Centrifugal advance post

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cbclemmens
Posts: 14
Joined: Sun Apr 25, 2021 2:21 pm

Centrifugal advance post

Post by cbclemmens »

On my R 60/7, I just twisted the post off on the centrifugal advance. It broke off at the base of the threads. I have been looking on the parts fiche and can't find it. Does anyone know if it is part of the camshaft? I am probably going to drill and tap it so I can just put a screw in it to hold the advance unit in place.

Anybody have any other ideas?

Craig

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schrader7032
Posts: 7786
Joined: Fri Oct 27, 2006 3:00 am
Location: San Antonio, TX

Re: Centrifugal advance post

Post by schrader7032 »

Another option is to replace the points and condenser with an electronic ignition made by Boyer. It eliminates all of the stock parts and uses a computer advance curve. Rocky Point has some for sale:

https://www.rockypointcycle.com/c-bmw8_electrics.html
Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

cbclemmens
Posts: 14
Joined: Sun Apr 25, 2021 2:21 pm

Re: Centrifugal advance post

Post by cbclemmens »

Actually I have a Dynatech Dyna-III computer ignition on it. That system uses the centrifugal advance assembly to mount the magnet.

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schrader7032
Posts: 7786
Joined: Fri Oct 27, 2006 3:00 am
Location: San Antonio, TX

Re: Centrifugal advance post

Post by schrader7032 »

Right...the Dyna III uses the stock advance...I have one on my /7. I was just providing an option beyond having to drill/tap the end of the cam. I think Snowbum discusses this situation on his website. This website is his discussion about snapping off the tip:

https://bmwmotorcycletech.info/cams.htm
Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

cbclemmens
Posts: 14
Joined: Sun Apr 25, 2021 2:21 pm

Re: Centrifugal advance post

Post by cbclemmens »

And then I managed to break the tap off in the hole.

cbclemmens
Posts: 14
Joined: Sun Apr 25, 2021 2:21 pm

Re: Centrifugal advance post

Post by cbclemmens »

I gave up trying to get the tap out. I glued the point cam to the post with Loctite and it runs. I used the blue Loctite so I can remove it when I need to. Still not running like it should but the timing checks ok. Since I'm running the Dyna III and no points, I think I'll be ok. Some day I'll have to replace the cam, but that can wait.

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