BEC vs. Arizona

[Eyefly]

Any of you guys using BECs on your ions. I am thinking of the new herculesBEC to use on 12S. Says it can go to 60V and is 3.5A. I am sick of charging my arizona regulator every fourth flight.

[busted blade]

i too am tired of charging my nimh nor could i justify the weight and expense of a seperate regulator system. 3.5 amps is probably minimal for aggressive 3d. im still waiting for a 5 amp then im in. maybe someone knows what the amp draw can get to for 4 hard working digitals and the gyro?.

[Eyefly]

I thought about using 2 BECs off the same battery. That should give me 6-7 amps in total between the two.

[busted blade]

that might work but i would be conserned about the possibility of some sort of interaction between the two bec's, backfeeding, rfi, etc. no gaurantee they will be willing to share equal load.

[Eyefly]

So any of you guys using a BEC on 12S and a spectrum radio?

[Chachin]

Hello,

I'm using a Duralite 5.1v regulator and a 2S TP 2100mAh ProLite pack (pic below) to power my electronics with great success so far. The regulator is rated up to 7.5amps which should be plenty. I've taken it up to 7 consecutive flights (5min or less each) without having to recharge. I think it should be able to provide about 10 consecutive flights on these 9252 servos. Faster/torquier servos will probably reduce this.

Having said that, I flew my original Ion-X1 for about 100 flights or so on a UBEC hooked up straight to 10S. Never had a problem, but I eventually took it out and replaced it with a 4-cell NiMH since I was getting worried about its life cycle on such high voltage.

Once I switched to Spektrum and 12S, my 4-cell NiMH could not keep up with the power demand. It seemed as if I was losing signal momentarily (not good!!). That's when I decided to switch over to the LiPo/Regulator combo which is performing flawlessly. So far I think this is the best way to go.

What size LiPo pack are you using with your Arizona??
What servos are you flying with?

Chachin..

[ghtracey]

that might work but i would be conserned about the possibility of some sort of interaction between the two bec's, backfeeding, rfi, etc. no gaurantee they will be willing to share equal load.

They don't have to be willing to share, all they need is a common ground. Connect oneBEC as normal to the Rx. Choose which servos you want powered by the other BEC and remove the + pins from their connection to the Rx. Connect those pins through a bus to the + of the second BEC. Ground the second BEC to the first (negative to negative).

I got this from (if memory serves) the JR support section on RCU. It was mentioned as a way to power a Spektrum Rx seperately from the servos so that a voltage drop wouldn't cause an Rx reset.

[Eyefly]

Carlos,

I am using 3 x 9252 0n cyclic, and a 9254 on the tail with a 401 gyro. I am seriously considering making this a flaybarless set-up. I have the Cyclock system so i will be adding 2 CSM 720 gyros.

[r2160]

Hi all

I have been using the Arizona reg with the 2600 liion from fromeco. I only use around 200ma per flight on a tempest 3d. That gives around 8 flights without charging no problem. the 2600 was also lighter than a FP2170 (I think it was) and has more capacity.

3 x 9255, 601, gv1 on a tempest 3d, ys91

Why not just use a pair of these? If you want more than 8 or so flights at the field, set it up so that its easy to remove.

glenn

[Chachin]

Alex, it would be awesome if you go through with the flybarless setup! Please keep us posted on that. I think that will be the final "upgrade" I do to my Ion after I'm done optimizing it for 3D. I got to fly a V-bar'd heli a few months ago and it felt really weird. Maybe it's just a matter of getting used to it. Looking to hear of other alternatives.

Chachin..

[Eyefly]

Carlos,

I have a CSM Cyclock and two 720 gyros I bought to convert a trex 500 to flybarless. It may be too tight of a fit so now I am considering putting it on the ion.

[surfanarchist]

They don't have to be willing to share, all they need is a common ground. Connect oneBEC as normal to the Rx. Choose which servos you want powered by the other BEC and remove the + pins from their connection to the Rx. Connect those pins through a bus to the + of the second BEC. Ground the second BEC to the first (negative to negative).

I got this from (if memory serves) the JR support section on RCU. It was mentioned as a way to power a Spektrum Rx seperately from the servos so that a voltage drop wouldn't cause an Rx reset.

Question, for using two BECs to cover the voltage of a 12S setup could one not simply solder the two BEC inputs together to the 12S source and then, if you have an extra available slot in your receiver, put the two BEC outputs directly to the receiver? Since the bus in the receiver is common you should then have the BEC output voltages in parralel and amps would be devided. I'm very interested in this as I want to move my minijoker to 12S and I don't want to use a seperate Rx battery.

[MrMel]

Question, for using two BECs to cover the voltage of a 12S setup could one not simply solder the two BEC inputs together to the 12S source and then, if you have an extra available slot in your receiver, put the two BEC outputs directly to the receiver? Since the bus in the receiver is common you should then have the BEC output voltages in parralel and amps would be devided. I'm very interested in this as I want to move my minijoker to 12S and I don't want to use a seperate Rx battery.

Yes, at least Western Robotics BEC's can be run in parallel.
Just make sure output voltage is set to the same voltage, else you will burn them.

[Eyefly]

Park BEC can be run parallel as well.