Mylar 50's Bumble Bee Capacitors, Not Paper In Oil?????

Discussion in 'Vendor Classifieds' started by jonesy, Nov 19, 2011.

  1. jonesy

    jonesy GLOBAL WIRING GURU MLP Vendor

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  2. FatBoy

    FatBoy Junior Member

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    Wasn't the switch to mylar at the very end oF 1959, at least that's been my understanding. And even some Gibson models of 1960 had PIO caps
     
  3. jonesy

    jonesy GLOBAL WIRING GURU MLP Vendor

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    I don't think there was certain year that they switched over as Gibson was mixing Mylar and Paper in Oil Bees in guitars from the late 50's to the early 60's. Mylar was developed around 1945 so it had been around for quite a while.


    EDIT: in 1960 Gibson did start using the Sprague 160P also know as the "Black Beauty" many of the early version of those caps were Paper In Oil. At some point Sprague determined the acid used in the paper was deteriorating it so they discontinued those caps and went to all Mylar version of the 160P. The 160P's were used by Gibson up until 1972 and then they went to the large dime sized .02 Ceramic disc caps and use those through the late 70's early 1980's
     
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  4. David Collins

    David Collins Senior Member

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    Then there's these -

    [​IMG]

    1961 SG I just had in last week, 1346103 Pots, some resoldering on the volume pots (probably done when the pickups were removed and reinstalled when covers were removed), but the solder joints on the caps and tone pots are all original.
     
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  5. jonesy

    jonesy GLOBAL WIRING GURU MLP Vendor

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    Very interesting to see those ceramic discs in a 61' SG :hmm:
     
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  6. David Collins

    David Collins Senior Member

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    I'll admit it caught me a bit by surprise, but they're certainly original. I've no idea how common it is to find them this early (I don't recall finding ceramics this early before), but hey, they could have simply been short on bees that week.
     
  7. jonesy

    jonesy GLOBAL WIRING GURU MLP Vendor

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    Yeah certainly an exception to what they were using for caps in most guitars at that time. Thanks for posting that pic!
     
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  8. Mookakian

    Mookakian Senior Member

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    A good visual of leakage on a Sprague PIO Bee cap, do not lick clean :D
    [​IMG]

    This guy now reads at .067uf :shock: Should be around .047uf
     

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  9. Mookakian

    Mookakian Senior Member

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    Here is a close up of the Oil Nipples found on PIO Bee's :)

    [​IMG]
     

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  10. cooljuk

    cooljuk Transducer Producer Premium Member MLP Vendor

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    Them's some crusty nips!
     
  11. Mookakian

    Mookakian Senior Member

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    Yeah, they need a sexy nurse sponge bath, prob not been cleaned in 40+ years LOL
     
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  12. bill m

    bill m Senior Member

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    In 1961 mostly ceramics were used by gibson. Here's a pic of another 61 SG/Les Paul. Sorry for my crappy pic as I need a new camera.

    [​IMG]
     
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  13. Mookakian

    Mookakian Senior Member

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    A few of the old gibsons came stocked with CRL ceramics did they not?
     
  14. jonesy

    jonesy GLOBAL WIRING GURU MLP Vendor

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    The SG came out in 1961 and the V & T controls are closer together than in an LP. I wonder if it was more of an issue of the ceramic disc caps fitting into the SG cavity better than the Bees or 160P Black Beauties? The 160Ps were used from 1960-1972 in many Les Paul guitars.
     
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  15. Mookakian

    Mookakian Senior Member

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    Ah, so i ASSUME sprague were the only guys making caps for Gibson to a certain point, makes sense i guess. Ive seen a few with CRL's but not sure if they were added after a bit of solder work:hmm: Anyway thats going off topic...sorry :D
     
  16. 79standard

    79standard Senior Member

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    Oh J*sus, that's funny! :laugh2::laugh2::laugh2:
     
  17. Arzachel

    Arzachel Senior Member

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    thats like buying a 68 corvette and hunting around for an old used oil filter full of sludge to fit because its supposed to make you go faster

    a cap is a cap, 2 conductive surfaces with a dielectric, it charges it discharges a new one does the same as the old one
     
  18. cooljuk

    cooljuk Transducer Producer Premium Member MLP Vendor

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    ohboy. :facepalm:


    Why would you have a '68 Corvette? Just get a new Hyundai. Four wheels, seats, engine, gets you from A to B. Same thing, right?
     
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  19. Arzachel

    Arzachel Senior Member

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    er no thats not at all what i wrote is it ?


    the Corvette has the mojo which is what you're tying to say, big news

    putting a knackered expensive 1968 part into it won't make it function correctly to 1968 spec

    or if you fit a good expensive 1968 part in it won't function any better or have any more mojo than a Corvette with a nice new modern filter

    therefore

    pointless to spend 1,000% more on the old part
     
  20. cooljuk

    cooljuk Transducer Producer Premium Member MLP Vendor

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    If you can't hear the difference, yes it is pointless. I can.

    It's not about specs. It's about the flaws in the old caps that create non-linear distortion which humans tend to find pleasing to the ear.
     
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