Vintage BMW Motorcycle Owners

Thanks for the pictures and the comments. I think you are right, a lot of stuff for our bikes sold in Germany comes from cheaper countries, Poland, Turkey, China, just to name a few.

Do you have any tips now? It's a job in my near future. Did you get it nice and tight but not too tight for putting it on?

The R25 has a simple battery powered ignition. No magneto in these. I think you have the Ignition coil connected to 30/51 on the switch plate in the headlight, which is directly connected to the battery, instead of terminal 15/54 which is after the switch, so it will be turned off when you pull the ...

Check if the hole where the seal goes had clean and undamaged walls. If so, install the new oilseal without any RTV or whatever. That stuff is a bit slippery and the seal could easilly slip out again. Those seals are designed to be installed dry on the outside and with a smear of oil on the inner, o...

Well, the BMW /2 crankshafts flex quite a bit at higher rpm's. BMW even had to use the barrel bearing in the R68-R69S because of this. I don't know if a roller bearing would be able to cope with this flexing.

The idle mixture screw regulates the air. Out is more air, thus a leaner mixture, in is rich.

But that really looks like oil. So either valve guides, piston rings or a damaged head gasket.

Average size of a German man in 1960 was 1.79 meter. So there is your answer.

First, your R50 has a magneto ignition. It is totally independent of the battery. I guess your high tension leads are stripped a bit too long, with the copper touching or almost touching the cover where they are connected to the coil. Or it is some silly little thing like you forgot to press down th...

Thanks for the kind words. Regarding the brake, it probably will be a standalone brakepedal with hydraulic actuation of the sidecar brake. The integrated one like it was originaly from Steib would be wunderfull. But they are crazy expensive and I don’t think you can buy spareparts anymore. Especiall...

Next up is the body. Here I really want to make it all from scratch. Just because it should be possible. Without any real experience in this field, I had to purchase some tools and rearrange my little workshop. https://i.imgur.com/kVu2Y6h.jpg I made a wireframe, first the front half of the body. htt...