Vintage BMW Motorcycle Owners

Very nice!!!!! Please send more pictures and there is a great group of people here on the forum to help!

Paul,

Bing agency in KS does a really good job with that and I would not trust any any other fix than what he does.

It’s winter, I would send it to him to fix.

Best,

James

Welcome!!! Please share a picture of your motorcycle!

It was hard to see your images. I am on an iPhone. You need to mount the final drive in the Motul and measure the distance between the two flanges. The proper distance is in the Barrington manual for plungers. You also need to know the thickness of the hardy disc you purchase. There are several thic...

Don't the prewar plungers... and the R51/2... have snap rings? Just looked at the parts book for the prewar bikes, and they definitely have snap rings. I think the R51/2 is the same thing. The "/3" bikes have staked crosses. My R 51/2 did have a staked cross and I am quite certain it was ...

One last pint of advice. Don’t overtighten the flanges. Not only will the flanges warp, but it does not let the metal walk or grow as it heats up. They warp because they don’t have room to move. Use a NEW wavy washer to stop the nut from backing off, tighten until the wavy washer is compressed and j...

I also just noticed you have snap rings on yours. I have never seen that on an original driveshaft. Anyone correct me if I am wrong, but mine are all staked. Yours have been upgraded. Not bad, just not the original ones. I would question if the length is incorrect and might be putting undue pressure...

I also just measured some u-joints I have here and they indeed measure 19mm x 48mm. I believe this is what is in my R 51/2 but I did not change my u-joint as it was fine. I suggest you try to get your current one to run straight and if it’s still smooth put it back. I do not think the u-joint is you...

Does your driveshaft have a bulb in it to hold the dust seal? If so it is a later driveshaft. If not then it’s a R 51/2 shaft. The R 51/2 also had a smaller seal and no bump in the driveshaft.

Due to overwhelming suggestion I have added the ability to include the FULL message from the forum in the email that goes to you when a new topic or reply is made to a forum, topic or post you are watching is updated. This new feature is ON by default and if you hate it you can turn it off. Go to: h...