Ever noticed how the impossible seems simple once you've already done it? BMW's creation of their very first bike, the R32, seems like a ludicrous feat even 100 years later. Hell, they are still using the same basic layout today. But for designer Max Friz and the rest of the company's engineers, that hard work had just started..., http://www.pipeburn.com/home/2018/02/21/bmw-r47-1928-motorworld.html
Forge the rest of the bike, the dark grey monochrome treatment of the engine and tranny is similar to what I want to do to my 1983 Airhead. Except I want to polish (or satin brushed) the edges of the fins on the cylinders.