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Bob Nuckolls misquoted

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user9253

Joined: 28 Mar 2008
Posts: 1908
Location: Riley TWP Michigan

Posted: Mon Aug 07, 2017 3:29 am Post subject: Bob Nuckolls misquoted

Bob, have you read the September 2017 Kitplanes Magazine?  The author of "Electrical, Part 3" has quoted you out of context to make it seem that you recommend two aircraft batteries.  The author also stated that avionics need protection from power surges that occur during engine starting.  And he wrote that hall effect sensors contain an induction coil.  Do they?

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_________________
Joe Gores

rampil

Joined: 04 May 2007
Posts: 870

Posted: Mon Aug 07, 2017 3:28 pm Post subject: Re: Bob Nuckolls misquoted

Hi Joe,



Sad to say, Kitplanes is neither a scientific journal with peer review, nor a major newspaper with several levels of review and fact checking. Favorite flying magazine of mine, though it may be,  it is just a popular press magazine, not a technical journal. It is heavily dependent on advertisers and probably has only one or two people on staff including their excellent editor who actually knows anything in detail about technological issues. 



They are, however, pretty good about printing letters to the Editor with corrections.

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_________________
Ira N224XS

billhuntersemail(at)gmail
Guest

Posted: Mon Aug 07, 2017 4:30 pm Post subject: Bob Nuckolls misquoted

 	  Quote: 	
		   , nor a major newspaper with several levels of review and fact checking. 

Not that fact checking ever matters nowadays... just say'in...  
	


Thanks,  

Bill Hunter  On Aug 7, 2017 4:37 PM, "rampil" <ira.rampil(at)gmail.com (ira.rampil(at)gmail.com)> wrote: 	  Quote: 	
		  --> AeroElectric-List message posted by: "rampil" <ira.rampil(at)gmail.com (ira.rampil(at)gmail.com)>

 

 Hi Joe,

 

 Sad to say, Kitplanes is neither a scientific journal with peer review, nor a major newspaper with several levels of review and fact checking. Favorite flying magazine of mine, though it may be,  it is just a popular press magazine, not a technical journal. It is heavily dependent on advertisers and probably has only one or two people on staff including their excellent editor who actually knows anything in detail about technological issues.

 

 They are, however, pretty good about printing letters to the Editor with corrections.

 

 --------

 Ira N224XS

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=471602#471602

 

 

 

 

 

 

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nuckolls.bob(at)aeroelect
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Posted: Tue Aug 08, 2017 7:34 am Post subject: Bob Nuckolls misquoted

At 06:29 AM 8/7/2017, you wrote:

  	  Quote: 	
		  --> AeroElectric-List message posted by: "user9253" <fransew(at)gmail.com>



 Bob, have you read the September 2017 Kitplanes Magazine?  The author of "Electrical, Part 3" has quoted you out of context to make it seem that you recommend two aircraft batteries. 	


   Hmmmm . . . my first design goal is to figure the

   elegant architecture for meeting anticipated

   missions with the minimum of hardware and

   system complexity. Figure Z13/8 is probably

   suited to task for 98% of OBAM aircraft

   flying . . . and it features only one battery.



   There are considered instances where a second

   battery is useful but I'd sure sift the sands

   of simpler options before making that leap.

   Batteries are a commodity . . . a fragile one

   at that. They're like house plants . . . treat

   them nicely within limits of their requirements

   and they'll serve you well. Bumping those limits

   is deleterious if not fatal to battery performance.

   We use ONE battery because it serves a vital

   role . . . but adding a second one begs a

   careful evaluation for return on investment

   and sweetening the FMEA.



  	  Quote: 	
		  The author also stated that avionics need protection from power

 surges that occur during engine starting. 	




  This individual obviously has not exploited

  the original material on my website.

  

  Here's a piece published back in 1996



  http://tinyurl.com/q5uzw78



 

  I published a similar article in Sport Aviation

  about that time frame. 



 

  	  Quote: 	
		    And he wrote that hall effect sensors contain an induction coil.  Do they? 	


  Some do . . . the more accurate, 'closed loop' sensors

  do feature nulling magnets wound onto the gapped core. The

  sensor assembly includes electronics configured

  to drive the nulling current such that force in the

  gap is maintained at net zero flux.



   http://tinyurl.com/yb8rqoo7



  This same article speaks to open-loop sensors. While

  not as accurate and free of drift they are getting

  better. I keeps some around quick-n-dirty look-see

  on some unknown current . . . or when I want a really

  small sensor mounted right onto a circuit board.



 [img]cid:.0[/img]

   Here's an open loop device that will convert a 200A

   current flow into a +/-2.5v signal.



   A closed loop doesn't have to be huge . . .



 [img]cid:.1[/img]



 

   This little board mounted device is one of my

   favorites . . . VERY linear and low temperature

   drift.



   Bottom line is that they come in both flavors.



   The alternator output sensor on the B&C standby alternator

   regulator is an open-loop device.



   I used to do some writing for Kit Planes but I've become

   somewhat disenchanted with their editorial policy for

   peer review.  Bailed out of Sport Aviation way back

   when for the same reason. See:



  http://tinyurl.com/5hug5



   Kettering opined on several occasions: "There is a great

   difference between knowing and understanding: you can

   know a lot about something and not really understand it."



   In the context of this missive, I would add: "If you

   understand something, you OWN the knowledge. Ergo you

   can also explain it. When you cite the work of others

   as germane to your assertions and conclusions, you're

   kinda obligated to at least provide a hyperlink to

   a source authored by that individual. The author of

   the Kit Planes article would have done himself and

   his readers a favor by offing links to anything

   I have published either here on the List, my website

   or print articles.



   This isn't a contest, it's about doing the best we

   know how to do today and making it better tomorrow.



   Speaking of those lead brick house plants, some

   of my farmer/rancher friends are spending

   kilobux on replacement of batteries that died before

   their time . . . and you thought the last battery you

   put in your car was rather $breathtaking$. I am pleased

   to see that our old friends at Deltran have a solar

   version of the Battery Tender series of charger/maintainers.

   I'm about to try a pair of them out on a 24v John Deere

   road grader.



 

   Bob . . .

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