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HelicopterMain Discussion › Flew a FBL helicopter for the first time!
09-16-2017 09:31 AM  68 days agoPost 1
InvertedDude

rrApprentice

USA

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I got my E620 in the mail. UPS damaged some of the items, but lucky I had some replacements. Put it all together and verified everything.

Okay....started to lift off and the heli gets weird. Try some light corrections and the problem went nuclear. The heli started tipping over and there goes the blades grinding off paint and CF! I quickly made the right correction and hit throttle hold. Lucky, I was able to get it back on the skids.

Then comes out my mouth, "you dirty %$#@%#$R". It was just automatic.

I went and sat down to think what was wrong and why did the machine behave this way? Pulled my laptop for runryder info, I noticed a common statement such as, "lift off with no corrections". I was thinking, you guys want me to wreck my heli!

Went and did all the setups and reprogrammed the helicopter and 3GX.

I decided to add more throttle in the curves to get the RPMS up. I tried again, heli gets funky....hit throttle hold. Feels like it want to tip over....said to myself....you gotta lift off like experienced RR folks. I settled down and did not touch the cyclic, but throttle up quickly and lifted off. The helicopter sits in a nice hover. My brain is having spasms and saying you need to make corrections!!!!!

Played around with it....it is weird....feels very disconnected. It flies and has tons of pop....will I give up my flybared helis....no. I will keep working FBL for now.

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09-16-2017 12:35 PM  68 days agoPost 2
870heli

rrVeteran

Monson Ma. USA

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Yes it is a little weird in the beginning. Correcting at liftoff is a no no . If you give it a command and it can't move it just keeps feeding cyclic until it flips over.
I still have several flybared heli's that I really enjoy flying. It's to bad they are all going away.
Buz

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09-16-2017 03:33 PM  68 days agoPost 3
ICUR1-2

rrElite Veteran

Ottawa, Ontario

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I believe it has more to do with the FBL unit you are using.
The behavior you are describing doesn't happen to all FBL units.
I spool up with a little bit of negative pitch.
It allows me to correct the tail and level it just before lift off

Using brain ,ikon. Mini-v , -sk 540 ,all behave this way for me .
Having fun

spending time, paying attention

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09-16-2017 03:42 PM  68 days agoPost 4
InvertedDude

rrApprentice

USA

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I wonder

How many people have wrecked their helicopter using 3GX FBL for the first time?!

What does the gain on the 3GX do for the ALi and Ele? They are currently set at 12 high noon.

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09-16-2017 03:43 PM  68 days agoPost 5
nappyroots2182

rrElite Veteran

Moline, il

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Sorry about the problems. I have up on that unit and did a few years with beastx. It was allot of fun until I tried ikon2. Then it felt perfect. I think you should step back and try another fbl before you give up on fbl period. Pm me if you need any other info

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09-16-2017 04:43 PM  68 days agoPost 6
ICUR1-2

rrElite Veteran

Ottawa, Ontario

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Too much cyclic gain will cause the same effect as tail gain
I set mine low ( defaults) and work up slowly.
I tried a 3gx once . I liked the software but the hardware failed in my hands and after reading all the trouble shooting. I gave up .

Of all the units I have tried the ikon and msh brain are the easiest to use

spending time, paying attention

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09-16-2017 05:29 PM  68 days agoPost 7
RM3

rrElite Veteran

Killeen, Texas - USA

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Ive never had a problem correcting at lift off... but then again I use a CGY750...

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

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09-16-2017 05:52 PM  67 days agoPost 8
InvertedDude

rrApprentice

USA

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Flew it

I did some incredible smack down Alan Szabo JR magic! Whoa....nothing like cross winds messing up your mojo of king hover!

I think I am gonna throw away the 3GX....it is always windy in AZ during the cooling months. I can work with wind with a flybar heli, FBL....it was more than a handful. I am surprised I didn't smack the heli into mother earth who is always happy to claim helis!

Jezus man! I have another FBL unit called Spartan Vortex E1, should I try that?

If this doesn't work, I am willing to try brain MSH.

RM3, don't tempt me!

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09-16-2017 08:03 PM  67 days agoPost 9
ICUR1-2

rrElite Veteran

Ottawa, Ontario

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Spartan Vortex E1 should work out. I haven't tried one though.

spending time, paying attention

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09-16-2017 08:20 PM  67 days agoPost 10
Richardmid1

rrProfessor

Leeds, England

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3GX is not ideal. There are people who can get them working well but they are few and far between!

Fbl units are a lot better than they used to be and these days you can do what you like with the heli on the ground before and during lift off.

60% of the time, it works every time!

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09-16-2017 11:03 PM  67 days agoPost 11
dkshema

rrMaster

Cedar Rapids, IA

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Dwayne --

What version of software do you have installed in that 3GX?

If you don't have version 5.0, download and install it. 5.0 was pretty darn good. It went a long way toward curing those low-head speed tip-overs as you spool up. V5.0 isn't tricky when on the ground, it's well-behaved.

If you DO install V5.0 once you get things sorted out, put the tail gyroin to RATE mode and hover. Adjust the tail rotor linkage until the heli will hover without the nose turning left or right. Re-set the left and right travel limits after tweaking the linkage. Go back and fly in Heading Hold mode, the tail will be very good.

Also, there are two pots on top of the unit. They are the elevator and aileron gain.

The normal starting point is with the screwdriver slot at "12 o'clock" and I've found that the unit behaves quite well with them at about the "10 o'clock" position.

How are they installed -- what did you use for mounting tape? I've had great luck with the old standby 3M gray double-sided mounting tape.

I still have the 3GX installed in a couple of 600N helis, and they have behaved well. They don't feel disconnected" or weird. The heli feels tight and responsive.

At one point, I was flying a dozen of the 3GX units, and none ever gave me trouble (except with version 4.0 software which had less than a favorable roll-out).

Make sure you went through the initial calibration steps and set the head up correctly mechanically.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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09-17-2017 12:26 AM  67 days agoPost 12
JLF92677

rrNovice

Southern California

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I am using 3GX v5.0 software on a T-Rex 450 and no problem correcting before lift off.

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09-17-2017 12:33 AM  67 days agoPost 13
Heli_Splatter

rrElite Veteran

USA

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I know this is too late now, but when I am working with a new flight controller, I try to set it up and get it working on a bird that I am not afraid of losing.

I too had trouble with the 3GX, but I have seen it set up and work well. I just did not have the patience. I fly BeastX with specktrum receivers with good results, but there is a learning curve there too!

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09-17-2017 12:55 AM  67 days agoPost 14
icanfly

rrElite Veteran

ontario

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after experiencing only good things with a 3gx 5.0 upgrade there's little to blame on the gyro except maybe too high gain on the ele/ail. It was on a 450 on soft grass and I had to jog the cyclic stick to level the rotor before completely spooling up. I think it can be more sensitive to vibes than other gyros I've used.

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09-17-2017 02:37 AM  67 days agoPost 15
utahbob

rrVeteran

St. George Utah

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4 yrs. or so ago...

I was kinda in the same situation as you..didn't know anything about flybarless systems; didn't want to have to hook up to a computer to set-up and adjust some mysterious "auto control unit"..on my heli's..I really resisted fbl..but I wanted a logo heli so I put the mini-vbar on my 550..from the very first flight and the next 300 or so this unit continues to amaze me..not saying it's the best..but for someone who struggles withh computer crap..I have been able to get my two electric heli's flying great with very little computer time..the things just work!

I do a great decending funnel!

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09-17-2017 03:03 AM  67 days agoPost 16
Calil

rrApprentice

Brazil

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When I first used IKON for 1st time I threw away tree 3GX units on the garbage.

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09-17-2017 03:36 AM  67 days agoPost 17
JuanRodriguez

rrProfessor

The Villages,​Florida

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3G originally and now 3GX with V5..... no issues whatsoever with tip overs when lifting off ....

Been there, done that and old enough to know better.....

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09-19-2017 10:40 PM  64 days agoPost 18
InvertedDude

rrApprentice

USA

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In progress of using 600ESP

Currently in the process of installing the FBL system on the Trex 600 esp. Will get back with you guy soon. You can help me tune the the FBL to be rock solid. I do not want to risk my raptors!

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09-22-2017 03:05 AM  62 days agoPost 19
old nitroman

rrVeteran

Naples florida

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I took a 15 year break, came back and was shocked whats out there. My last ship i flew was a schluter futura. I always hated looking at the flybar just kills the look.,anyway i built an e-5 6s with the ikon and did every step very slow asking a lot of questions. I was shocked, ship was smooth and only had 2 clicks of trim. It does have a different feel. But i really like it, no pitch curves, throttle curves, and no revo mix. Every ship now has an ikon, synergy e-5,e-7se,766, scale roban 800 222, scale Huey 450.I have never used the rescue, habit of throttle hold switch. None had any bad habits on take off

E5s and E7se,and a 766, Roban bell 222 800 superscale,450 bell 4 bladed head,gobby 380and 420 ,180cfx

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09-22-2017 03:09 AM  62 days agoPost 20
old nitroman

rrVeteran

Naples florida

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and 2 gobby 420s

E5s and E7se,and a 766, Roban bell 222 800 superscale,450 bell 4 bladed head,gobby 380and 420 ,180cfx

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HelicopterMain Discussion › Flew a FBL helicopter for the first time!
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