[NSRCA-discussion] Spektrum AR9100 RX

Sat Feb 16 16:58:00 AKST 2008

The Vampowerpro solution:

http://vampowerpro.com/store/Accessories!Regulators.htm

Ron Van Putte

On Feb 16, 2008, at 7:43 PM, Ed Alt wrote:

> Or the Tech-Aero solution :)
>
> http://www.tech-aero.net
>
>
>
>
>
> From: johnfuqua at embarqmail.com
> To: nsrca-discussion at lists.nsrca.org; vicenterc at comcast.net
> Date: Sat, 16 Feb 2008 18:57:33 -0600
> Subject: Re: [NSRCA-discussion] Spektrum AR9100 RX
>
> another solution to dual batteries is Vanpowers dual batter voltage  
> regulator
>
> http://vampowerpro.com/store/pid_214.htm
>
> From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca- 
> discussion-bounces at lists.nsrca.org] On Behalf Of Ed Alt
> Sent: Saturday, February 16, 2008 8:09 AM
> To: vicenterc at comcast.net; NSRCA Mailing List
> Subject: Re: [NSRCA-discussion] Spektrum AR9100 RX
>
> Vince:
> It's a near certainty that they designed it to isolate the battery  
> inputs with separate, redundant FETs to switch them on/off, beause  
> if they did not,  it would most likely mean that the batteries  
> would be sharing a common internal bus.  You can get away with that  
> with NiCad, NiMH packs and also with LiPo's that happen to be  
> evenly matched and evenly charged.  However, it's a bad idea with  
> LiPos because there is too much of a chance that someone would make  
> a mistake and "poof".  So even without opening one up or drilling a  
> Horizon tech for details, it's a pretty safe bet that they've got  
> isolated inputs that also provide switching redundancy.
>
> I plan to get one at some time soon and I can figure it out without  
> even opening it up.  I don't expect any issues.
>
> Ed
>
>
> From: vicenterc at comcast.net
> To: nsrca-discussion at lists.nsrca.org; nsrca-discussion at lists.nsrca.org
> CC: ed_alt at hotmail.com
> Subject: Re: [NSRCA-discussion] Spektrum AR9100 RX
> Date: Sat, 16 Feb 2008 13:29:29 +0000
>
> Ed,
>
> You just asked the question that I wanted to ask.   How this RX  
> handle one battery failure?  I think the premium cost will make  
> sense if this RX really has that feature already as you described  
> (plus the soft switch).  I think we could save a lot of weight  
> replacing the heavy duty pig tails and use this RX for pattern.   
> The information in the web site is not clear to me.  Probably Troy  
> can help us to find this information using his contacts.
>
> --
> Vicente "Vince" Bortone
>
> -------------- Original message --------------
> From: Ed Alt <ed_alt at hotmail.com>
> Vince:
>
> Receivers usually have their own voltage regulation for the  
> receiver / decoder circuitry, but pass the voltage level at the  
> input directly to the bus that the servos are on.  The main  
> difference with the AR9100 re. power management is that has a much  
> more robust connector system to handle high current loads, and  
> ofcourse it has a softwitch.  That amounts to adding a power FET(s)  
> of some type that's controlled by the on / off switch.  Having  
> never seen one (yet), I would hope and assume that they have at  
> least a pair of FETs feeding a common output bus, one each for each  
> battery input so that if one fails, things keep running on #2.
>
> The thing is, for Pattern applications, you already have a dual  
> regulator arrangement that does what you need.  The AR9100 adds no  
> particular advantage and as Troy points out, it's bigger & heavier  
> than it needs to be.  For a large gasser with a dozen or so thirsty  
> servos, it's a g ood idea.  This is mainly because it eliminates  
> the "choke point" current limitation of the standard servo  
> connectors that other receivers have for bettery connections.
>
> Ed
>
>
> From: vicenterc at comcast.net
> To: nsrca-discussion at lists.nsrca.org
> Date: Sat, 16 Feb 2008 12:39:28 +0000
> Subject: Re: [NSRCA-discussion] Spektrum AR9100 RX
>
> Troy,
>
> The reason I would like to try the AR9100 RX in my pattern planes  
> is that I am using two LiPo 910 mah now.  I like the idea to have a  
> backup battery.  Yes, I will need to use a regulator because of the  
> servos but it appears that the RX does not need regulator.  I know  
> that I don't need the heavy wire for the application.  It will be  
> nice that they make one with JR/FUB plugs.
>
> I was thinking that I can replace the wire with pig tails my self.   
> For sure I will go ahead and get one AR9100 for my big gasser.
>
> What is the difference between 921 and the 9000?  I guess is just  
> brand-name but want to make sure before investing.
>
> Thanks,
>
> --
> Vicente "Vince" Bortone
>
> -------------- Original message --------------
> From: "Troy A. Newman" <troy_newman at msn.com>
> Vince,
>
> the 9100 RX is designed around High current draw applications. Our  
> models don't really require that. The RX is heavier than the 921 or  
> 9000 RX's and part of that is the large battery leads serving the  
> RX. I suppose you could use it but you are not going to be gaining  
> much. Its designed around the larger applications that are 33% plus  
> or in things like Jets with a large number of servos with higher  
> stress applications.
>
> Our pattern models are drawing power in the 1.5-2amps max...this is  
> peak and worst case usually. I have done some testing to make sure  
> I'm carrying a good battery supply. Using a 1650nimh or 2300nimh on  
> 4.8V is working for me in even the Bipes...Another good solution is  
> the Jaccio regulator with a lipo or Li-ion at about 2000-2400mah  
> capacity....
>
> The 9100 RX is designed around models that might be using (5-6)  
> 8711 servos or even more...and could be pulling upwards of  
> 2-3-4amps or more.
>
> At these currents and loads the normal RX switch and lead from a  
> switch to the RX is not sufficient to carry these high currents for  
> very long....so the 9100 RX is a solution to this application as it  
> has large 16ga wire leads for power into the RX. This adds benefit  
> in the high current applications but not really anything to our  
> pattern models...other than weight.
>
>
> I'm flying the 9000 and 921 in all my models now. Would not go any  
> other way.
>
>
> Troy Newman
> Team JR
>
>
> ----- Original Message -----
> From: vicenterc at comcast.net
> To: NSRCA
> Sent: Friday, February 15, 2008 6:04 PM
> Subject: [NSRCA-discussion] Spektrum AR9100 RX
>
> Hello all,
>
> Just would like to know opinions on this product. Any one using it?  
> I like the idea of the two batteries input and the soft switch.
>
> http://www.horizonhobby.com/Products/Default.aspx?ProdID=SPMAR9100
>
> Thanks,
>
> --
> Vicente "Vince" Bortone
>
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> --Forwarded Message Attachment--
> From: troy_newman at msn.com
> To: nsrca-discussion at lists.nsrca.org
> Subject: Re: [NSRCA-discussion] Spektrum AR9100 RX
> Date: Sat, 16 Feb 2008 07:11:03 +0000
>
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> --Forwarded Message Attachment--
> From: ed_alt at hotmail.com
> To: nsrca-discussion at lists.nsrca.org
> Subject: Re: [NSRCA-discussion] Spektrum AR9100 RX
> Date: Sat, 16 Feb 2008 13:07:31 +0000
>
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