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HomeRC & PowerAircraftHelicopterFlybarless Rotor Head SystemsAlign 3G › FBL - 8v problems.
01-26-2010 12:13 PM  8 years agoPost 21
lsnover

rrVeteran

Lehigh Valley, PA

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I think it's unrealistic to expect servos rated at 6v to last long with this system on 8v. The FBL system is putting more demand on the servos.

That said, I would not expect them to "fry" just connecting the thing. That's sound a little too coincidental.

I had an Align system on order, but have put it on hold for now. Too many little issues. Waiting for the CY Total-G for my first venture into FBL land. I hope Aligns system works out, but I think they have some issues to work out.

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01-26-2010 12:14 PM  8 years agoPost 22
S76 Mech

rrElite Veteran

Hatboro, Pa.

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- Were are the Align reps running the 3G?
- What servos and voltages are these fellas running?

Gaui Greatness X7, X5, NX4, X3

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01-26-2010 12:19 PM  8 years agoPost 23
Darren Lee

rrElite Veteran

Woodstock, GA

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I'm not about to buy a regulator just for giggles.
There is a very easy and cheap solution for this and it doesn't require a regulator.

http://www.readyheli.com/Hyperion_L...hp-fr21002s.htm

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01-26-2010 01:40 PM  8 years agoPost 24
The Old Guy

rrVeteran

UK Surrey

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Thanks HiroboFreak
This is my setup to a tee and i read the thread at 12 pm and my 3G arived at 1-30pm. Wow you saved me a bundel of hassel and also a bundle of cash!!!!!!!!!.
I have a Fromco reg in stock so will downgrade to 6volts.
Thanks again (to all inputs)

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01-26-2010 02:05 PM  8 years agoPost 25
Schuster_Helis

rrVeteran

Moscow Mills, MO.

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I still say that 8v is not the problem. I have hundreds of flights on a 8717 8v 7100R with V-Bar 8900 tail setup with "0" problems ever! I know that with vbar and the 7100R you have to use an adapter cable on the rudder ch so that you do not get 8v feeding back into the regulated 5.2v rx tail ch. I am not sure on how the 3G wiring is internally but with vbar if you power one center pin with 8v then they all are 8v. I will find a pic of it and post when I get home. I am sure you need something like this with the 3G also. Someone please let me know if the 3G is different for some reason.

Jim
Team ME, Team Helidirect, Pulse LiPo, Scorpion ESC

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01-26-2010 02:17 PM  8 years agoPost 26
george0079

rrElite Veteran

USA

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The 3G has 2 independent power circuits. One for cyclic, and one for tail.

Hell... I can fix that.
Uh oh..
Nope.
It's ***ked!!!
RE-KIT!!!!!

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01-26-2010 02:39 PM  8 years agoPost 27
darkfa8

rrElite Veteran

Brick, NJ - USA

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as you know, those servos aren't rated for over 6vdc for a reason.

There are a few people out there running them over 6vdc without any current or reported problems.

maybe try the FBL on a different model or with different servos. maybe you can exchange the unit?

either way, just because a handfull of people have not had any trouble over-volting servos doesn't mean you won't. Also, unless you're "in the family", Alan or any other rep isn't going to tell you whether or not or how often their equipment fails. The pros push all of their hardware harder than 99% of the weekend pilots out there throughout each and every flight, of which there are hundreds flown every year. They also tend to push their equipment past the limits to gain as much of a performance edge as possible.

Running at or above these limits severely decreases longevity and reliability.

Drop the voltage down to within specs, or get servos that are rated for operation at the voltage you wish to supply. Unless you're a rep, you're not going to get warranty coverage or much sympathy from manufacturers if you're trying to run stuff beyond specs and have a failure as evidenced by Align's response.

- Dan Goldstein
Team Revolectrix

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01-26-2010 04:18 PM  8 years agoPost 28
S76 Mech

rrElite Veteran

Hatboro, Pa.

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..

Gaui Greatness X7, X5, NX4, X3

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01-26-2010 04:37 PM  8 years agoPost 29
blade3d

rrElite Veteran

New Jersey USA

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Warning LOL

Blade3d

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01-26-2010 04:41 PM  8 years agoPost 30
steph280

rrElite Veteran

Irvine, California

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And changing your title to "WARNING!! - Align 3G FBL - MAJOR problems!!" isn't going to solve anything for you or hurt Align's sale. People will read this thread and make the judgment themselves.

Why don't you call JR and ask them why your servos failed? You wouldn't because you are exceeding their spec.

The 3G isn't amplifying your voltage, it just passes through whatever you feed it.

So why are you blaming Align for running your equipment beyond spec? Would you call OS about engine failure if you run 60% nitro fuel and the thing bust into pieces?

It's unrealistic to expect manufacturers to test their products with every scenarios where equipments exceed their spec.

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01-26-2010 04:42 PM  8 years agoPost 31
BOOGIE

rrElite Veteran

LAFAYETTE LA

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Something just does not sound right I know many people are running 8717 on 8V both with a flybar and without with no problems. Maybe if 1 servo went bad but all 3. What RX battery are you running?

MSH USA / Lynx Heli Innovations

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01-26-2010 05:14 PM  8 years agoPost 32
Jeff polisena

rrElite Veteran

westpalmbeachflorida usa

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Ive been running (8.4 max charge) 8V on both my 600,s one with 8717's and other 610's I have not lost any servos but Im using Mikado . This could be a coincidence or could be from over gaining the gyro (setup) as well as something internal in unit . Without the proper testing equipment you will not know . I do know Align servos are like Futaba if you bind for too long or over work for a long period they get hot and fry JR servos will take a beating .One servo could have went and back fed power and burned up others , you will never know . I would use some junk servos and hook up to fly and see if it happens again . I had a tail servo burn up a speed control (Align 250) .

I stole it ,flew it and gave it back ;)

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01-26-2010 06:44 PM  8 years agoPost 33
duke666

rrKey Veteran

Hampshire, UK

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Why don't you guys put water in your car engine sumps instead of oil??????????????? They telling you what voltage it can take , don't assume because some people have gotten away with this that it's okay , stick to the specs , and most problems will go away!!!!
And changing your title to "WARNING!! - Align 3G FBL - MAJOR problems!!" isn't going to solve anything for you or hurt Align's sale. People will read this thread and make the judgment themselves.

Why don't you call JR and ask them why your servos failed? You wouldn't because you are exceeding their spec.

The 3G isn't amplifying your voltage, it just passes through whatever you feed it.
I'm with wirlybird & steph and I also think the title is very misleading. Perhaps we should all post a similarly titled post when anything fails!

Duke

OOOPPS............

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01-26-2010 06:55 PM  8 years agoPost 34
ChrisJ

rrNovice

MI

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I do not have an align FBL unit but can the pulsewidth to the servos be adjusted. If it is set wrong in the FBL unit it could ruin the servos. I dont know if its adjustable, just trying to help.

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01-26-2010 08:00 PM  8 years agoPost 35
panzlflyer

rrApprentice

Goldsboro,NC,USA

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you can set frame rate for the tail servo and ana/digi, the others are not adjustable.

Voltage is pass thru on both busses so that aint the cause.
FBL does make them work hard AND it is easy to get binding if the endpoint in DIR is not correct.
Tis always a good thing to remove linkage until you are sure that the servos operate correctly during setup.
Case in point..until I set the frame rate and Digital in the rudder menu the servo went hard over, which if it had been connected would have done it no good.
Some servos only take a few seconds to burn up.

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01-26-2010 08:10 PM  8 years agoPost 36
dodgemcopter

rrNovice

Oztraliya

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You did forget to mention that in another forum you tried the FBL electrics in your 500 and it worked perfectly and you doubted you would get any simpathy with a warranty claim as you cut and shut wires on the unit itself. Now Align are the baddies because they won't cover your short comings.....yet you still went ahead and purchased another Align FBL unit.....so it can now only go two ways, run the risk of frying another unit by jambing more volts than advised (by Align AND others) or drop tha volts and look like a ninkumpoop if it works

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01-26-2010 08:23 PM  8 years agoPost 37
BOOGIE

rrElite Veteran

LAFAYETTE LA

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Well we will see if its because you were running 8717 on 8v with align FBL unit because I have one comming and will be setting it up with the same servos on 8v's. I will shoot a Vid just incase it hits the dirt

MSH USA / Lynx Heli Innovations

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01-26-2010 08:44 PM  8 years agoPost 38
HiroboFreak

rrVeteran

Central Coast, NSW, Australia

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Read the posts again.
I never said the unit didn't work correctly - it works as expected.
I never said I wanted Align to pay for my shortcomings.

I am fully aware that it would not be warranted due to my lengthening of Rx wires (although if this is the cause the unit wouldn't work at all).
I fully accept that it may not be warranted. That's not my issue here.

All details are not posted here.
Further details are here.

I originally wanted my unit sent in for inspection, even if at my cost to see what the problem is, or clear the unit of any errors.
Align dismissed it & blamed it on voltage immediately.

Even though I questioned Bert & Alan on their 3G setup:
Hi Dennis,

I am running Align DS-610 servos on 8 volts with the Spektrum 7100R receiver.

Bert
I am still using the 610s with no issues to date with the 8v. Hopefully you have better luck with the new servos.

Alan
Sorry to bring those guys into this.

I am now having this unit tested locally.

Yes, the servos are only rated to 6v
The "Warning" in the title is to "WARN" anyone using above rated voltage that the servos life will be shortened. (As per Align's admittance.)

Personally, when my new unit arrives, I will be running DS8915's or Align DS610's on 8v, just like their reps do, & many others, & I bet my left one I don't have any issues, & they certainly won't fail after 10 mins on the bench.

And yes I will be lengthening the wires.

Believe it or not, I may have got a faulty unit!

T-rex700n VBar 5.3 Pro | T-rex700e DFC VBar 5.3 Pro | JR DSX9
Team RCBits | Team Lynx

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01-26-2010 08:57 PM  8 years agoPost 39
Eco8gator

rrElite Veteran

Palm Beach, FL

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I have to agree, typically you cant damage an 8717 plugging it into any fbl system. First off the system does not have any affect on input voltage. The only other is the frame rate to the servos and Ive personally tested the 8717 servos at 300Hz at 8V and had no issues.

The only thing that could possibly be an issue is there could be a short on the power bus causing some weird stuff to happen.

Check the resistance between the pos and minus pins on the 3G. If you find a low resistance Id send it in and then make them pay for your damages If someone wants to help out please poste the resistance between the pos and minus pins from their working unit

C

Xera Motors
ProBar
Minicopter
Thunder Power

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01-26-2010 08:59 PM  8 years agoPost 40
Reesy

rrKey Veteran

In the doghouse ... Nottingham UK

My Posts: All  Forum  Topic

WARNING

Anyone who put's WARNING in the title..

Don't

let

him

borrow

your

servo's

Paul

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HomeRC & PowerAircraftHelicopterFlybarless Rotor Head SystemsAlign 3G › FBL - 8v problems.
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