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Micha
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Joined: 10/12/2007
Posts: 255

With regards to my last post -
http://www.vintagebmw.org/v7/node/15293
I had some time last evening to examine all the basket with the rear drive parts in it after cleaning, and I found that instead of the needle bearings for this driving dog, these bronze slide bearing were installed. I know that the bike run this way for years. What is your opinion? Are these original rare one that were an option for the factory to be installed for a short period, or is this a previous owner solution?

  • 20180629_124028_resized.jpg
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Michael Steinmann
R51/3 1952
Engine Nr. 529466

Micha
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Joined: 10/12/2007
Posts: 255
Or shell I just run Raspberry

Or shell I just run Raspberry juice inside the rear drive and that's it?

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Michael Steinmann
R51/3 1952
Engine Nr. 529466

avi
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israel
Joined: 01/08/2014
Posts: 132
This is abronze bearing that

This is abronze bearing that was on the prewar -R51,R61,R66...
basically the rear drive as the post war.maybe the complete final drive on your bike is a prewar.

Micha
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Joined: 10/12/2007
Posts: 255
Hi Avi, Thanks for your

Hi Avi,
Thanks for your reply, interesting point and you are probably right.
All the rest of the parts are correct for this bike, so I think that it is only these slide bearings that are out of line here.
The rear drive housing has casting number:
251 1 66 801 0
KN

Anyway, I will leave it this way: It had traveled like this for decades and it will last for another 2, 3 or 10...
I will fill it up with quality 90 grade oil and that's it (after replacing shims, gasket, retainers, bearings etc.)
You seem to be familiar with these models, what model do you own?

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Michael Steinmann
R51/3 1952
Engine Nr. 529466

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