Whoa! The nut should not protrude beyond the face of the middle chainring! There should be a counterbore (recess) on one face of the chainring... the outer ring of the nut sits down in this area. Is the middle chainring installed backwards? Take it apart and look for the recessed area.
Hope this helps.
Aldo Ross
Middletown, Ohio
USA
> Hello All,=0A=0AI've installed a Campy triple crank on my '78 Raleigh
> Comp.
> and the chain hangs up when on the small chainring. Here're some pix:=0A
> =0Ahttp://www.flickr.com/photos/ericm/sets/72157602300502794/=0A=0AThe
> chai
> n hangs on the inside nuts from the middle chainring. Is this thing set up
> properly? Do I need to get a special skinny chain? Any help is much
> appreci
> ated. Thank you.=0A=0AEric Meddaugh=0Aenjoying the fantastic fall weather
> i
> n=0ASan Carlos, CA