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Campy CDA crank date code



 
 
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  #1  
Old May 28th 08, 09:02 AM posted to rec.bicycles.tech
* * Chas
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Default Campy CDA crank date code

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.

Chas.


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  #2  
Old May 28th 08, 03:42 PM posted to rec.bicycles.tech
Guy Anderson, Sr.
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Posts: 74
Default Campy CDA crank date code

On Wed, 28 May 2008 01:02:12 -0700, "* * Chas"
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.

Chas.


Are you sure it's not 81 in the square? (Look with a magnifying
glass.)

  #3  
Old May 29th 08, 12:33 AM posted to rec.bicycles.tech
Hank
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Posts: 887
Default Campy CDA crank date code

On May 28, 7:42 am, "Guy Anderson, Sr."
wrote:
On Wed, 28 May 2008 01:02:12 -0700, "* * Chas"

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.


Chas.


Are you sure it's not 81 in the square? (Look with a magnifying
glass.)



I hope you don't mean to imply that it was made in 1981, because the
Croce D'Aune group didn't hit until 1986 or so.
  #4  
Old May 29th 08, 12:52 AM posted to rec.bicycles.tech
[email protected]
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Posts: 7,934
Default Campy CDA crank date code

On May 28, 2:02*am, "* * Chas" 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.

Chas.


Dear Chas,

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

Cheers,

Carl Fogel

  #5  
Old May 29th 08, 01:02 AM posted to rec.bicycles.tech
Guy Anderson, Sr.
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Posts: 74
Default Campy CDA crank date code

On Wed, 28 May 2008 16:33:28 -0700 (PDT), Hank
wrote:

On May 28, 7:42 am, "Guy Anderson, Sr."
wrote:
On Wed, 28 May 2008 01:02:12 -0700, "* * Chas"

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.


Chas.


Are you sure it's not 81 in the square? (Look with a magnifying
glass.)



I hope you don't mean to imply that it was made in 1981, because the
Croce D'Aune group didn't hit until 1986 or so.


Thanks for pointing out my erroneous implication. In this group,
someone of vastly superior knowledge is always quick to correct such
faux pas.
  #6  
Old May 29th 08, 05:03 AM posted to rec.bicycles.tech
Hank
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Posts: 887
Default Campy CDA crank date code

On May 28, 4:52 pm, wrote:
On May 28, 2:02 am, "* * Chas" 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.


Chas.


Dear Chas,

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

Cheers,

Carl Fogel


Carl-

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?).

Hank
  #7  
Old May 29th 08, 05:38 AM posted to rec.bicycles.tech
A Muzi
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Posts: 4,551
Default Campy CDA crank date code

"* * Chas" 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.


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 from http://www.teranews.com **
  #8  
Old May 29th 08, 06:57 AM posted to rec.bicycles.tech
[email protected]
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Posts: 7,934
Default Campy CDA crank date code

On May 28, 8:42*am, "Guy Anderson, Sr."
wrote:
On Wed, 28 May 2008 01:02:12 -0700, "* * Chas"

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.


Chas.


Are you sure it's not 81 in the square? *(Look with a magnifying
glass.)


Dear Guy,

The mysterious "41" in the Croce crank showed up in another thread
about three years ago:

"Sorry, don't know what the 93 in the square means. My Croce cranks
have a 41 in a box, so it's not year of manufacture."

http://www.bikeforums.net/showthread.php?t=107929

They never decided in that thread what the "41" and "93" meant.

Cheers,

Carl Fogel
  #9  
Old May 29th 08, 09:48 AM posted to rec.bicycles.tech
* * Chas
external usenet poster
 
Posts: 1,839
Default Campy CDA crank date code


"Guy Anderson, Sr." wrote in message
...
On Wed, 28 May 2008 01:02:12 -0700, "* * Chas"
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.

Chas.


Are you sure it's not 81 in the square? (Look with a magnifying
glass.)


Nope, it's 41 on both cranks. I have very good vision.... 8-)

Chas.


  #10  
Old May 29th 08, 10:12 AM posted to rec.bicycles.tech
* * Chas
external usenet poster
 
Posts: 1,839
Default Campy CDA crank date code


"Hank" wrote in message
...
On May 28, 4:52 pm, wrote:
On May 28, 2:02 am, "* * Chas" 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.


Chas.


Dear Chas,

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

Cheers,

Carl Fogel


Carl-

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?).

Hank


Carl,

It's a date code of 41 in a square on both cranks. The CDA gruppo came out
in 1988 with a 39T minimum chainring.

Hank,

There are some after market 38T chainrings for 130mm BCD cranks but 39T is
minimum for a 135mm BCD. The chain just about drags on the spider with 38T
rings on a 130mm Bcd crank.

Chas.


 




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