Vintage BMW Motorcycle Owners

Parts book has three sizes 135mm (p/n 61118070114), 180mm (p/n 34324066130) and 220mm (p/n 61118070118). Looks like Benchmarkworks has ..114 (135mm) and ..118 (but they have it listed as 180mm). They have a picture.

https://www.mcmaster.com/metal-wire-ties/
Some of these are close.

likely p/n 61 31 8048162 (BenchMarkWorks $190) (Bob's BMW $216) (search for p/n will get you more choices: Omega-OldTimer/Germany,
there is also a screw (p/n ?) and a grommet (61 31 8070198)

I recently bought a switch from BenchMarkWorks. Assuming it is a reproduction and the repo is same as an original... Screw is M2.5 (x0.45 pitch) x 4mm length. I'm measuring the length from under the head to the tip at 3.8mm actual, but assuming that is just tolerance for 4mm length. Head is 5mm diam...

If you are looking at machining a standard fill plug to add vent then also take a look at McMasterCarr.
https://www.mcmaster.com/vent-plugs/
You might be able to get a 1/8" NPT thread into the fill plug.

I may have what flyingtpot is referring (or it's a custom job). I have a 1956 R69 where the final drive has had a vent added by previous owner. Body of 'vent' is aluminum, and the vent hole is about 1/16" dia. I grabbed a piece of wire and stripped it back about 2.5" and fed it into the ho...

Thanks so much. It does amaze me that the machining and positioning are so nice for non-factory. It does raise another question about where someone back in the 60s or 70s (or whenever) might have found a small BMW emblem like this. Thanks again.

Has anyone see this, have one, or heard of this? Whenever I look at image of 55-69 BMWs I'm always trying to look at the engine timing/front covers for a BMW emblem and I have yet to see another (if it was there, the angle of the picture usually would not show it anyways). This is from my 1956 R69. ...