You may have already thought of this, but we use to quite frequently back in the old days put a 1mm spacer between the fixed cup and the bb to get more clearance.
Mike Howard Santa Fe Springs CA
On Sun, May 24, 2009 at 1:22 AM, Mark Battley <mark.battley@xtra.co.nz>wrote:
> Hi again,
>
> My late 50s Frejus has a Magistroni cottered crank:
>
> http://picasaweb.google.com/
> 4
>
> The bottom bracket is branded Frejus, but looks similar to this Magistroni:
> http://www.blackbirdsf.org/
>
> No surprise there since apparently Magistroni produced components for
> Frejus.
>
> The puzzle is that clearance between the crank and the chainstay is very
> tight.
> The crank has to be set slightly out from the end of the BB spindle (as in
> the
> first link above) or the chainring bolts clip the chainstay.
>
> Frame BB shell is 70mm, BB spindle is 127mm. According to
> http://www.blackbirdsf.org/
> spindle
> available.
>
> The crank and BB were on the bike when I got it, all I've done is take it
> apart
> and put it back together again. And yes, the BB spindle is the correct way
> around...
>
> Has anyone else had similar clearance problems on a Frejus?
>
> Any suggestions?
>
> I also had a problem with the crank shifting sideways on the spindle while
> riding, but suspect that was a combination of reusing damaged cotter pins
> and
> riding it far enough before retightening the cotter (blame the idiot who
> put it
> together...).
>
> Thanks,
>
> Mark Battley
> Auckland, New Zealand