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Thread: Horn restoration

  1. #1

    Horn restoration

    Havey Smith did a nice 4 page article on the restoration of horns from the late 356 and early 911. I took mine apart and they were like new inside, so a cosmetic makeover was the only thing I had to do. The horns had beed sitting for 20+ years so I didn't expect them to work before I took them apart. When I was all done........nothing, not even a grunt! Has any one had experianced the insides of one of these early horns?

  2. #2
    Sorry Rick...mine honk, and I leave them alone. But a thought. Instead of looking through automotive sources for a rebuild? Think speakers. Horns & speakers work on the same principle...so maybe? (Just had my ancient JBL home stereo speakers rebuilt..and it worked out well.)
    Paul D. Early S Registry #8 - Cyclops Minister of West Coast Affairs
    "Now, to put a water-cooled engine in the rear and to have the radiator in the front, that's not very intelligent." -Ferry Porsche (PANO, Oct. 1973)

  3. #3
    I give up! 69 horns will be used!

  4. #4
    Rick,,,turn the adjustment screws in and out a few times,,,, it usually helps... if not,,,,,,,,,,,,,, carefully pickup up the horns with your right hand,,,,turn around,,,, then carefully walk over to the scrap bin and toss them!!!

    Robert..

  5. #5
    Moderator Chuck Miller's Avatar
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    I'm with Robert,

    Fiddling with the adjustment screws has always worked for me...
    Chuck Miller
    Creative Advisor/Message Board Moderator - Early 911S Registry #109
    R Gruppe #88

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  6. #6
    I've enjoyed playing with the early metal Bosch or Klaxon horns that BMW bikes used.
    My oldest one is an early Bosch (very similar to a 356 horn if not the same) on a 1955 R69 and wouldn't make any noise before I started on it. I took it apart and found a bad connection and improper postioning of the electromagnet.
    Put it all back together and after a bit of tuning (there are 2 places to tune it) the thing works fine. Not the prettiest sounding horn in the world but it does work. With some fiddling I'm sure I can at least make it into a good tenor.

    Best of luck,

    Tom
    "Be who you are and say what you feel because those who mind don't matter and those who matter don't mind." - Dr. Seuss
    "Experience is the mother of wisdom" - idiom
    "Let them that don't want none, have memories of not gettin' any"- Brother Dave Gardner

    Early S Registry #235
    rgruppe #111

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