[R-390] Cosmos PTO - No Teflon Disk???

[Tony Casorso]

Check out this one. Lots of pictures of the deep innards.

http://www.r-390.com/cosmos.htm

Tony
----- Original Message ----- 
From: "Jon Schlegel" <ews265 at rochester.rr.com>
To: <r-390 at mailman.qth.net>
Sent: Thursday, February 14, 2008 2:40 PM
Subject: [R-390] Cosmos PTO - No Teflon Disk???


> Hi all,
> 
> Just opened a Cosmos PTO expecting to find a Teflon disk as described 
> in "Calibration of the COSMOS PTO"  by Tom Marcotte, N5OFF at 
> http://www.r390a.com/html/n5off_pto.html.  I found no Teflon disk 
> inside.  Is the disk really missing or is Tom using the idea as a 
> visualization technique?
> 
> I see that the slug driven by the cam follower is itself 
> screwdriver-adjustable.  Among other things, no doubt, I can see that 
> this slug's baseline adjustment would affect the sensitivity of the 
> linearization adjustments.  Is there any accepted procedure for the 
> baseline adjustment of this slug?
> 
> Also, the "varnish" on the main coil shows signs of breakdown due to 
> either due to mild corrosion or perhaps some sort of fungus among 
> us.  About 1/8 of the surface of the coil is affected.  Should I 
> attempt to clean/re-coat it or just leave it alone.  If re-coat, then 
> with what?
> 
> This Cosmos unit is mechanically kind of on the edge - some worn 
> surfaces, buggered screw heads, even a bent 370 uuF mounting stud - 
> but probably salvageable.
> 
> 
> Regards,
> Jon Schlegel, WA3MVM
> 
> 
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