TGY-306G-HV Turnigy Servos Query

[Trexwilly]

Same here jet... I have a friend who uses the BeastX and he has had it happen a few times?

[blue92ehsi]

But they haven't ever failed mid flight correct? Once they initialize they are good?

[BladeScraper]

Mine sometimes shuts down on the bench if I leave it alone for a while. A very very slight nudge will get it back on. It never shuts down in flight since the blades are always putting a load on the servos.

[Trexwilly]

Yup, if they do not start up correct, you just unplug and start over, once good they stay good.

[blue92ehsi]

Lol power save mode? Did anyone else have to turn their cyclic gain down with these coming from align 415s? I have a cylic wobble now which I assume has to do with the servos being much more precise and much tighter so they respond to more sensor input. I will turn gain down later and report back

[blue92ehsi]

Turned down cyclic gain. Wobble gone. But damnit took me 5 tries to get all 3 servos to initialize just now. I run at 5v still. Could they have anything to do with it?

[Trexwilly]

Don't think so, it is a Beast x thing, something about arming to slow, so the servos get no pulse so they don't start... At least that's what I remember reading?

[jetblue2135]

I wouldn't think so but anything is possible, I run mine at 6V. I wonder if it has to do with the beast x, the initialization issue posts I have read have had a BX involved....but then again I can't see why. It's been years since I have had BX FBL controllers. All I know is....servos that don't initialize consistently make me raise an eyebrow.

The only OBVIOUS things I can think of off the top of my head are to just double check the:

-The "tape mod" to the bottom of the circuit board
-Digital servo is selected and not analog
-The correct servo frequency and pulse are selected
-The servo wires are plugged in to the controller all the way and secured
-Make sure the servo lead wires are securely soldered inside the servo and nothing is interfering or making contact with them
-Try re-binding your receiver?

I know these are simple things but doesn't hurt to check the basics. What am I doing here on the computer...the sun is up, I better get to the field!

[boykster]

I had a similar initialization issue a while back when I was using a ZYX-S, but it ended up being my external BEC that was flaky. I switched to using the internal BEC on the YEP45 and the problem went away.

[jetblue2135]

External BEC's can be funny sometimes, I had a Gryphon Polaris on my 450L and it was doing some strange things every once in a while. I took it off and just used the internal BEC on the Edge 50 Lite and the issues disappeared.

[blue92ehsi]

I suppose I could test this for everyone. If I remove my external bec and plug the wire back in to my align esc and do some bench tests.if they initialize everytime then I'll know I should just buy a new esc and ditch the external. I run 4s on a 2221-8 tho. Would a yep45 be enough? And is it a linear bec? Or the other one I always forget what's better

[LEORITY]

I ordered 5 of these servos and they will arrive soon (I hope) here in Australia. When they arrive I will take lots of pictures and, of course, after adding the tape inside, will test them to see if I've got the issue. I also ordered the blue "servo saver arms" to get the hands on them and feel how they bend/flex, etc...
I will let you guys know...
Cheers!

[blue92ehsi]

Lemme know on the savers

[salrica]

I really don't get why The people start talking about something assuming that they found a bad servo, bad gyro or whatever bad without making sure to check everything else.
What this people is doing is getting bad info to whoever reads this kind of threads giving bad impression to XX brand.
If you upgrade your servos make sure that your internal BEC us up to the task.
That's why you see new ESC like CC Talon 35 with a big internal BEC, or the new hobbywing.
Make your homework ask the people here or in any forum but please try to fix the problem first, then after all the test have prove the culprit then you start to talk about a bad gyro, servo or whatever. Most of the time is human error and miss information.

Sorry I had to vent it out.

[blue92ehsi]

I understand your point but your gonna tell me that a 10amp castle bec isn't up to the task of running 3 cyclic servos? I never said the servos are bad I said there is a compatibility issue. And MKS servos do the same thing and those are expensive brand name servos

[salrica]

Right.
But there is a fix for that.
Use a cap, a "y" harness.
Let me look back and I will post it.
But if you are using a fbl controller (3 gyros) + hungry power servos and not upgrading your ESC......

[blue92ehsi]

Explain the cap and y harness. And once again how does upgrading the esc matter if I have a 10 AMP BEC??? I feel like you keep missing that. The esc doesn't power the fbl unit and servos anymore. And even upgraded escs only have a 5-6 amp bec.

[salrica]

You are running and I'm an slow person
Here something to chew on

https://www.helifreak.com/showthread.php?t=546475

Bad007 gave me this explanation on a 3gx. But symptons are the same.
Let me look up about the y harness and the capacitor

[blue92ehsi]

Ok so basically give the fbl unit 2 power leads that makes sense I'll try it. I'll also bump the voltage to 6.2 like suggested

[salrica]

Here more from a RR member, heli770
The servos are fine. You have to remember that with the FBL system. You are using a lot more current. Because it's running three gyros in the unit. The big problem with the CC. 10A BEC is that's the burst amp. rating and real rating is 5A. Even with a 10A burst rating the servo connector is rated at 5A and you will lose voltage at the connector. That's why a lot of BEC now use two cables and servo connectors. Two connectors at 5A = 10A.