Urgent question 1979~1980 side stand question.

[Tony Smith]

Does the pivot bolt on the sidestand for the 1979!1980 model fit "downward" or "upward"?


Reason for the question is that I urgently need to fit a new bush to the wife's R65/80 and the bolt has had the head broken off at some point. Worse i can see thread on both the top and bottom side, but not enough to really be sure which way it runs.

The 1981 and later are fitted witht he head at the top, but before i start drilling holes in the hope that an ezy-out will work I'd really like to know.

[Tony Smith]

T'is OK I have answered my own question.


The 1979/1980 R65 has a unique side stand - the pivot and mount is the same as /7's but the length is shorter.


That is why the bush and bolt I bought don't fit......
The /7 stuff seems to be NLA so I'm off to the local plumbing shop to find a brass plumbing fitting that can meet Mr Lathe and become a bush.

[montmil]

...meet Mr Lathe.

  Reminds me of Al Pacino: " Meet my little friend." [smiley=rifle.gif]

Finally ! An opportunity to use that gif

[Barry]

Tony,

There is no bolt anywhere on my 79 side stand. There is a pivot pin. #3 in the diagram. and the whole thing just slots together and is cleverly held together by the spring tension. #10 is an M8  screw and #11 a bush from 11/79 to 9/80 so the bush becomes the pivot but I cant see what #10 screws into.
 

[Tony Smith]

Barry


Thanks for that, it is one of BMW's horridly confusing drawings that incorporates the parts from more than 1 revision - if you look 3, 11 and 10 are all shown as going in the same place.

Neither "side" of the side-stand pivot "ears" are tapped with a thread which means that it was almost certainly meant to pivot on either a pin or a double ended bolt.

I rapidly came to the conclusion that over the years a whole mess of parts had gone missing and that someone (probably me) had "Heath Robinson'd" it back together. Lovely wife did remind me that we fitted a new side-stand in the early 90's and had to wait some time for it as BMW had none in stock and had to themselves order ours plus spares from the foundry that supplied them originally.

Anyway, I made a new bush and then adapted a 10mm shoulder bolt by cutting off the head and then cutting around 5mm of thread on the top end (so the top three turns were fully formed) and cutting the original thread down so that  when inserted into the pivot there was three turns protruding. I then cut two 10mm nuts more or less in half and used them to stop the "pin" from going off on its own adventure.

I had to be very careful with clearance on the top side because of the exhaust pipe - another inherited problem, an artifact of recycling the R65 header pipes on the R80 engine - and on the bottom side I had only minimal clearance for the Heath Robinson's alloy plate carrying the 2 non-BMW springs.

If the bits were available I would spend the money and return it to standard, but they are all NLA. The later 1981-1984 system is much, much better, if I were starting from scratch on a 1979~1980 I would buy the later stand, drill out the frame tab to take the later, larger diameter bush and be done with it (whilst making a mental note to grease the pivot any time the exhaust pipes were off (the 1979 frame has no grease nipple.

To my wife's ongoing annoyance she has two "Surefoot" side-stands (she ordered one, got told they were out of stock waited 3 months and ordered again, two stands turned up in consecutive weeks) that cannot be fitted to her bike unless she either modifies the Surefoot or springs for a set of "genuine" R80 header pipes, the adapted R65 ones make the Surefoot impossible to fit.


Anyway, that nicely kissed goodbye to a day for a job I thought would take all of 40 minutes........