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stevehof · 01-25-2010, 06:24 PM

Just got the 3G kit for my 500. I'm using a Castle Creations ICE 75, Hitec 5245mg for cyclic and Futaba 9254 on the tail. The ICE 5 amp switching BEC has been fine so far. Will the 3G unit draw enough extra current to necessitate a separate BEC? Thanks!

HeLiJerSey · 01-25-2010, 06:33 PM

well i would call castle. but if i were you i would buy the CC BEC PRO and call it a day. cost only like 40 bucks. Flybarless system dramatically improves 3D power output and efficiency, resulting in reduced fuel or electricity consumption. to be honest i never did a FBL system. if tell me how the FBL works like will you need a gyro or does the FBL system hook up to the rudder servo??

stevehof · 01-25-2010, 07:13 PM

Quote:

Originally Posted by HeLiJerSey

well i would call castle. but if i were you i would buy the CC BEC PRO and call it a day. cost only like 40 bucks. Flybarless system dramatically improves 3D power output and efficiency, resulting in reduced fuel or electricity consumption. to be honest i never did a FBL system. if tell me how the FBL works like will you need a gyro or does the FBL system hook up to the rudder servo??

The FBL system that is the subject of this thread, the Align 3G, is a 3 axis control so you don't need a gyro. The 3G controls the rudder servo.

HeLiJerSey · 01-25-2010, 07:25 PM

you should be fine. if you elimate the gyro altogether.

steph280 · 01-25-2010, 08:55 PM

nope, you don't eliminate gyro altogether. You actually added a 3 axis gyro, so it works the cyclic servos even harder than before, drawing more power on top the rudder servo.

I run a Koolflight Ultimate BEC and haven't had any issues yet.

stevehof · 01-25-2010, 09:00 PM

Quote:

Originally Posted by steph280

I run a Koolflight Ultimate BEC and haven't had any issues yet.

On a 500 with 3G FBL??

HeLiJerSey · 01-25-2010, 09:44 PM

why dont you just hook up the bec and be done rather then stressin. as long as your bec can handle that current draw.

stevehof · 01-25-2010, 10:26 PM

Quote:

Originally Posted by HeLiJerSey

why dont you just hook up the bec and be done rather then stressin. as long as your bec can handle that current draw.

I'd rather not add another electronic device to the mix unless it is deemed necessary. That's just one more thing that can fail or glitch up something else...

The actual extra current draw of the 3G device might be negligible. However, the servos will now be worked a little harder. I was hoping someone would have some advice based on specific experience with a 3G, Trex 500 and 75A ICE or just good electronic science....

MXRACERX43 · 01-25-2010, 10:31 PM

I'm thinking the same thing. I should have my 3g this weekend. Just got my Ice 75a in today. I am probably going to run an external bec, but man. Starting to cram alot of electronics into a 500.

HeLiJerSey · 01-25-2010, 10:35 PM

i would go CC BEC PRO..hold 20 amps..more than what you need for the price.

steph280 · 01-25-2010, 10:51 PM

Quote:

Originally Posted by stevehof

On a 500 with 3G FBL??

Yes, with a Kontroniks Beat 50-8-30 Optocoupler ESC.

I also run UBEC on my T-Rex 600 with Kontroniks Jazz 55-10-32.

As for ICE, I thought it has a built in switching BEC? Why would you need an external BEC?

Vinger · 01-25-2010, 10:52 PM

Quote:

Originally Posted by HeLiJerSey

i would go CC BEC PRO..hold 20 amps..more than what you need for the price.

Not true on the 20A, see CC's website at 22.2V input you only get 15A max, BUT that's more than enough for a 500.

To be honest I run the same cyclic servos and ICE 75A and have never seen anything more than 3A being drawn by the servos (full size Logitech tail servo) so the ICE's builtin BEC should work perfectly. Adding another regulator just adds another failure point and weight.

Slyster · 01-25-2010, 10:57 PM

I am using the Mikado on a 500 with just the ICE 75. Should be fine I've been told.. and it works thats for sure. I had a 10A BEC for it.. but now sold it.

I do run, however, a 20A Pro BEC on my 550 with the ICE100... although I've been told that might have been fine without too...?

harryboe · 01-26-2010, 02:18 AM

I use the stock Align ESC with build in BEC (5A Burst) on my SK360 FBL setup. I'm running 6V and S9257 all around without any issues for more than a year. I expect the futaba servos to draw more current as they are a bit faster than the Hitecs.

Therefore you should be fine with the ICE 75 build in BEC. At least worth a try.

Stolla · 01-26-2010, 02:32 AM

just do a pitchpump test,i.e move the cyclic and collective as much you can when in thr hold, if you don't get brownout you'll be ok

steph280 · 01-26-2010, 10:28 AM

brownouts are only on Spektrum receivers. Not a valid test if you run Futaba FASST.

Slyster · 01-26-2010, 10:52 AM

Well.. either system using the wrong BEC can have issues. Futaba is not going to fix it if the servos are pulling too much. Something will brown out!

steph280 · 01-26-2010, 11:15 AM

What I read was Futaba FASST can operate down to 2.2 volts. So the most that will happen is the servo getting sluggish. The receiver does not reset (AKA brownout). But that's besides the point of this thread.

I think you will be fine with the build in BEC of ICE. Align has been testing the FBL system with their stock 60amp ESC without issues, I don't see why it would be an issue on the ICE. Just don't do it with ESC that has linear BEC's like the Phoenix series.

01-25-2010, 06:24 PM	#1 (permalink)
stevehof Registered Users My HF Map location Join Date: Jul 2009	Will I need a BEC with my 500 and CC ICE 75? Just got the 3G kit for my 500. I'm using a Castle Creations ICE 75, Hitec 5245mg for cyclic and Futaba 9254 on the tail. The ICE 5 amp switching BEC has been fine so far. Will the 3G unit draw enough extra current to necessitate a separate BEC? Thanks! __________________ Synergy E7, Vbar 5 Pro, BLS255 & 256HV, Hacker Turnado 530 Edition, Rail 716, CC120, WR Sup BEC, Scorp BUG \| Trex 450L, Vbar Pro, MKS 8910A+ on tail, Talon 35 \| Futaba 18mz

01-25-2010, 10:57 PM	#13 (permalink)
Slyster Registered Users My HF Map location Join Date: May 2008	I am using the Mikado on a 500 with just the ICE 75. Should be fine I've been told.. and it works thats for sure. I had a 10A BEC for it.. but now sold it. I do run, however, a 20A Pro BEC on my 550 with the ICE100... although I've been told that might have been fine without too...? __________________ "It's not just a hobby... it's a lifestyle" - Pete ϟ MINNESOTA! Goblin 500 + 700 / SK540 / Jives / DX8 / Quantum / RJX servos / 306b / Deep cycles

01-26-2010, 10:52 AM	#17 (permalink)
Slyster Registered Users My HF Map location Join Date: May 2008	Well.. either system using the wrong BEC can have issues. Futaba is not going to fix it if the servos are pulling too much. Something will brown out! __________________ "It's not just a hobby... it's a lifestyle" - Pete ϟ MINNESOTA! Goblin 500 + 700 / SK540 / Jives / DX8 / Quantum / RJX servos / 306b / Deep cycles

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01-25-2010, 06:33 PM	#2 (permalink)
HeLiJerSey Join Date: Dec 2008	well i would call castle. but if i were you i would buy the CC BEC PRO and call it a day. cost only like 40 bucks. Flybarless system dramatically improves 3D power output and efficiency, resulting in reduced fuel or electricity consumption. to be honest i never did a FBL system. if tell me how the FBL works like will you need a gyro or does the FBL system hook up to the rudder servo??

01-25-2010, 07:25 PM	#4 (permalink)
HeLiJerSey Join Date: Dec 2008	you should be fine. if you elimate the gyro altogether.

01-25-2010, 08:55 PM	#5 (permalink)
steph280 Registered Users My HF Map location Join Date: Oct 2004	nope, you don't eliminate gyro altogether. You actually added a 3 axis gyro, so it works the cyclic servos even harder than before, drawing more power on top the rudder servo. I run a Koolflight Ultimate BEC and haven't had any issues yet.

01-25-2010, 09:44 PM	#7 (permalink)
HeLiJerSey Join Date: Dec 2008	why dont you just hook up the bec and be done rather then stressin. as long as your bec can handle that current draw.

01-25-2010, 10:31 PM	#9 (permalink)
MXRACERX43 Registered Users My HF Map location Join Date: Jan 2008	I'm thinking the same thing. I should have my 3g this weekend. Just got my Ice 75a in today. I am probably going to run an external bec, but man. Starting to cram alot of electronics into a 500.

01-25-2010, 10:35 PM	#10 (permalink)
HeLiJerSey Join Date: Dec 2008	i would go CC BEC PRO..hold 20 amps..more than what you need for the price.

01-26-2010, 02:18 AM	#14 (permalink)
harryboe Registered Users Join Date: Dec 2006	I use the stock Align ESC with build in BEC (5A Burst) on my SK360 FBL setup. I'm running 6V and S9257 all around without any issues for more than a year. I expect the futaba servos to draw more current as they are a bit faster than the Hitecs. Therefore you should be fine with the ICE 75 build in BEC. At least worth a try.

01-26-2010, 02:32 AM	#15 (permalink)
Stolla Registered Users Join Date: Jul 2009	just do a pitchpump test,i.e move the cyclic and collective as much you can when in thr hold, if you don't get brownout you'll be ok

01-26-2010, 10:28 AM	#16 (permalink)
steph280 Registered Users My HF Map location Join Date: Oct 2004	brownouts are only on Spektrum receivers. Not a valid test if you run Futaba FASST.

01-26-2010, 11:15 AM	#18 (permalink)
steph280 Registered Users My HF Map location Join Date: Oct 2004	What I read was Futaba FASST can operate down to 2.2 volts. So the most that will happen is the servo getting sluggish. The receiver does not reset (AKA brownout). But that's besides the point of this thread. I think you will be fine with the build in BEC of ICE. Align has been testing the FBL system with their stock 60amp ESC without issues, I don't see why it would be an issue on the ICE. Just don't do it with ESC that has linear BEC's like the Phoenix series.

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