Chainring bolt help!! (Middleburn RS7)

hamster · Jun 19, 2013

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.

Rampage · Jun 20, 2013

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.

hamster · Jun 20, 2013

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.

MiniNinjaRob · Jun 20, 2013

I'm using a steel inner (I think Shimano). That might be the problem... maybe designed for the thicker Middleburn alloy rings??

Tazio · Jun 20, 2013

Rob Atkin":217hn4rj said:
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.

Rob H · Jun 20, 2013

Just reading this thread: viewtopic.php?f=6&t=226324&start=105

And apparently Middleburn do free spacers:

gtRTSdh":3oasv1ii said:
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

zetecmk2 · Jun 21, 2013

get the file out....it will be snug and tight in 3 mins!!

Chainring bolt help!! (Middleburn RS7)

hamster

Retro Wizard

Rampage

hamster

Retro Wizard

MiniNinjaRob

Tazio

Rob H

Retro Guru

zetecmk2

Senior Retro Guru

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