[NSRCA-discussion] Max volts

[Ron Van Putte]

I keep looking at the voltage curve for 10S vs 11S and see that the  
voltage would be higher at every point, until the 11S pack's voltage  
drops below the 10S pack's voltage out at the end of the flight and,  
because the voltage was higher, the current to develop the same  
wattage would be less, prolonging the 11S's flight time.

Ron

On Feb 28, 2010, at 10:48 PM, Chad Northeast wrote:

> You would be at about 50% capacity at 3.85 ish volts/cell (resting  
> open circuit), so unless you up the capacity you will have a pretty  
> restricted flight time.
>
> Chad
>
> On 10-02-28 9:25 PM, Ron Van Putte wrote:
>> That stirs a wild thought in my brain.  Fully charged packs don't  
>> stay at 4.2 volts per cell very long.  On the other hand, once the  
>> initial charge voltage is burned off by a constant load, the  
>> voltage loss curve "flattens out".  What if you put fully charged  
>> 6S and a 5S packs in series and "burn them down" to 3.869 volts  
>> per cell (a total of 42.56 volts for an 11-cell pack) so they were  
>> legal for use.  Would the voltage of this depleted 11S pack be  
>> higher than a fully charged 10S pack at the end of a typical  
>> flight?  If the end-of-flight voltage might be significantly  
>> higher for the 11S pack vice a 10S pack, it would be worth  
>> investigating, even considering the extra weight of the additional  
>> cell.  Come on you electronic gurus, show me where I'm wrong.
>>
>> Ron Van Putte
>>
>> On Feb 28, 2010, at 10:00 PM, James Oddino wrote:
>>
>>> What comes after ...?  Does it specify a load or any other  
>>> conditions?  Is it measured during the noise test and have a  
>>> minimum value?
>>>
>>> Just stirring the pot, Jim O
>>>
>>>
>>> On Feb 28, 2010, at 5:21 PM, John Fuqua wrote:
>>>
>>>> No its not (assuming we are talking RC Aerobatics).  Try page  
>>>> RCA-2 para 4.1
>>>> which states "Electrically-powered model aircraft are limited to  
>>>> a maximum
>>>> of 42.56 volts.."
>>>>
>>>> -----Original Message-----
>>>> From: nsrca-discussion-bounces at lists.nsrca.org
>>>> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of  
>>>> Ron Van Putte
>>>> Sent: Sunday, February 28, 2010 7:07 PM
>>>> To: General pattern discussion
>>>> Subject: Re: [NSRCA-discussion] Max volts
>>>>
>>>> It's in the general rules, not in the R/C section.
>>>>
>>>>
>>>> On Feb 28, 2010, at 6:50 PM, Jim Quinn wrote:
>>>>
>>>>> Where can I find the rule for max volts?
>>>>>
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