 Horn, More than you wanted to know |
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| trojanhorsepower |
 Sep 14 2025, 05:22 PM
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Senior Member  Group: Members Posts: 941 Joined: 21-September 03 From: Marion, NC Member No.: 1,179 Region Association: None  |
None of the horns I have worked. I looked online but couldn't find anything about how they work (no doubt due to my own poor Googling) so I decided to figure it out myself.
In principal the horn works by by using an electromagnet to pull in a diaphragm. When the diaphragm is deformed the steel plates on the back open the points. Once the points are open the diaphragm relaxes, the points reconnect and the magnet turns on again. Here is the process I went through to restore mine. |
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| trojanhorsepower |
Sep 14 2025, 05:28 PM
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#2
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Senior Member Group: Members Posts: 941 Joined: 21-September 03 From: Marion, NC Member No.: 1,179 Region Association: None |
Here is a close up of the dirty point.
 and the points separated for cleaning.  |
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Posts in this topic
trojanhorsepower Horn Sep 14 2025, 05:22 PM
trojanhorsepower The horn is often riveted together, with aluminum ... Sep 14 2025, 05:24 PM trojanhorsepower Once the horn is apart the pieces look like this. Sep 14 2025, 05:26 PM trojanhorsepower I cleaned up and treated the parts with Ospho.
Her... Sep 14 2025, 05:30 PM trojanhorsepower The parts cleaned up and painted
And reassembled... Sep 14 2025, 05:31 PM dtmehall Cool! Nice Work. thanks for the pictures Sep 14 2025, 05:48 PM
914werke Nice job Ive been rebuilding "dead" horn... Sep 14 2025, 07:52 PM |
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