[R-390] Part(s) wanted (twin electrolytic filter cap)

blw [email protected]
Fri, 28 Dec 2001 22:57:55 -0600


Bill,

Good idea with the reaming or resizing the tube bases. I have also cut a few
electrolytic cans open with my Dremel. I have a large box of new ones that
was given to me, so I have enough practice cans to play around with. Some
can be spread open from the base carefully. You can reseal those bases back
like they were originally by curling the metal rim back down flat on the
base. One other good alternative to super glue is Liquid Solder. That stuff
is putty like and dries very very hard. You can shape it nicely with your
fingers or a tool. I just read somewhere that gasoline dissolves the dreaded
black unkumpuky. 

I'm wondering if cooling holes should be drilled in those electrolytic cans
once the caps are replaced. Would trapped heat be a problem?


Barry


> Try "Bob's Antique Radios" for great boatanchor replacement caps and
> electrolytics.
> 
> http://www.radioantiques.com/supplies.html
> 
> 10uf caps @ 450VDC are fine as tolerance is very wide on these parts.
> 
> I have rebuilt electrolytic cans by slicing them apart just above the base
> with a Dremel tool and cutting wheel, gutting the contents, then fitting the
> void with new electrolytic caps.  I then fit the cut tube over the old base
> (the end of the aluminum shell can be expanded by reaming it with a closed
> set of pipe pliers or similar) and glue it back together with super-glue.
> 
> Most of the time there is plenty of space to hold the new caps inside the
> aluminum can.
> 
> 73 de Bill, AB6MT

>> As most of you know. I am restoring 2 Eico 753 Xcvrs. I am, however in
>> need of a couple of electrolytic r caps, axial leads, twin section 2x8uf
>> @450VDC,
>> 
>> I haven't been able to find an 8 uf in that value, let alone a twin
>> section. The only reason I am putting this out on the boards, is that
>> this is a space-critical item in this unit. I need 2 of them. If anyone
>> can help me out here, please let me know. Otherwise, I will just put 2
>> single section in as a replacement.
>> 73 es tnx de Greg WA3IVX