Matronics Email Lists :: View topic - battery cables & Relays 'G's" skunk stink

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

battery cables & Relays 'G's" skunk stink

Matronics Email Lists Forum Index -> AeroElectric-List

View previous topic :: View next topic

Author Message

N6030X(at)DaveMorris.com
Guest

Posted: Mon Oct 02, 2006 8:02 am Post subject: battery cables & Relays 'G's" skunk stink

Anybody have a centrifuge with accelerometer and want to conduct a 

little experiment?



Dave Morris



At 10:07 AM 10/2/2006, you wrote:

 	  Quote: 	
		  



I think it is time for someone with a little authority to clear this 

up. My authority is so little that I have hidden it under one of the 

periods in this posting. A prize awaits the one who finds it.



1) Relay mounting. Type 70 Stancor Rodgers White Emerson Tyco. See:



http://www.alliedelec.com/Images/Products/Datasheets/BM/STANCOR/Stancor_Industrial-Control_5760005.pdf



So the manufacturer says, "mount plunger vertical, cap down". I 

checked into the engineering data on this part and of course the 

corporate conglomeratization has destroyed the engineering knowledge 

that built the part. The manufacturer PROMISED they'd get back to 

me.....It's not DO-160 bubela. And it's only 122 deg F max operating 

temp. Etc. etc. Use the Kilovac EV200 part if you can.



(Yes, I am selling my Powerlink Jr. III now and I am MONTHS late.)



2) G-forces: [CAUTION-Head May Explode]  Jacob Rabinow's Law (not 

that he called it that...). Gracefulness is "when the first, second, 

and third derivatives of the equation of motion monotonically and 

simultaneously go to zero." Which is to say--when the velocity, 

acceleration and impulse (the change in acceleration) smoothly and 

simultaneously go to zero.



So many mysteries--a gyro will be ruined if placed on a workbench 

hard enough to be audible, but will do fine in an airplane doing 

aerobatics or combat. A pencil held horizontal and dropped 12 inches 

experiences G-forces that will destroy an airplane and kill a pilot. 

Curtis mercury-type elapsed-time meters were 12G-rated but failed if 

dropped on a workbench.



Motion is composed of displacement, velocity, acceleration and 

impulse elements. The stiffness of a system determines which of 

these can be ignored in any practical application. Designers and 

engineers have the job of measuring some of these elements and 

constraining the system to prevent the others from becoming 

critical. This has other physical science analogues too.



The exercise is left for the student.



"Everything you've learned in school as "obvious" becomes less and 

less obvious as you begin to study the universe. For example, there 

are no solids in the universe. There's not even a suggestion of a 

solid. There are no absolute continuums. There are no surfaces. 

There are no straight lines."

    - R. Buckminster Fuller



--------

Eric M. Jones

www.PerihelionDesign.com

113 Brentwood Drive

Southbridge, MA 01550

(508) 764-2072

emjones(at)charter.net





Read this topic online here:



http://forums.matronics.com/viewtopic.php?p=65198#65198

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

nuckollsr(at)cox.net
Guest

Posted: Mon Oct 02, 2006 8:08 pm Post subject: battery cables & Relays 'G's" skunk stink

At 05:09 PM 10/2/2006 +0000, you wrote:



 	  Quote: 	
		  



Hello Eric



You wrote:



"So the manufacturer says, "mount plunger vertical, cap down"



I have never taken apart or looked very close at the relay that is being

talked about.


	


   See:



http://www.aeroelectric.com/Pictures/Contactors/S701-1a.jpg

http://www.aeroelectric.com/Pictures/Contactors/S701-1b.jpg

http://www.aeroelectric.com/Pictures/Contactors/S701-1c.jpg

http://www.aeroelectric.com/Pictures/Contactors/S701-1e.jpg

http://www.aeroelectric.com/Pictures/Contactors/S701-1f.jpg



        Bob . . .

      ---------------------------------------------------------

      < What is so wonderful about scientific truth...is that >

      < the authority which determines whether there can be   >

      < debate or not does not reside in some fraternity of   >

      < scientists; nor is it divine. The authority rests     >

      < with experiment.                                      >

      <                            --Lawrence M. Krauss       >

      ---------------------------------------------------------

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

Display posts from previous:

	Matronics Email Lists Forum Index -> AeroElectric-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum