Chainring bolt help!! (Middleburn RS7)

[MiniNinjaRob]

I am installing a RS7 cranks but I've hit on a snag with the inner chainring bolts. Standard ones are too long as they are bottoming out before they tighten the granny ring onto the crank. I can't see any shorter bolts for sale anywhere (not done an exhaustive search yet though).
The spacing between the chainrings seems to be ok without any washers - is that correct? Or do I need washers?

 

[Rob H]

Not had any problems with my RS7s, what bolts are you using? I used Middleburn bolts, perhaps your bolts are slightly longer. I've had problems in the past with bolts being too long on a set of raceface cranks.

 

[drystonepaul]

For shorter bolts you can use singlespeed specific ones. Available here amongst other places: --> http://www.charliethebikemonger.com/cha ... -204-c.asp

Not sure why standard bolts would be bottoming out though Rob. The bolts cold be longer than usual or you could be missing spacers.

 

[MiniNinjaRob]

dp

 

[MiniNinjaRob]

Do I need spacers then? I have loads of what appears to be standard length bolts and they are too long.

 

[NeilM]

What are they bottoming out on?

On my RS7's the tapped hole runs straight through the spider, so any excess thread is seen from the outside.

Are we talking middle, or granny ring here?

 

[MiniNinjaRob]

Granny ring.

 

[NeilM]

Don't the bolts just go straight through the spider?

Of course you may have a different spider to me, mine is 94 / 58.

 

[hamster]

I came upon this with my 94/58 spider, which had blind holes for the inner. Fortunately I had some other bolts in the toolbox and used them. I think there's about 1mm difference in length that does it - it was almost (but not quite) tight on the ring.

 

[MiniNinjaRob]

I came upon this with my 94/58 spider, which had blind holes for the inner. Fortunately I had some other bolts in the toolbox and used them. I think there's about 1mm difference in length that does it - it was almost (but not quite) tight on the ring.

That's exactly the same amount as me, about 1mm.

Short bolts seem to cost a fortune though. :-(