Used my 2 41t rings on several campy arms with no difficulty. The bottom of the tooth profile does impinge on the chainring bolt circle just a tiny bit.
markp
-----Original Message----- From: classicrendezvous-admin@bikelist.org [mailto:classicrendezvous-admin@bikelist.org]On Behalf Of Bicycle Classics inc Sent: Friday, January 19, 2001 4:45 PM To: Tom Dalton Cc: classicrendezvous@bikelist.org Subject: Re: [CR]41t NR rings
A great question - I don't know if the arm needs to be modified to run a 41, but I do know that we sell lots of TA 41's and folks use them without a hitch - usually. Once over the years we sold one to somebody that did find that the ring contacted in a problematic way with the spider - but I think the person simpy filed the spider a bit or perhaps found another Campy arm that wasn't a problem. So, the upshot is that different typical unmodified Campy arms might have variations that help or hinder them in this regard. But, I suspect most clever beavers with a file and 10 min could do the dirty dead and modify there Campy arms with a small groove to mitigate the problem. Now, is there anyone out there that, unlike myself, REALLY knows what they're talking about on this? Thanks, Mike Kone
At 11:04 AM 1/19/01 -0800, Tom Dalton wrote:
>Michael:
>A while back you had a NR/SR crank for sale that had a
>41t inner and a spider that was modified for
>additional chain clearance. My question for you and
>the rest of the CR listers, is this:
>
>Is the 41t ring only usable if you have the modified
>crankarm? Does it depend on the height of the chain's
>outer side plates?
>
>Tom Dalton