[NSRCA-discussion] Max volts

Mon Mar 1 20:35:17 AKST 2010

Penske and Donohue called it "taking unfair advantage of the rules".

Jim O

On Mar 1, 2010, at 7:45 PM, Dave Burton wrote:

> OK, So I have a question. Is knowingly and purposefully violating the intent
> and letter of the rules to gain a performance advantage called cheating?
> ....... Just asking!
> Dave Burton
> 
> -----Original Message-----
> From: nsrca-discussion-bounces at lists.nsrca.org
> [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of James Oddino
> Sent: Monday, March 01, 2010 7:16 PM
> To: General pattern discussion
> Subject: Re: [NSRCA-discussion] Max volts
> 
> I have the functional concept that solves the rules problem.  Picture a 10S
> pack positive lead wired to the common of a switch with two poles, a piece
> of wire connected from one pole to a pole on a second two pole switch with
> its common connected to the ESC.  Between the other two poles we place our
> 11th cell.  When the 10S pack is above 37.5 volts the 11th cell is bypassed
> and when it is below, like it will be during vertical maneuvers late in
> flight, the 11th cell is put in series to boost the voltage to up to 41.7
> volts.  At no time is the voltage over the spec.
> 
> Having said that, I believe the 10S system provides adequate power with the
> right motor at all times of flight even if the voltage drops to 35 volts.
> 
> Jim
> 
> 
> On Mar 1, 2010, at 8:59 AM, Bob Kane wrote:
> 
>> Going higher and regulating down would be against the rules, the max volts
> is still limited to 42.56. 
>> 
>> Bob Kane
>> getterflash at yahoo.com
>> 
>> 
>> --- On Mon, 3/1/10, krishlan fitzsimmons <homeremodeling2003 at yahoo.com>
> wrote:
>> 
>>> From: krishlan fitzsimmons <homeremodeling2003 at yahoo.com>
>>> Subject: Re: [NSRCA-discussion] Max volts
>>> To: chad at f3acanada.org, "General pattern discussion"
> <nsrca-discussion at lists.nsrca.org>
>>> Date: Monday, March 1, 2010, 9:54 AM
>>> 
>>> Couldn't we go to a higher voltage and
>>> regulate it back down? A contstant 42.56v would be nice!
>>> 
>>> Chris 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> From: Chad
>>> Northeast <chad at f3acanada.org>
>>> To:
>>> nsrca-discussion at lists.nsrca.org
>>> Sent: Sun,
>>> February 28, 2010 8:48:48 PM
>>> Subject: Re:
>>> [NSRCA-discussion] Max volts
>>> 
>>> 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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>>>>>>> NSRCA-discussion at lists.nsrca.org
>>>>>>> 
>>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>>>>> 
>>>>>> 
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>>>>>> 
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