Urgent help with setting up durace front mech

mpatts
mpatts Posts: 1,010
edited March 2013 in Workshop
i'm doing the huntingdon sportive tomorrow, and have borrowed a geared bike from a mate. The front mech was a bit wonky, so i have adjusted it.

I've read a million guides, and it says:

1) In small ring, adjust inner cage to .5mm of chain, take up slack in cable and tighten

this all goes well....

2) Put in big ring and adjust...but it won't go into big ring. If I tighten manually, then it either feels too tight (and won't 'double click), or too loose.

What am I doing wrong? Apart from trying to do it myself that is!
Insert bike here:

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