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31-05.-2008, 05:12 AM
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#16 |
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Guest
Posts: n/a
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Re: Campy CDA crank date code
<carlfogel@comcast.net> wrote in message news:m4h0445p2g6t4722gj1kidasnoe00at039@4ax.com... > On Fri, 30 May 2008 05:22:54 -0700 (PDT), "Qui si parla > Campagnolo-www.vecchios.com" <peter@vecchios.com> wrote: > > >On May 28, 10:38 pm, A Muzi <a...@yellowjersey.org> wrote: > >> >> "* * Chas" <verktygj...@aol.spamski.com> wrote: > >> >>> I picked up a Campy Croce D'Aune gruppo last week. The date code on the > >> >>> crank arms is 41 in a square. I haven't been able to find what year that > >> >>> translates to. > >> > carlfo...@comcast.net wrote: > >> >> Could the "41" be just the minimum number of teeth? > >> >> "1967: The Record crankset is changed to a 144mm bolt circle (41 tooth > >> >> minimum) from the previous 151mm bolt circle (44 tooth minimum)." > >> >> http://www.campyonly.com/history/timeline.html > >> Hank wrote: > >> > That's unlikely, since the CDA crank had a 135mm BCD, like all Campy > >> > full-sized doubles from C-Record onwards. Rings were available as > >> > small as 39t (didn't TA make a 38?). > >> > >> 38t SR-Sakae and later TA for the 130 format, never saw one for 135mm > >> > >> I never noticed any pattern to Campagnolo crank markings of the era so I > >> can't help with the OP's query. > >> -- > >> Andrew Muzi > >> <www.yellowjersey.org/> > >> Open every day since 1 April, 1971 > >> ** Posted fromhttp://www.teranews.com** > > > >I used to have a chart that talked about what it all meant. Shape was > >the month, number was the year or something. > > Dear Peter, > > It turns out to be a nightmare date code: > > "Also, the crank arms can have a code consisting of a diamond > (1970's), circle (1980's), square (late non-fluted SR), etc. with a > number in the center possibly denoting the last digit of the year of > manufacture." > http://www.campyonly.com/tipstrivia.html > > "Starting in 1973 the crank arms have a code consisting of a diamond > (1970's), circle (1980's), square (late Super Record), with a number > in the center denoting the last digit of the year of manufacture (some > exceptions:11=1985, 22=1986, 33=1987 plus others)." > http://www.velo-retro.com/tline.html > > Where "41" in a square on a Croce D'Aune crank fits in this dating > scheme is a mystery covered by "possibly" and "plus others". > > Cheers, > > Carl Fogel Carl, To add to the mystery, I have a documented 1994 C-Record crankset with 94 in a square. The CDA gruppo is on a 1985 Eddy Merckx bike almost the same as this one except for saddle, rims and color - mine is all red. http://velospace.org/node/1903 CDA from what I can tell didn't come out until 1988. I'm guessing that the frame hung in a bike shop until 1988 or later and then was assembled with the CDA gruppo. Chas. |
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31-05.-2008, 06:58 AM
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#17 |
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Guest
Posts: n/a
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Re: Campy CDA crank date code
<dustoyevsky@mac.com> wrote in message news:1a623dd4-a33a-4a35-abf5-8aa9045d968d@25g2000hsx.googlegroups.com... On May 30, 1:43 pm, A Muzi <a...@yellowjersey.org> wrote: > Just as I suspected, some Italian toolmaker dropped random numbers in > the dies every once and a while. It's a way of attaining a measure of short-term immortality. --D-y Back in the mid 70s were building up a pro bike frame with a full Campy NR gruppo. One of our mechanics was having problems installing the left pedal. Upon closer examination we discovered that the pedal had a double lead left hand thread. Someone had to have intentionally threaded the pedal with a double lead thread. Chas./ |
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