M!ke, a neighbor of mine in New Ulm had 5 BMW motorcycles, none newer than 1964 and each beautiful. His answer to restoring aluminum--WD40. That simple, same logic as lanolin for leather---it floods out the dirt and provides a consistent finish, voila. Not that I'm sorry that I once polished out the valve covers on the 308 (like I'm not sorry for polishing the water tank in the Goose!), but though its sad, its true, the cool thing in the Mangusta engine bay is not the drive train--you can barely find it under everything--its really just the open tube frame...
Denis, that is one mean application for jackshaft (!) An an interesting exercise in packaging for DeT to have enabled the engine to be just a few inches towards center. One of my favorite Binky episodes is the most recent one--even after 36 episodes of making brackets... The issue they had with their flex shaft (where the inertia of the accessories was tearing it apart and so they built the clutch function on it) was pretty amazing. Thanks for the tip on that channel so long ago--Lee