After 40 years of service, the headlight switch on the R90/6 bit the dust. As far as I could tell, the contacts were just completely worn out. I retained the switch in hopes of trying to rebuild it someday as the new switch BMW makes is a little different (also, if anyone knows the diameter of the ball bearing used in the headlight switch to hold positions let me know, after dropping it during it five times, I finally lost it). For one, it has 8 wires instead of 9. The red wire is now omitted which means that you can no longer flash the high-beam when the keys are out of the bike. This was a feature I never used, unless hitting it by accident, but was kinda neat, Max BMW described it as being there to give a signal to a submarine like in an old war movie and I'd like to think that's what it was actually intended for. Something else a little different is the absence of a brown ground wire, instead the green/black wire goes to the ground - I don't know why they did this, but I'm glad I heard about that before installing the new switch as there was an open green/black terminal on the board.
When you go to mess with the /6 electrics this is what you're presented with
Needlenose pliers are essential when working in this area. The wires coming into the headlight at 1 o'clock are the ones related to the headlight switch.
Old switch - note the red wire which is absent from the new switch and the brown ground wire which on the new switch is green/black
New switch. Glad to see it's still being made in Germany by Hella. I was fully expecting to see Made in China or India stamped on it like other new parts bought from BMW.
Kacie Marie knows how to approach working with electrical gremlins
As far as the 1957 R60 goes, I attempted to order new bearings and spacers for the bottom end so I can start getting ready for the engine build. Turns out just about everything I had to order is NLA, not just for North America, but also Germany. I also noticed that BMW now provides a parts search, similar to the microfiche Max BMW offers, but unfortunately only goes back to 1967. I'm hoping this doesn't mean they are going to discontinue making parts for the older bikes. As it stands now I'm faced with hoping Max BMW or Blue Moon Cycles can find me the parts I need, or actually just buying a completely different engine to swap into my case. Either way, I'm not really that psyched. In the meantime, I think I'll start some work on the frame. For one, I have to re-weld the center stand lugs as one has a stress crack and the other is broken off. Once that's out of the way I can take the frame for powdercoat, then get the adapters and new bearings to use a telescopic front end and begin to assemble as somewhat rolling chassis.
Now that fall has reached the northeast there will be plenty of time to work on all these things. The R90 will go back to commuting duties and I'll have more time to dig into the projects. Including fixing my wife's 1954 Chrysler.
Music for the season