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PostPosted: Fri Aug 19, 2011 8:34 pm 
aka Leo Swayer
aka Leo Swayer
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Joined: Wed Jun 18, 2008 7:15 pm
Posts: 6365
Location: Wales.UK
I've got some Hollowtech 1 XT cranks that i want to run on my RM.
I've run them on this bike before and they worked great with an M960 top pull top swing front mech and a 113mm BB(which i've confirmed is the right length).
But i've refitted them now ,as before, and with the 113mm BB i can't get onto the granny ring despite much fiddleing :?
So i thought i'd try a longer BB as i had one to hand(118mm), but then i couldn't get the big ring :? :?
I think possibly the mech is the problem as with the 113mm BB it appears to be restricted by the seattube before it can move the chain over to the granny ring.
So, is a bottom swing mech the answer? or am i just an incompetent bike mechanic? :D :D


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PostPosted: Fri Aug 19, 2011 8:42 pm 
Retro Guru
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Joined: Thu Jun 23, 2011 11:25 pm
Posts: 1787
Location: It's not easy being a dolphin.
Not totally familiar with all this but - top swing mechs with touring triples with shorter BB width on road bikes with 68mm BB shell work - as standard. I personally have never used a top swing; mechanically it looks like there's lot's of gubbins and stuff going on in the wrong place where you simply just want a cage to move....if you know what I mean.


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