donald gillies wrote:
> It would be good to know the date-code on the back of this crank, can
> you please post it, Rob? <x> is a 1970's year, (y) is an early 1980's
> year, [11], [22], [33] are 1985,6,7. There are some other codes but
> not for this crank, I believe. If it's a very early crank (pre-BMX)
> we can probably guess that it was anodized in the after-market.
>
> 1970's campy cranks had the flutes milled into the crank arms. I have
> seen some later cranks that had the flutes forged into the crank arms.
>
looks milled to me, the forged flute tapers a bit towards the pedal eye
> It seems possible that the crack originated from the very tip of the
> milled flutes of the crank. This was either the starting or the
> ending point of the milling drill. If this area was not carefully
> polished at the factory, before anodizing, it could have left a
> scratch or a crack that could possibly grow later in the life of the
> crank.
>
The milled surface was quite course, just run your fingernail along! It is were the crack originated as shown in the large pictures
> Personally, I think the actual cause was the crankset reacting in
> revulsion to the clipless pedals, but that's just the retro-grouch in
> me ... :-) :-)
You mean that with the right pedal it would have cracked at the spider base? ;)
-- mvg
Marten Gerritsen
Kiel Windeweer
Netherlands