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What is difficult to see in the photo was a "ball horn" / G: "Ballhupe", like those often mounted on the bicycles of little boys.
A simple mechanical horn was one of the conditions for German approval.
Back then, custom bikes with older model years had a great deal of freedom in every respect...
And a small "Ballhupe" was TÜV compliant, and saved on unsightly, ugly electrical cables that nobody wanted on their chopper.
There were some really crazy BMW choppers back then, but unfortunately you rarely see bikes like that today.
When I regain access to my photo collection, I'll post some photos – incredible machines, all unique pieces, conceived and hand-built to a truly high standard...
Mike (Meep Meep!)
Last edited by Mike1956G; Mar 21, 2026 at 06:49 AM.
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.
Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.
Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.
