[NSRCA-discussion] Servo wire and battery questions

[Mark Atwood]

Am I the only one on this list working very hard NOT to run with the ³More
than a friend² comment??? Lol...

My question is whether you plan to imbed your rudder servo in the rudder
again!  That was cool...

-M


On 12/13/07 9:56 AM, "Gerald Gallagher" <ggall at bellsouth.net> wrote:

> John are you from the KC Mo. area & know Charlie Reed? IN fact I think you
> were more than a friend of Charlie's.
>  
>  
> Jerry Gallagher
> 
>  
>>  
>>  
>> -----Original Message-----
>> From:  nsrca-discussion-bounces at lists.nsrca.org
>> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of John  Ford
>> Sent: Thursday, December 13, 2007 7:17 AM
>> To: NSRCA  Mailing List
>> Subject: Re: [NSRCA-discussion] Servo wire and battery  questions
>> 
>>  
>> Ed, Troy, Emory,
>>  
>>  
>>  
>> Thanks very much for your help. I will go in that direction.
>>  
>> Ed, I will look for your website, and discuss the reduncdant regulator
>> off-line.
>>  
>>  
>>  
>> Regards,
>>  
>>  
>>  
>> John
>>  
>> 
>> 
>> Ed Alt <ed_alt at hotmail.com> wrote:
>>  
>>>    
>>>  
>>> John:
>>>  
>>> You should not need  any kind of signal buffer.  The main problem with long
>>> leads is  excessive voltage drop due to higher resistance if the wire gauge
>>> is too  light.  Just use 22AWG and also avoid any tin plated connectors and
>>> you  should be fine. Braided wire can be helpful, but isn¹t really necessary
>>> most  of the time.
>>>  
>>>  
>>>  
>>> Re. the use of  either Lithium Ion or Lithium Polymer batteries, yes, you
>>> need a  regulator.  The Jaccio works really well.  I also make regulators
>>> that are adjustable and fill a niche if you have a need for redundant
>>> batteries and want some additional flexibility in the setup.  Either
>>> solution can work.  And you are correct that a 480 mAh pack isn¹t a lot  of
>>> capacity, however with a good LiPo, there ability to deliver current on
>>> demand is more than adequate.  Capacity for some number of flights is  the
>>> bigger question.
>>>  
>>>  
>>>  
>>> The electric  powered pattern models use a very small amount of current in
>>> flight because  of the virtual elimination of vibration from the power
>>> plant, so you will  see guys going all weekend with a pair of 2S480 packs.
>>> I still fly  glow and use a pair of 730mAh packs.
>>>  
>>>  
>>>  
>>> Ed
>>>  
>>>  
>>>  
>>> -----Original  Message-----
>>> From:  nsrca-discussion-bounces at lists.nsrca.org
>>> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of John Ford
>>> Sent: Wednesday, December 12, 2007  11:10 PM
>>> To: NSRCA Mailing  List
>>> Subject:  [NSRCA-discussion] Servo wire and battery questions
>>>  
>>>  
>>>  
>>>  
>>> Hi all,
>>>  
>>>  
>>> Return-to-pattern after a long time  questions...
>>>  
>>>  
>>>  
>>>  
>>>  
>>> Question #1
>>>  
>>>  
>>> I used to use JR servo amplifiers on  servos to eliminate noise and ensure
>>> strong signal over a long servo lead,  especially to the back of the plane.
>>> Few of these, if any, are  available commercially now, so I assume that
>>> there is little need for them  any more? (Was never convinced they served a
>>> purpose to begin with, but I  had never built a plane without them, and
>>> never had a  problem)
>>>  
>>>  
>>> I will be using JR 955 RX and digital  servos.
>>>  
>>>  
>>> Maybe as simple an answer as "never an  issue, regardless of servo wire
>>> length".
>>>  
>>>  
>>> Maybe I should twist my  wires?
>>>  
>>>  
>>>  
>>>  
>>>  
>>> Question #2
>>>  
>>>  
>>> I used to use nothing other than large  SR nicads for the flight pack,
>>> usually 1100mAh.
>>>  
>>>  
>>> I notice that folks are now using  Thunder Power Li-Po batteries, some as
>>> small as 480mAh, and several  around 800mAh.  Doesn't seem to be much
>>> capacity to run six  digitals.
>>>  
>>>  
>>> I assume there is a Jaccio regulator to  cut it down to 5V or so. Are Li-Pos
>>> reliable enough that only one cell is  used, or are some folks using a
>>> SmartFly dual battery regulator that ignores  one battery if it should fail?
>>>  
>>>  
>>>  
>>>  
>>>  
>>> I appreciate any calibration on  what the "standard" setup might be.
>>>  
>>>  
>>>  
>>>  
>>>  
>>> Thanks,
>>>  
>>>  
>>>  
>>>  
>>>  
>>> John
>>>  
>>>  
>>>  
>>>  
>>>  
>>>  
>>>  
>>>  
>>>  
>>>  
>>>   
>>>  
>>>  
>>> 
>>>  
>>>  
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>>> Search. 
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>>> _______________________________________________
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>>> NSRCA-discussion at lists.nsrca.org
>>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>> 
>>  
>> 
>>  
>> 
>>  Never miss a thing. Make Yahoo  your homepage.
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> 
> 
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