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Identifying Athena or Chorus monoplaner brakes

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Identifying Athena or Chorus monoplaner brakes

Old 03-04-21, 07:33 AM
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Identifying Athena or Chorus monoplaner brakes

I am pretty sure these are Athena, but not 100% sure as they seem to have changed over the years a little. Anyone know? Thanks for any help.


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Old 03-04-21, 07:45 AM
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Not monoplaners
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Old 03-04-21, 08:12 AM
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Originally Posted by Ex Pres View Post
Not monoplaners
What am I missing? These is an old Chorus monoplaner from my bike. Are you saying the term "monoplaner" doesn't fit this brake either? I know this is Chorus because I bought it new.


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Old 03-04-21, 08:17 AM
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Originally Posted by h_curtis View Post
I am pretty sure these are Athena, but not 100% sure as they seem to have changed over the years a little. Anyone know? Thanks for any help.

They're not "monoplaners" regardless.
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Old 03-04-21, 08:25 AM
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Here's what a Monoplaner looks like, see the slotted arms?

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Old 03-04-21, 08:55 AM
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Originally Posted by clubman View Post
Here's what a Monoplaner looks like, see the slotted arms?
What he said

1988 Dealer Parts Catalog.

Athena



Chorus

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Old 03-04-21, 08:58 AM
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H Curtis,
Dual Pivot vs Single Pivot ?....mono planers thus the slot.
I can't help other than that, I believe that the (some) early ones had a wider blade where the pads were connected. The difference seems to be very minor, but the Campagnolo experts will clarify.
Best, Ben
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Old 03-04-21, 09:15 AM
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Thanks for the last three responses. I was lazily looking at things because I didn't realize there were brakes that look that similar.

You guys saved me some coin. Thanks again.

I am actually looking for the oval pad holders and gave up. Figured I would just buy a set of brakes for spare parts and get the oval holders which are very hard to find loose.

I will keep searching.
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Old 03-04-21, 10:20 AM
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Originally Posted by h_curtis View Post
I am pretty sure these are Athena...
They look like my Athena D500 calipers. Mine reach 43-57mm. The rounded holders were offered in '91-'92. Kool-Stop makes replacement pads.
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Old 03-04-21, 10:51 AM
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I'll say one thing, there are one heck of a lot of incorrect listings on Ebay. Wow! I am looking for a watch dial and the listings are very often false. Buyer beware out there for sure.
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Old 03-04-21, 10:56 AM
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Chorus Monoplanars - Note the sharp curve above the brake pad. Athena and a couple of others are shaped differently. Pad can be obtained form KoolStop.
P1010556 on Flickr

All are single pivot.
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Old 03-04-21, 11:14 AM
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Originally Posted by xiaoman1 View Post
H Curtis,
Dual Pivot vs Single Pivot....thus the slot.
I can't help other than that, I believe that the (some) early ones had a wider blade where the pads were connected. The difference seem to be very minor, but the Campagnolo experts will clarify.
Best, Ben
Ben,

I think even the Monoplanars are single pivot. Looking at that parts diagram, I can only see the single center pivot in both models. Maybe I am missing some campy wizardry, and I actually hope I am. I think monoplanars are beautiful, but I could never justify them since I only keep one road bike around these days and I prefer dual pivot on bikes that actually get ridden.
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Old 03-04-21, 11:23 AM
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Originally Posted by tricky View Post
Ben,

I think even the Monoplanars are single pivot. Looking at that parts diagram, I can only see the single center pivot in both models. Maybe I am missing some campy wizardry, and I actually hope I am. I think monoplanars are beautiful, but I could never justify them since I only keep one road bike around these days and I prefer dual pivot on bikes that actually get ridden.
tricky,
You are right, I should have been more precise with the definition, they all have a single pivot point but the way they work is slightly different....perhaps this will further clarify some questions...I edited the first post to try to clarify a bit.
https://www.bikeforums.net/classic-v...ar-brakes.html
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Old 03-04-21, 11:36 AM
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Originally Posted by SJX426 View Post
Chorus Monoplanars - Note the sharp curve above the brake pad. Athena and a couple of others are shaped differently. Pad can be obtained form KoolStop.
P1010556 on Flickr

All are single pivot.
Actually, Chorus went through some design changes as well. Those look like a later version of Chorus monoplanars. The earlier version of Chorus did not have the same pronounced curvature above the brake pads and also had a flatter front edge in front of the brake pad bolts.

I'm copying a quote from member bianchigirl from this old thread which shows the earlier version (and her added cobalt nut), and some more notes on Chorus vs. Athena differences:

Originally Posted by Bianchigirll View Post
it is very hard to tell between early Athena and the real Chorus. one way the real Chorus and very early Athena (after Athena got the Monoplanor design in '93ish) are identifable from others is the use of a thinner nut behind the cone shaped cap nut.

another difference is the use of the afore mentioned white 'O' ring and the white plastic covering on the wheel guides. the heavier pad mounting area is a Athena detail I believe.

when the rounded brake pads came into vouge I am not certain but I believe it was with Athena.

these look the most like what i would call a real chorus



FWIW these came on my '88 Super Leggera, so I know for sure these are original Chorus, well aside from the capnut

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Old 03-04-21, 11:37 AM
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The operation and function is the same a s a standard side single pivot side pull. the difference is that the arms are not in two planes but one, hence monoplanar. I am not sure this is an advantage with the arms offset such that the brake pads are in the same plane with each other.
Older side pulls had one brake pad offset from the other. This design applies force on the rim in the same plane.
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Old 03-04-21, 01:58 PM
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Originally Posted by SJX426 View Post
Chorus Monoplanars - Note the sharp curve above the brake pad. Athena and a couple of others are shaped differently. Pad can be obtained form KoolStop.
P1010556 on Flickr

All are single pivot.
Actually - early Chorus does not have that sharp curve. Here they are side by side - early chorus on the right and later monoplaner on the left.





OP: s brakes are Athena.

Last edited by styggno1; 03-04-21 at 02:01 PM.
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Old 03-04-21, 02:49 PM
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WELL! I guess I will just have to get some black rings for my adjusters!
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Old 03-04-21, 03:29 PM
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One difference to tell Athena from Chorus is the anchor for the end of the spring. Only really easy to see in one picture in this thread, side view in post #16. Slotted metal cylinder on Chorus and it’s a plastic clip on Athena.
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Old 03-04-21, 10:29 PM
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Well let's see if I now have a clue after being schooled by you folks. Here is a monoplaner picture. I am going to guess Chorus. Do I get an A, D or F. D being it is an Athena. I was thinking of buying this for some parts and the pad holders.
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Old 03-04-21, 10:40 PM
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Originally Posted by h_curtis View Post
I am going to guess Chorus.
I concur.
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Old 03-05-21, 07:21 AM
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Good info in this thread. That era of Campy brakes are some of the most beautiful IMO.
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Old 03-05-21, 08:21 AM
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Cyclyng.com has a comprehensive survey about everything Monoplanar. Also a good opportunity to learn some technical German (or use google translate)

Compiled into one big jpg.:



Source
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