Vintage BMW Motorcycle Owners

You do not understand the function of the slide needle. The main & needle jet controls the total amount of fuel delivered. The slide needle controls when, (in conjunction with the slide) and how much fuel one gets. Also, and important thing to remember. The Germans count the 4 four holes in the ...

The standard high USA bars, with the cross piece, uses longer cables. The standard side car bars, while being just as wide, are low bars. They s/c bars use the same long cables as the USA bars. If you aim is to have lower bars, but not more narrow bars, that is the way to go. I put my R50S together ...

There are different throttle cam profiles, with the chain. If I remember correctly, one can install a /5 throttle cam, that has a much more aggressive cam profile, that pulls the chain much faster and will fit the earlier throttle. This will eliminate the need to rotate the throttle grip further to ...

I have seen this problem before. The greater the load the bike is forced to deal with, (like a sidecar) can cause this "slippage" you speak of. The input shaft has a spring loaded cam arrangement to lessen drive like shock when you suddenly accelerate or de accelerate. #4 and $5 in the dra...

The original bosch plugs are no longer made. And their equivalent in NGK are no longer made. ND plugs are still available in the correct heat range, and so are Beru German plugs When I owned Bench Mark Works, this is the plugs we had for /5 /6 /7 12 12 1 267 485NGK sparkplug NGK BP5ES same as Bosch ...

Andrew, OT as you should know by now, is TOP DEAD center, and is marked OT so you can set the valves. It has no other function. Remember, you can set the valve clearance only on the cylinder that is at OT on the compression stroke . You must turn the engine one revolution (360 degrees) to set the va...

Without removing the timing chain cover, you are not going to be able to make sure that the generator sprocket is dead center in the same plane that the cam and crank sprockets are. That is why there are different thickness gaskets to put between the generator body and the case. If the generator spr...

Understand this: Aluminum rims, are not nearly as strong as chrome steel rims. Needless to say, a s/c rig does not lean in corners. All that weight of bike and sidecar puts a tremendous side load on the rims in corners. You might get away with it for a period of time, but eventually, the spokes will...

Here is a photo of how it is supposed to fit. This is my 1954 R68. There is a captive nut welded into the muffler in the notch, that the lower pinch bolt of the plunger screws into. I don't know what you have going on, but the photo you posted is not right.

Grant, you said: how the heck are ya ? I hoped that you would eventually see my post and tell me the solution... but it is summer and we all have things to do. Just staying cool down there in the deep south must be a challenge for you these days!! THAT is what Air Conditioning is ALL about! :lol: No...