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Aluminum Filter Capacitors
Steve Davis
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#1

01-07-2020, 10:06 PM
A couple of weeks ago, I bought a box of aluminum electrolytic capacitors from a fellow on "ARF". They were all twist lock and PC mount. I have a few Philco chassis that were missing the filter caps, one I had robbed for the 90 I just restored and a couple that were missing them already. The plan is to gut the cans, re-stuff and modify the mount to the large threaded stud. Yeah, I know aluminum cans are not original on the early Philcos but I figure aluminum cans look better than empty holes.
 [Image: https://live.staticflickr.com/65535/4934...54c3_k.jpg]100_0294 by Steve Davis, on Flickr

I went to the Habitat For Humanity Restore looking for PVC pipe fittings and found these schedule 80 unions for 50 cents each.
[Image: https://live.staticflickr.com/65535/4934...f2c0_k.jpg]100_0290 by Steve Davis, on Flickr

[Image: https://live.staticflickr.com/65535/4934...0438_k.jpg]100_0291 by Steve Davis, on Flickr

I cut the flange of the union down in the lathe to fit inside the aluminum can.
[Image: https://live.staticflickr.com/65535/4934...1e1b_k.jpg]100_0281 by Steve Davis, on Flickr

A PVC "close" nipple was screwed into the flange. First the threads had to be re-tapped because the nipple is now screwed in from the opposite side than the hole was originally tapped.
 [Image: https://live.staticflickr.com/65535/4934...24c2_k.jpg]100_0283 by Steve Davis, on Flickr

[Image: https://live.staticflickr.com/65535/4934...2167_k.jpg]100_0286 by Steve Davis, on Flickr
[Image: https://live.staticflickr.com/65535/4934...081c_k.jpg]100_0287 by Steve Davis, on Flickr
[Image: https://live.staticflickr.com/65535/4934...2a47_k.jpg]100_0298 by Steve Davis, on Flickr

I have not stuffed the cans yet, will do that as I need them, will probably use film caps.

Steve
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#2

01-08-2020, 12:21 AM
Now THATS incredible.. And INGENIOUS!! Icon_thumbup 

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rfeenstra
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#3

01-08-2020, 12:28 AM
Love it! I have a 39-7 missing the 2 caps. Now I know what to do next time I take it apart to clean the push button contacts.
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EdHolland
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#4

01-08-2020, 01:10 PM
Very ingenious - I like that approach very much Icon_smile
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David
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#5

01-08-2020, 09:12 PM
WOW nice work!!!!!
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