BMW 2-valve (Franz Pohn)

franzpohn1 franzpohn2

Source pictures: Original pictures from Franz Pohn in my private collection.
Source: “Kopfarbeit” In: Motorrad; Rubrik “Test & Technik”, 3/1986 p. 16-18.
Project ready in 1986. More info.: See also text of letter in “Correspondence” (In German only).
[Classification = Group 6A] = Ducati-like system (= from the 1cil. production; beveltwins and beltdrive 2 cil. generation desmos)