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T-REX 550 › 3gx 3.0 question regarding the Trex 550e
01-26-2013 10:05 PM  4 years agoPost 1
srgfitness

rrNovice

west chester pa usa

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Hi everyone,
I see a lot of people saying that with the new 3.0 firmware that a separate bec is needed to prevent brown-outs. Now that they are using the Castle Talon 90 esc with built-in bec is it really necessary to run the separate bec? Using the stock servos that came with the 550e dfc super combo will the Talon bec be adequate?
If so what voltage should I program the bec to put out?
Thanks,
Scott

When possible shoot first. When that isn't possible shoot fast.

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01-26-2013 11:01 PM  4 years agoPost 2
coolice

rrKey Veteran

Northamptonshire, England

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Hey Scott.

Yes the Talon BEC is more than up to the job of powering the flight gear. Essentially it is a CC BEC PRO built into the ESC, so you have 9amps continous to power your servos.

For the Align servos set the BEC output to 6 volts.
.

Ian Contessa
Team Robbe SchluterUK
Midland Helicopters

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01-26-2013 11:17 PM  4 years agoPost 3
srgfitness

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west chester pa usa

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Much appreciated

Thanks Coolice,
This is my first actual entire build and set up that I have done myself. I've built a bunch of helis over the years but always had them set-up by a pro. Now days with digital pitch guages and fbl heads with less links I thought I would try one myself. Thanks to your info I will maiden this heli tomorrow.
Thanks again,
Scott

When possible shoot first. When that isn't possible shoot fast.

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01-26-2013 11:43 PM  4 years agoPost 4
coolice

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Northamptonshire, England

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You're very welcome buddy, glad to help.

The Talon's turning out to be a great unit, shame the logging feature has been removed, but finally a powerful BEC & ESC in one unit.

Keep us posted on how the maiden goes.
.

Ian Contessa
Team Robbe SchluterUK
Midland Helicopters

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01-27-2013 03:37 AM  4 years agoPost 5
NQNA

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USA

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Just don't use the 3gx

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01-27-2013 04:31 AM  4 years agoPost 6
dkshema

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Cedar Rapids, IA

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I had been flying my 550e with a 3G system for nearly three seasons using a CC ICE 100 ESC and its internal BEC. Late this past season the 3G began giving me random tail kicks.

At that point I replaced it with a 3GX system, V2.1, and continued to use it with the CC ICE 100 and its built-in BEC.

When V3.0 was rolled out, and I loaded it on my 550e, all hell broke loose. If I even so much as tapped the 3GX, the servos would go nuts and my AR7000/Satellite system would start flashing and blinking.

I reverted to V2.1, all was right with the world. Tried this experiment at least three more times, always with the same results.

I contacted the folk at Grand RC since they are an Align distributor, asking if there were any places where Align electronics could be repaired (I already think I knew the answer, but decided to press the question anyway). I never actually got THAT question answered, however the folks at Grand suggested I try an external BEC with more amp capacity.

I happened to have a new CC BEC Pro, so I hooked it up and gave it a shot. With V3.0 installed, and with the BEC Pro running things, the system once again is rock solid.

So yes, the answer is that when you convert from V2.1 to V3.0, you should make sure your power source is up to the task, otherwise you will have problems.

The CC ICE 100 is rated at 5 amps, but I suspect that's not a continuous rating. If I could manage to find some time, and didn't want to mess up a heli that I've upgraded and re-programmed, I'd go do some current measurements between a V2.1 system and a V3.0 system.

The 3GX works fine, by the way. No reason to dump it. It's really disconcerting to continually see "suggestions" to dump Brand X and buy Brand Z as the solution to all that ails. It's what makes an otherwise useful discussion turn into a "mine is better than yours" battle.

In this particular case, the suggestion to dump the 3GX and buy something else actually does NOTHING to fix the underlying problem - an inadequate power source. It actually tells you to put your money in the wrong place and solves nothing.

-----
Dave

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

Team Heliproz

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01-27-2013 04:42 AM  4 years agoPost 7
srgfitness

rrNovice

west chester pa usa

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Constructive advise only

Thanks for the constructive well thought advice. Claiming that the 3gx unit is no good just speaks to credibility. I have two helis running 3gx, one running beastx and another running Ikon. I hate to burst any bubbles but they don't seem that radically different in the air.

When possible shoot first. When that isn't possible shoot fast.

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01-27-2013 02:55 PM  4 years agoPost 8
NQNA

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USA

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It always depends if you have had 3gx units fail. Which I have had.. Just as recent as yesterday.. So I stand by my statement.. Don't use the 3gx.

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01-27-2013 06:22 PM  4 years agoPost 9
srgfitness

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west chester pa usa

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I can send you a fried beastx if it will make you feel better,

When possible shoot first. When that isn't possible shoot fast.

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01-29-2013 07:28 PM  4 years agoPost 10
srgfitness

rrNovice

west chester pa usa

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Maiden flight

Finally got set up done and headed out for maiden. This is the first heli where I actually employed the gov function of the Castle ESC. Worked very well.
The 3gx 3.0 upgrade is incredible. I know we all like to swear by particular brands but I won several fbl systems and with this update the 3gx 3.0 seems as good as any.
The Trex 550E itself flew great. The only factory part I don't like is the battery mount. The stock battery mount is too short to mount the battery confidently when setting cg. The battery certainly feels stable but I would be far more confident with longer mount so that the battery isn't hanging off the end so much and I could get an additional strap around it. Looking at aftermarket options now.

When possible shoot first. When that isn't possible shoot fast.

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03-27-2013 04:45 AM  4 years agoPost 11
willy000

rrNovice

Melbourne,Australia

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Constructive advise only
Thanks for the constructive well thought advice. Claiming that the 3gx unit is no good just speaks to credibility.
I also have a 3GX running V3.0 in my 550 and I think its fine once you have it all setup right

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T-REX 550 › 3gx 3.0 question regarding the Trex 550e
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