An early Zundapp Advertisement for the "Autobahn" capable KS500
Engine "ghost" photo. The Cam Gear & Oil Pump Gear are a fiber type material. A well known Zundapp guru tells me these gears last quite a long time. He has seen ones from the 30's still in good usable order.
The "Bing" carbs. Similar to those used on BMW's and other motorcycles.