Re: Contactor Controller Contacts

["Tom Peterson" <topper@infowest.com>]

----- Original Message -----
From: "Lee Hart" <leeahart@earthlink.net>
To: <ev@listproc.sjsu.edu>
Sent: Friday, October 26, 2001 9:29 PM
Subject: Re: Contactor Controller Contacts


> pam searle wrote:
> > I burnt the f/r solenoid contactor on my Citicar... aluminum tube...
> > two doughnut shaped pieces of .050" 2024 T3. I used a piece of tube
> > 2.2" long and put the two doughnuts on the ends of the tube to make a
> > spool... In a few minutes I had it all wound.
>
> Great! Only one problem. The aluminum spool acts as a shorted turn, and
> will make the solenoid slow to pull in and drop out. This in turn means
> the contacts will open and close slower, and so burn and arc more.
>
> Spools should either be non-conductive, or cut a slot in them so the
> metal doesn't form a complete closed loop.
> --
> Lee A. Hart                Ring the bells that still can ring
> 814 8th Ave. N.            Forget your perfect offering
> Sartell, MN 56377 USA      There is a crack in everything
> leeahart_at_earthlink.net  That's how the light gets in - Leonard Cohen
>
I was at my daughter, Pam's, when I sent the message on her computer.  Does
the slot have to be in the end pieces (doughnut shaped sheetmetal)? And does
the slot have to be the full length of the tube?  Thank you for the
information.  You probably saved my contacts.  Tom Peterson