofly

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Slidell Louisiana

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Its a Robird flybarless. Im having some kind of problem and I cant figure out if im fighting a mechanical problem, a radio problem or a controller problem. All I know is that if it had a fly bar I would be flying it instead of being pissed off at it for a month.

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12-10-2015 01:37 AM  35 months agoPost 8
cantw8tofly

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Slidell Louisiana

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When I switched radios I noticed my swashplate no longer sat level. Then after checking a few more things I found that I had an extreme amount of negative pitch at idle and not anywhere near enough at full throttle. I tried to fix it several different ways and now its so messed up I am not even sure where to start.

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12-10-2015 01:58 AM  35 months agoPost 9
cantw8tofly

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Slidell Louisiana

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12-10-2015 02:00 AM  35 months agoPost 10
cantw8tofly

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Slidell Louisiana

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Its a nice machine. I just want to fly it without all theses problems.

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12-10-2015 02:06 AM  35 months agoPost 11
don s

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Chesapeake, VA

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Do you have the Robird software so that you can do the programming?

E820, Raptor G4N, X50F/E, E620, Forza 450, and some planks.

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12-10-2015 02:41 AM  35 months agoPost 12
cantw8tofly

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Slidell Louisiana

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Yes I do.

How do I make sure that all my servos are centered and everything at 90 degrees with the flybarless? This is where I am having problems I think. The new radio didn't center all the servos in the same place as the old one did. (I think). Should I take the controller out of the system and make sure im centered and level without it? Then set the controller up?

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12-10-2015 02:55 AM  35 months agoPost 13
don s

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Chesapeake, VA

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In the radio make sure there is no sub-trim being used, then set a -100,0,0,0,100 pitch curve. (This curve is useful for setup, but don't fly with it.)

Leveling the swash at low/mid/high pitch is step 4 in the Robird setup.

Robird traffic is pretty light here but you can find more info at the other site (helifreak) in the Robird support forum. There are also Robird setup videos on youtube.

E820, Raptor G4N, X50F/E, E620, Forza 450, and some planks.

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12-10-2015 03:05 AM  35 months agoPost 14
cantw8tofly

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Slidell Louisiana

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That is where the problem lye's. The program keeps telling me that I have reached the limits and to adjust the servo horn. I never moved anything so why should I have to do that? unless the new radio didn't center the servos in the same place as the old one did. So ill ask again. Do I need to take the controller out of the system and make sure im centered and level first? Then set up the controller?

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12-10-2015 03:25 AM  35 months agoPost 15
don s

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Chesapeake, VA

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You can to be sure, but it's not necessary.

E820, Raptor G4N, X50F/E, E620, Forza 450, and some planks.

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12-10-2015 03:34 AM  35 months agoPost 16
cantw8tofly

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Slidell Louisiana

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Well to make this worse I got frustrated and reset the controller. Now I am completely lost with this thing. I have never set up a flybarless before and I think my brain wont let go of what I know about the flybar set up. I have watched all the videos on youtube and not a single one of them explanes how to set up heli mechanically before programming the controller.

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12-10-2015 03:49 AM  35 months agoPost 17
rcflyerheli

rrKey Veteran

Granbury, TX USA

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Different transmitters will have different neutral point and end point values. Mostly small differences, but there just the same.

Setting up different spektrum transmitters with my Vbars, i always had to change the input values slightly to get the same starting point in the Mikado setup software.

I don't know about your Robird, as I haven't set one up, but of the ones I have setup, (Vabar, 3G, 3GX, and Ikon) they have all required some kind of subtrim adjustment to get the servos at 90 degrees at mid stick.

The first time setup with a FBL system can seem daunting, but it will get easier with practice. The same things that apply for FB also apply for FBL. Just start at step 1 in the setup and proceed through the steps.

FWIW, I would NOT expect just to bind a new TX to the RX and have anything be correct. The previous setup had pitch curves, throttle curves, end points, subtrim, channel direction, etc all set, and unless you know what they were, the new TX will not work. I learned this lesson when I first started flying helis, and switched from a DX6 to a DX7. The DX6 had been set up at the factory, and of course the DX7 didn't have any of the programming set, and it sure caused me some grief, but it taught me a lesson. Set up every heli from scratch.

Good luck.

Logo 700, Specter 700, Goblin 700, Trex 700DFC, Gaui X7, Logo 690SX, Logo 600SX; Trex 470 Trex 500
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12-10-2015 03:56 AM  35 months agoPost 18
gologo

rrKey Veteran

Sedalia, Mo USA

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Sounds like you might want to go ahead and set it up as NOBAR first then,
(using a standard rx if you have one laying around) to get the servos centered and swash level/proper directions on the swash. At least doing it
that way, you might mentally feel like you are back in control of things,
and you could even fly it that way for a bit if you had a good tail gyro
laying around also.

Might let you also learn your new radio w/o having to learn the FBL unit both at the same time.

Then read up on the Robard system, (I know nothing about it either), and
try to work your unit back into the setup.

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12-10-2015 04:06 AM  35 months agoPost 19
jschenck

rrProfessor

La Vista, NE.

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The Futaba 14SG has a great setup feature - in the servo screen you can set it to put all the channels at center and hold it there. This puts the gyro gains at zero and all the swash servos at zero/center. Then you can do the mechanical setup - 90 deg everywhere. My experience is you get this part of the setup right and the rest is minor adjustment from there.

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12-10-2015 04:09 AM  35 months agoPost 20
cantw8tofly

rrNovice

Slidell Louisiana

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ok I think I will try to get everything set correctly without the controller. That makes more sense to me.

NOTE...I didn't try and just bind a new radio to it and fly. I transferred the settings from an 8sg that used to fly the heli before I bought it. we used a sim card and it seemed to work at first but then it all turned to crap on me really fast.

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HomeAircraftHelicopterHelicopter Main Discussion › Convert older 700 fbl to fb
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