Originally Posted by skinny
I don't know what year, but Campagnolo solved the problem by putting a small radius at that junction. I'm pretty sure but not positive all Super Record cranks arms had the radiused junction.
Was that revision done before or after the CSPC mandated changes? I have an early '80s NR/SR crankset on my '61 Paramount, and it seems to have the same sharp edge as the earlier crankarms.
Originally Posted by skinny
The fluted/non-fluted arms are not related to the arm/spider failure, and to the best of my knowledge are an aesthetic change only.
Well, according to coelcanth, the removal of the fluting was to combat the pedal-eye failure as a result of toe-straps wearing off the aluminum/causing microcracks on these same cranksets.
Take care,
-Kurt