A Low level view of the Zundapp KS 601 Engine,
This little Zundapp below is a DB202 200cc Two-stroke motorcycle. This recently sold on EBay for around two thousand dollars. Pretty good price for a complete non running bike.
This is a 30's (?) model Zundapp single. The early models utilized a hand shift transmission.
This Zundapp twin is a KS600 I think. The engine is very similar to the KS 601. This model also utilized a hand shift transmission. These were a "hard tail" rear frame with no suspension. The front is a sprung girder type suspension. Likely a pretty rough ride. But it sure is beautiful.
This is a Zundapp KS800 model I believe. It was a 4 cylinder boxer engine. These are pretty rare and sought after. They demand very high prices. The German Military used a lot of these during WW2.