Horn restoration

[Rick Cabell]

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?

[pwd72s]

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.)

[Rick Cabell]

I give up! 69 horns will be used!

[glaverbel911]

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..

[Chuck Miller]

I'm with Robert,

Fiddling with the adjustment screws has always worked for me...

[sithot]

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