As far as I know, the Mavics were ISO taper...the 631 crank wanted a 114mm spindle generally. Same degree taper as JIS, but starts from a smaller size, so the mavic cranks won't engage as far as is ideal on a JIS bottom bracket. I've used a 631 crank with a shimano bb with no particular problems, about a 110 gives a pretty good chainline, but never with a superbe pro.
Baird
__________________________ Baird Webel Washington DC, USA
On Nov 21, 2006, at 7:09 PM, classicrendezvous-request@bikelist.org
wrote:
> ------------------------------
>
> Date: Tue, 21 Nov 2006 15:48:40 -0800 (PST)
> From: simon bird <simonandonandon@yahoo.com>
> To: classicrendezvous@bikelist.org
> Subject: [CR]mavic bottom bracket
> Message-ID: <20061121234840.47452.qmail@web54706.mail.yahoo.com>
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> Message: 10
>
> i have one of these which i've been thinking of using. i also have
> a starfish (631?) chainset, but may use it with a superbe pro if it
> will work.
> are the tapers ISO = campag compatible or JIS?
>
> simon bird
> london
> uk