With a Campy 5mm Allen wrench, and a Campy chainring bolt tool, it is easy as pie.
As for introduction, here is an excerpt, copied from Chuck Schmidt's
Campagnolo Timeline:
>
>1958 - The Record 5-pin cotterless crankset is introduced; 151mm bolt
circle, 44 tooth minimum chainring, pedal dust caps, relieved spider and raised
pedal lip. Also introduced are the Record one-piece alloy, small and large flange
hubs (oval holes in flanges, oil hole clip and open "C" on quick release lever
changed to closed "C"). Patent is granted on hollow chainring bolts with
Allen key hole and crank bolt cover with Allen key hole.
>
Ciao, Mark Agree Southfield MI ~ ~ ~
Date: Sat, 19 Nov 2005 20:14:22 +0000 From: fatcogtom@comcast.net Subject: [CR]evolution of chainring bolts
How did the current chainring bolt come into it's current form? The reason I ask is I've skinned my knuckles for the xxxx,000 th time. Yes, the appropriate way to remove or tighten chainring bolts is to put the chain on the largest ring. But what if you are assembling the rings off the bike, outside of the factories what have all sorts of fixtures to hold the inside nut thingy with 2 slots on either side. Each time, I've wondered who designed this type of nut/bolt for that specific apllication, and why?? And how come there hasn't been a more suitable alternative that would make much more sense? Am I crying over spilled milk?
Tom Martin
Oakland CA