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-   -   Twin shock mounting question (http://www.advrider.com/forums/showthread.php?t=873150)

More_Miles 03-24-2013 05:37 AM

Twin shock mounting question
 
Hey folks!

Something that's been bugging me for a while. On my '83 RT, there is a single top mounting point for the left (drivers?) side rear shock.

http://stewie.smugmug.com/Machines/R...DSC_4865-L.jpg

The right (passenger?) side appears to have three!
http://stewie.smugmug.com/Machines/R...DSC_4864-L.jpg

Last year I replaced the clapped out no-name shocks with a pair of new-to-me Hagons. I simply mounted the "new" the same way the "old" went. I've looked at my copy of the Clymer manual, no photos of this side, no mention which point to mount them, etc. They appear to be at the same slope, left to right. I should get off my lazy arse to measure their lengths to make sure. That said, I can't think why you would want one side to be a different length than the other. Wouldn't that make for some funky handling? Or perhaps these aren't even extra shock mounting points but some German engineer's warped sense of humour coming out nearly 40 years later. Where SHOULD I mount the right side shock?

Back to tinkering, waiting for the latest dump of white crap to disappear so I can get back out on sand covered roads.

190e 03-24-2013 06:23 AM

If it's like the R45/65 frames there is only one hole that's usable because there is no corresponding holes to support the inner end of the bolt. You can always put some rubber blanking grommets in them.

http://www.bmwr65.org/htdocs/yabbfil...hock_Mount.JPG

http://www.bmwr65.org/cgi-bin/yabb2/...e=Grommets.JPG

More_Miles 03-24-2013 06:27 AM

Quote:

Originally Posted by 190e (Post 21020811)
If it's like the R45/65 frames there is only one hole that's usable because there is no corresponding holes to support the inner end of the bolt.

http://upload.wikimedia.org/wikipedi...alm_statue.jpg

Once more confirmed I'm an id10t. Just checked and no, there isn't a corresponding inner hole for either the front or back extra hole...

Still begs the question, what are the extra holes for?

Plaka 03-24-2013 04:02 PM

Quote:

Originally Posted by More_Miles (Post 21020824)
http://upload.wikimedia.org/wikipedi...alm_statue.jpg

Once more confirmed I'm an id10t. Just checked and no, there isn't a corresponding inner hole for either the front or back extra hole...

Still begs the question, what are the extra holes for?

Sometimes extra holes have no end use. They are used in the factory for fastening parts to fixtures, in this case maybe a welding/line boring fixture or a jig to fit the subframe to the rest of the bike. You wouldn't use the shock mount holes in the latter case because then the shocks couldn't be fitted.

Or perhaps they are for some optional gear.


In any event, they cost money to make. No way they have no function.


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