Hi Bruce, I have a set of cranks that came from the Reggio d'Emilia area of Italy, milled just like you described. Mine are likely from the early-mid 70s. Here are some links:
The drive crank, outer face, with milled center and spider arm fluting:
http://tinyurl.com/
Non drive crank, inner face, with milled center.
http://tinyurl.com/
Difficult to perceive the nice, deep channels in the two pics above, The
same depth occurs in all four sides of the two cranks, and a better view can be
seen here:
http://tinyurl.com/
These belonged to an ex pro tour mechanic, but I have no idea how, when, or why they were done, and for what or whom. Just had three different guys riding them on the track a couple of weeks ago, and they didn't break yet. :)
Ciao, Mark Agree Southfield MI USA ~ ~ ~
Date: Thu, 2 Oct 2008 15:09:58 -0400 From: "Bruce Audino" <uomodiolmo@gmail.com> To: classicrendezvous@bikelist.org Subject: [CR]Milled inside of Campy SR crankarms
Hello,
I have a pair of Campy Super Record cranks that are on an '83 Olmo Professionista bicycle. I am not sure if they are original to the bicycle or not, but I will assume they are. There is no way to tell what year they are from (or length without actually measuring) as the inside of the crank arms are milled or "fluted". I was curious if it was common to see this type of milling on Super Record crank arms? I haven't seen this on any other ones, but I can't say that I have seen a ton of cranksets. It is very nicely done and I would imagine cuts some weight off of them as it is fairly wide and deep. I have seen plenty examples of chainring and shifter drilling, but not this. I can post a link to a picture next week when I return home.
Thanks,
Bruce
-- Sent from Gmail for mobile | mobile.google.com
Bruce Audino New York City, NY USA
**************Looking for simple solutions to your real-life financial challenges? Check out WalletPop for the latest news and information, tips and calculators. (http://www.walletpop.com/?NCID=emlcntuswall00000001)