[Collins] Re: {Collins} 70K-2 PTO

[Dr. Gerald N. Johnson]

On Thu, 2007-11-15 at 17:56 -0500, Tony wrote:
> At 07:04 PM 11/14/07 -0000, Henry Lewis wrote:
> >HELP!!!
> >
> >Whilst disassembling a PTO from a KWM-2 I am refurbishing, I have lost the
> >tiny nylon ball bearing that locates on the end of the shaft.  I am using
> >Jim Miller N4BE's excellent article, but did not read it closely enough!
> >
> >Is there anyone out there who can tell me where I can obtain a replacement,
> >or who might even have one they could part with.  I am completely stuck now.
> >
> >In hopes
> >
> >Henry - G3GIQ
> >
> >.
> >SHARE THE FUN: JOIN THE COLLINS COLLECTORS ASSOCIATION TODAY !
> >      http://www.collinsradio.org/membership/    -paypal accepted-
> >.
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> >
> 
> Hi Henry,
>          First of all, the ball is not plastic. It is made out of Pyrex
> (glass) If it was plastic, you would wear it out in a week.. I also lost
> one in the carpet, but after five hours, found it, whew.. OK.. after that,
> I looked around for a replacement ball like this, and actually, there are
> some bread slicers (i.e., variable condenser) that use the same pyrex balls
> to insulate the rotor from ground.. I did find one, and have it here
> somewhere with the about 8 pyrex balls, and perhaps if I can find it, I'll
> take it apart and perhaps save you some headaches.. Please note, I found
> this bread slicer over 30 years ago, when I took my first "S" line PTO
> apart, (after dropping the first ball) but I think I know where it is.. So,
> cross your fingers, I have you email addy, and if your lucky, I can get you
> one.. Best 73, Tony, WB8MLA

My McMaster-Carr catalog has Pyrex or Borosilicate glass balls. 1/8" are
$5 for 100. Catalog number 8996K12. The price will be higher today.
http://www.mcmaster.com

-- 
73, Jerry, K0CQ, Technical Advisor to the CRA
All content copyright Dr. Gerald N. Johnson, electrical engineer