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PostPosted: Wed Jun 19, 2013 4:41 pm 
Old School Grand Master

Joined: Tue Oct 09, 2007 1:55 pm
Posts: 8204
Location: New Forest, UK
It wasn't short ones I used - just some others that were slightly less long. I looked at a short bolt, but only about 3 threads would engage with the spider, which is definitely too few.

I'd just file bolts down or take a quick trip to my LBS.


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PostPosted: Thu Jun 20, 2013 2:30 pm 
retrobike rider
retrobike rider

Joined: Thu Apr 17, 2008 1:24 am
Posts: 7562
Location: Manchester
Turn the granny ring around so that the bolts don't fit in the recess but are flat with the outside of the granny ring. Assuming the chain will still engage properly.


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PostPosted: Thu Jun 20, 2013 2:35 pm 
Old School Grand Master

Joined: Tue Oct 09, 2007 1:55 pm
Posts: 8204
Location: New Forest, UK
Hmm, maybe that's it. I was using a steel (Shimano) inner. If it was an aluminium one it would have been thicker, even accounting for the shallow counterbore.


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PostPosted: Thu Jun 20, 2013 3:01 pm 
Windmilling for a Scotch Egg
Windmilling for a Scotch Egg
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Joined: Tue Feb 15, 2011 10:27 am
Posts: 4840
Location: Huddersfield, West Yorkshire
I'm using a steel inner (I think Shimano). That might be the problem... maybe designed for the thicker Middleburn alloy rings??


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PostPosted: Thu Jun 20, 2013 7:14 pm 
MacRetro rider
MacRetro rider
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Joined: Sat May 22, 2010 7:25 pm
Posts: 4977
Location: Edinburgh
Rob Atkin wrote:
I'm using a steel inner (I think Shimano). That might be the problem... maybe designed for the thicker Middleburn alloy rings??


More than likely that. My RS7s have all Middleburn rings and there were no problems at all putting them together. Apart from trying to find the right sodding Loctite that is.


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PostPosted: Thu Jun 20, 2013 9:50 pm 
Retro Guru

Joined: Tue Dec 04, 2012 6:15 pm
Posts: 523
Just reading this thread: viewtopic.php?f=6&t=226324&start=105

And apparently Middleburn do free spacers:

gtRTSdh wrote:
Ps) A few pages back it looks as though your granny ring is facing inside out, but as middleburn provided spacers FOC very good service there, I guess it must be something else.


Might be a solution


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PostPosted: Fri Jun 21, 2013 12:18 am 
Retro Guru

Joined: Sun Jun 20, 2010 4:39 pm
Posts: 1455
get the file out....it will be snug and tight in 3 mins!!


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