[NSRCA-discussion] Main battery redundant lead for receiver

[Keith Hoard]

Yup, he's a pretty cool dude. . . humble too!!

Keith Hoard
Collierville, TN
khoard at gmail.com

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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>>
>>
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