[R-390] Busted mechanical filters

ToddRoberts2001 at aol.com ToddRoberts2001 at aol.com
Sat Sep 30 22:41:38 EDT 2006


In a message dated 9/30/2006 10:07:59 PM Eastern Standard Time, 
muttman at charter.net writes:
I ran into the same problem with the foam so I set the filters aside until I
found foam.  Well, the're still sitting in a box waiting for foam, and I've
moved on to other projects.
Ifanyone wants them emailme and you can have them for priority postage. $4.80 
I
think.

Buzz

I don't think repacking the mechanical filter with foam is necessary or even 
desirable. After all the filter was working for years with a gooey mess inside 
that used to be the foam. New foam may run into a similar problem 30+ years 
down the road. I believe the deteriorated foam may be corrosive and may be a 
factor in the thin wires breaking inside. The filter I took apart one time had a 
greenish-looking corrosion around the spot where one of the thin wire leads 
broke, where the copper was bare. I would just reassemble the filter with those 
supporting discs on each end. If those are deteriorated perhaps a set of new 
supporting discs could be punched out of some thick felt material that would 
act like a shock absorber. The one filter I repaired years ago I put back 
together without foam and it has worked fine ever since. 73 Todd WD4NGG


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