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Bosch Horns 1800 1963

posted by  PBL1 on  Wed Mar 7 15:44 CST 2018
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Does anyone know where I can purchase a reproduction Bosch Horn emblem? Mine is a two hole emblem that reads along the bottom of emblem "HO/FSA 12/27" . An excellent photo of one would be great as well so perhaps I can photo copy and print to decal paper.

Thank you,
Peter








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    Bosch Horns 1800 1963

    posted by  jgcoutts on  Tue Jan 12 19:37 CST 2021
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    Don't know if this is too late for you, if you would like a good high res image let me know.









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      Bosch Horns 1800 1963

      posted by  PBL1 on  Wed Dec 31 18:00 CST 1969
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      Thank you, that looks perfect. I ended up making one myself







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        Bosch Horns 1800 1964

        posted by  jgcoutts on  Wed Jan 20 19:39 CST 2021
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        I came up with this solution to replace the rusted horns for my 1800S. Had to do a bit of machining to allow for clearance between the grill and the vibrating surface and on the horn to mounting bracket nuts. Will probably powder coat the grill rather then painted as it is and also will replace the Phillips heads with slot head Fillister machine screws. Don't think I will paint the silver vibrating surface(does it have a real name?) but it and the nuts around the back of the rim are the giveaway.









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          Bosch Horns 1800 1964

          posted by  derek uk on  Thu Jan 21 08:22 CST 2021
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          last visit: Fri Oct 24 12:33 CST 2014
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          Original horn mounts, can be a single arm, are part of the system and amplify the sound. Some of the single arms are made from 3 layers of steel. They help to increase the resonance. The silver part is probably know as the diaphragm.








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            Bosch Horns 1800 1964

            uid 55's pic
            posted by  john sargent on  Thu Jan 21 19:29 CST 2021
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            last visit: Wed Oct 22 09:07 CST 2014
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            I have an original horn from a 1957 PV444. It is mounted, on the right side of the radiator, by a hollow stud which the wires pass through. The hollow stud is in the center of the horn. The other old Bosch horn in my collection has the three layers of steel you mention.
            --
            john








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            Bosch Horns 1800 1964

            posted by  jgcoutts on  Thu Jan 21 11:34 CST 2021
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            Yes the 156mm “Highway” horn uses the mount made up of three layers of rectangular plates bound with space between by two brass bushings.

            These new 125mm “City” horns are shown exactly as my ‘64 1800 had the originals on a single welded steel mount.







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