[NSRCA-discussion] Main battery redundant lead for receiver

[Ronald Van Putte]

Yeah.  And I suspect that Keith knows him really well.  

BTW, I have used the "low end two cells " with the Hobby King dual switch/regulator (made my own balance connector lead).  Yes, I know that both batteries get used, because both regulators put out 5.9 volts and I have to charge the 2S-850mah "backup" pack regularly, but it still gives me redundancy in the air.

Ron

On Jan 23, 2012, at 6:13 PM, Keith Hoard wrote:

> I think some dude may have already posted a thread with pictures on the NSRCA website forums?
> 
> Keith Hoard
> Collierville, TN
> khoard at gmail.com
> 
> 
> 
> 
> On Mon, Jan 23, 2012 at 6:09 PM, Chris Moon <cjm767driver at hotmail.com> wrote:
> The "low end" pack in a 10S setup is the one with the neg (black) main power lead going to the ESC input.  This is the pack that you would consider as "channel 1" on the Cellpro or TP chargers.
> 
> The goal is to power the radio from the motor pack to that voltage regulator needs to be higher than the regulator used on the back up pack which can be a 200-350mah 2S pack.  Jim O. came to me with this setup a while back and as he said has been flying it for some time with success.  I am working on a schematic or picture to go on the web site to show the proper hook up of the system.
> 
> Chris
> 
> On 1/23/2012 6:56 PM, John Gayer wrote:
>> 
>> I would like to emphasize that the pigtail from Chris Moon could physically  be plugged into either of the 5s balance connectors which Jim identifies as the "bottom" connector. If your esc is not fully optically isolated on the ground leg and you plug into the "upper" battery, there will be smoke. If there is a BEC in your ESC, there will NOT be isolation. In that case, I suggest that you tag or use nail polish to identify the correct balance connector on each pack as you will be plugging into this balance connector whenever you change batteries. It is also a good idea to use a switch for each power lag and check each leg for power separately as part of your pre-flight process. It is easy to forget plugging in the balance connector when you start using this system plus it is important to confirm that both legs are working before each and every flight. Otherwise you can lose your redundancy before the flight even begins.
>> The Castle HV series without BEC allows you to use either balance connector without any issues.
>> 
>> John
>> 
>> On 1/23/2012 4:25 PM, James Oddino wrote:
>>> 
>>> I've been using this setup for sometime and it is working great.  I have my two cell LiPo charged to 7.5 volts and it is connected to a 6.0 volt regulator into the receiver.  The         cable connected to the balance connector on the "bottom" 5S is connected to a 6.3 volt regulator so it supplies all the current to the system and the 2S pack never needs charging.  I'm using an 800 mAh pack but it could be even smaller.  
>>> 
>>> Jim O
>>> 
>>> 
>>> 
>>> On Jan 23, 2012, at 2:09 PM, Scott McHarg wrote:
>>> 
>>>> Guys,
>>>>    Chris Moon just e-mailed me about some leads that were done at the factory.  These leads run off your balance leads to a voltage regulator and allow your main battery pack to be utilized as a redundant receiver battery.  It is NOT meant to be a primary but it will save 20+ grams if you're running 2 rx batteries.  You still have to run the 2nd regulator for true redundancy but you eliminate the 2nd battery.  These leads are factory made and eliminate the need to make them yourself with the concern about plugging in to the wrong cell.  I know in my article, I was pretty much against doing this as a backup but, with Chris having this made at the factory, he has all but eliminated making a mistake by tying to the wrong cell.  I have the link that I'll e-mail you off-list or you can just go to his website.  I don't want to break the NSRCA list rules by advertising for him even though he advertises with the NSRCA.  The leads are only $3.99 each and are found under the Connectors/Adapters listing.
>>>> 
>>>> Thank,
>>>> Scott
>>>> 
>>>> -- 
>>>> Scott A. McHarg
>>>> 
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