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All Forums >> Radios, Batteries, Clubhouse and more >> RC Radios, Transmitters, Receivers, Servos, gyros >> Radio Manufacturer Direct Support >> Smart-Fly (Quest Engineering) Support Forum >> Batshare Question
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Batshare Question - 11/27/2004 4:50:34 AM   
kingair70


 

Posts: 38
Joined: 4/14/2003
From: Addison, TX, USA
Status: offline 		I am installing the Batshare in a single receiver system. Why are there two output wires from the Batshare? The instructions depict two input wires, and a single output wire. Is one of these connections unused?

Thanks,

Mike
       Post #: 1

RE: Batshare Question - 11/27/2004 2:08:03 PM   
rrritchey


 

Posts: 622
Joined: 9/29/2004
From: Phoenix, AZ, USA
Status: offline 		Mike,
Sorry, I guess the illustration is misleading. It was meant to show the logical connections, not the actual physical connections. Both output leads can be connected to the receiver to reduce voltage drop when high current is flowing. Our regulators also have dual-in and dual-out leads for reduced voltage drop. If you feel you don't need the extra current carrying you can just leave one floating. Please let me know if I need to clarify anything. Thank you.


_____________________________

Robert Ritchey
Owner, Smart-Fly

(in reply to kingair70)
       Post #: 2

RE: Batshare Question - 12/28/2004 11:56:58 PM   
evo50


 

Posts: 4
Joined: 12/28/2004
From: Plano, TX, USA
Status: offline 		I'm finishing my first big bird a Midwest CAP232 80 with way to much $$ in it and want no issues with power problems. So here goes some questions I need help with.

Should I go with the 'batshare' vs. just using two batterys, two regulators and two switches?

If I use the batshare will I need two regulators or one?

I'm using Hitec 5625/5645 servos, should I regulate them at 6.0v or 5.4, the instructions say they work on 6v?

Why is the batshare better than a simple double up on things right to the RX. If both batterys are of the same capacity and voltage then how is the batshare better as using this setup the batterys cannot charge each other?

Is there a system such as the batshare with the regulator built in?

I'm on a budget here my wife has cut me off so any help is appreciated.

Thanks,

Bill

(in reply to rrritchey)
       Post #: 3

RE: Batshare Question - 12/29/2004 12:12:29 AM   
rrritchey


 

Posts: 622
Joined: 9/29/2004
From: Phoenix, AZ, USA
Status: offline 		Bill,
Answering this question depends a lot on the type of battery you are running. If you are running 5-cell packs (NiCd or NiMH) then you can pretty much go simple by doubling everything up to the receiver and run this unregulated. The only danger you run here is if somewhere along one of the power paths you end up with a real short, positive to negative, such as insulation wearing through. This is unlikely compared to a battery going dead. Some people experience servo "chatter" on a 5-cell full charge and the BatShare will help with this. Now, if you are going to run lithiums (ion or poly) you have a completely different situation. You have to run a regulator. You may, mostly likely will, run into a problem where if you hook the two regulator outputs together at the receiver, one side is going to supply most of the current and one battery will discharge much faster than the other. There is no good way to "match" regulators, this is just their nature. So, running lithiums, you are pretty much going to be stuck going through one regulator if you are running a single receiver. This ruins your redundancy but regulators (quality ones) are much, much less likely to fail than a battery pack or switch. I think this should get you started, let me know where I can expand on this answer.


_____________________________

Robert Ritchey
Owner, Smart-Fly

(in reply to evo50)
       Post #: 4

RE: Batshare Question - 12/29/2004 5:28:56 AM   
evo50


 

Posts: 4
Joined: 12/28/2004
From: Plano, TX, USA
Status: offline 		Thanks, so the will a NiMH have this probelm running two regulators
quote:

if you hook the two regulator outputs together at the receiver, one side is going to supply most of the current and one battery will discharge much faster than the other
or is this for only Lihiums you would need to run one regulator. I'm going to run 5cell NiMH's on a single RX.

Bill

(in reply to rrritchey)
       Post #: 5

RE: Batshare Question - 12/29/2004 1:42:13 PM   
rrritchey


 

Posts: 622
Joined: 9/29/2004
From: Phoenix, AZ, USA
Status: offline 		Bill,
Anytime you try to put the outputs of two regulators together they will not share current load. It does not matter if they are 5-cell packs or lithium packs. Since you are going to run 5-cell packs on a single receiver you should be fine running this setup unregulated if you want.


_____________________________

Robert Ritchey
Owner, Smart-Fly

(in reply to evo50)
       Post #: 6

RE: Batshare Question - 12/31/2004 4:35:52 AM   
evo50


 

Posts: 4
Joined: 12/28/2004
From: Plano, TX, USA
Status: offline 		Thanks for all the help Robert.

(in reply to rrritchey)
       Post #: 7

RE: Batshare Question - 4/7/2005 2:33:53 PM   
Bobby Folsom


 

Posts: 700
Joined: 3/11/2005
From: Vicksburg, MS, USA
Status: offline 		Bob, just to clarify what you said in this thread using two Li-ions, two switches and two regulators. The output from each switch goes to one of the two inputs on the BatSwith, each BatShare output goes to its own regulator and subsequently each of the two outputs from the regulator is plugged into the single receiver thus establishing battery/switch/regulator redunantcy..

Is this what you recommend for dual setups?

Bobby
Vicksburg, MS

(in reply to evo50)
       Post #: 8

RE: Batshare Question - 4/7/2005 2:50:40 PM   
rrritchey


 

Posts: 622
Joined: 9/29/2004
From: Phoenix, AZ, USA
Status: offline 		Hi Bobby,
This is a perfectly acceptable way of using the BatShare. Most people use a single regulator and just have battery and switch redundancy but using the two regulators from the output of the BatShare to the reciever input will give you regulator redundancy also. For dual receivers most people separate the two sides completely, battery, switch and regulator per receiver. Let me know if I helped or was just confusing. Thanks,


_____________________________

Robert Ritchey
Owner, Smart-Fly

(in reply to Bobby Folsom)
       Post #: 9

RE: Batshare Question - 4/7/2005 7:34:04 PM   
Bobby Folsom


 

Posts: 700
Joined: 3/11/2005
From: Vicksburg, MS, USA
Status: offline 		Oh yes, Robert (Bob?). Your response was a great help in clarifing what I needed to do. I decided to go with only one receiver on my WH 260 rather than two like I have on my AW 54oT.

Thanks again,

Bobby
Vicksburg, MS

(in reply to rrritchey)
       Post #: 10

RE: Batshare Question - 4/7/2005 7:39:17 PM   
rrritchey


 

Posts: 622
Joined: 9/29/2004
From: Phoenix, AZ, USA
Status: offline 		Hi Bobby,
Great, glad I could help. I go by Bob normally, I just sign Robert. Let me know if you have any other questions.


_____________________________

Robert Ritchey
Owner, Smart-Fly

(in reply to Bobby Folsom)
       Post #: 11

RE: Batshare Question - 1/5/2006 8:03:47 AM   
Zeeb



Posts: 1791
Joined: 11/11/2004
From: Pleasant Grove, UT, USA
Status: offline 		Okay I've read through these threads and I think I've got it.

This will be for a 33% size model with three big digital servos for the tailfeathers, four high speed coreless analogs in the wings, and two standard servos for throttle and choke.

Dual 2800 Li-Ions with dual switches run from switch, to BatShare, to regulators, to receiver there by avoiding the .5 volt drop associated with the BatShare?

This may be a dumb question but I posted on Futaba's forum and don't have an answer yet. I'm assuming you can plug the two power leads from the Li-Ion regulators into a R149DP receiver if two slots are available?

And the other question for a buddy who's got a BatShare but couldn't figure out the two output lead thing. He's got two NiMh's with separate switches to the BatShare and only a single output of the two BatShare leads needs to be hooked to the receiver unless you want the higher amperage capability?

Thanks in advance!

_____________________________

Zeeb

(in reply to rrritchey)
       Post #: 12

RE: Batshare Question - 1/5/2006 2:45:02 PM   
rrritchey


 

Posts: 622
Joined: 9/29/2004
From: Phoenix, AZ, USA
Status: offline 		Hi Zeeb,
If you want to run two lithium batteries you might consider our SuperReg rather than using the Batshare plus a regulator. This unit is compact, light and saves you extra wires. You will need to make Deans to R/C plug adapters to plug into your receiver (we have the parts). This might be a cleaner way to go.

The power on all receivers I know of is bussed across the unit so you can plug a power input into any open slot. In fact, the new PowerExpander II coming out later this year does not plug into the battery input of a receiver at all unless it is shared with a channel. The power goes in through the two channels at either end of the receiver.

You can use one output only of the BatShare but you will have more voltage drop across the single wire and connector. Two connections will give you a higher voltage into the receiver under load and thus you will get more torque out of your servos.

Please let me know if I can answer any more questions.


_____________________________

Robert Ritchey
Owner, Smart-Fly

(in reply to Zeeb)
       Post #: 13

RE: Batshare Question - 1/5/2006 3:08:24 PM   
Zeeb



Posts: 1791
Joined: 11/11/2004
From: Pleasant Grove, UT, USA
Status: offline 		Hi Bob,

Thanks for the quick reply. I've ordered a Duralite Plus IMAC package that I'm waiting for but it's not been shipped yet as far as I know. I was not aware until yesterday when I started looking for a method of hooking up redundant power systems, that your company made all the things you do.

I looked at the SuperReg on your website after reading most of this forum, but your website says it's out of stock. Plus I'm wondering about a system that I have to disconnect the batteries after flying. I understand why it's this way with the failsafe system, but I also read a thread from an individual who forgot to do it and turned his Li-Polys into junk. That's my reservation about that regulator, I'm afraid I might do the same thing...

If they are going to be back in stock reasonably soon, I'll consider that option.



_____________________________

Zeeb

(in reply to rrritchey)
       Post #: 14

RE: Batshare Question - 1/5/2006 3:13:47 PM