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Old 02-07-2013, 11:08 AM   #19
Bill Harris
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Joined: Sep 2008
Location: backwoods Alabama
Oddometer: 4,947
Never ever too old, Charlie.

Many times "new" BMW designs would be evolved from previous parts. On the /2 engine the camshaft is gear-driven and also has a magneto hanging off the front end. The centrifugal advance (etc) is attached via a taper and IIRC there is a multi-step tapdance to getting the ignition set up which involves loosening and aligning things. The pressed-in drive quill makes sense in the context of being a /2 carryover, and makes some sense in that the later "Beancan" designs didn't even use that quill.

We'll see if there is a way to salvage this. Even if the camshaft needs to be replaced, I'm thinking it can be done without engine removal and complete teardown.

Here are links to a couple of /2 cam/magneto Fiche pages from MAX BMW, FYI:

http://www.maxbmwmotorcycles.com/fic...png?v=08102012

http://www.maxbmwmotorcycles.com/fic...png?v=08102012

--Bill
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Bill Harris screwed with this post 02-07-2013 at 11:13 AM
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