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Old 03-12-14, 08:26 PM   #1
satbuilder 
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Another "what's this part called" question

I have a circa '77-79 Colnago Mexico. The rear brake bridge is the earlier style before they changed to the block style. Mounting the rear brakes I noticed it appears there's a piece missing. It resembles a spacer that is flat on one side and curved on the other to match the contour of the brake bridge.

Without the piece the flat washer contacts the curved surface of the brake bridge and does not look correct.

I saw the part on a 1977 gold plated Olmo on the speedbicycles site. I would post the pic but do not have permission.

Anybody know what this piece is called? Is this something Campagnolo produced?

Thanks,

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Old 03-12-14, 08:32 PM   #2
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If I understand correctly.......It is a somewhat standard part. Check the Boulder Bicycles web site. Mike Kone was offering some he said were OEM campagnolo parts, though I'm not sure. Concave brake washer, or something like that.
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Old 03-12-14, 08:35 PM   #3
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These guys?

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Old 03-12-14, 08:39 PM   #4
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radiused washer
a.k.a
radius washer
a.k.a
concave brake bridge washer

and yes. there're Campy branded ones. seen on the 'bay.

Last edited by orangeology; 03-12-14 at 08:42 PM.
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Old 03-12-14, 09:34 PM   #5
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LBS usually has them.
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Old 03-12-14, 09:43 PM   #6
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Note that the front and rear use a different radius because the front matches the shape of the fork crown.
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Old 03-12-14, 10:02 PM   #7
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Dia Compe also makes them, they are called "Moon Washers" because if you look at the profile it wraps around the brake bridge like a half-moon.
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Old 03-13-14, 07:49 AM   #8
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Thanks folks! At Scott's suggestion I took a look at Mike Kone's site. Looks like he has what I'm looking for.
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Old 03-13-14, 10:05 AM   #9
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I almost started this very thread a couple months ago, as I was looking for an extra one of those at that time, and was trying to figure out what to type in the search field on the big online auction site.

Then I thought to go over to the LBS across the street and they just gave me one. The guy behind the counter didn't really know what the proper name for one was, either.
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Old 03-13-14, 02:01 PM   #10
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Then I thought to go over to the LBS across the street and they just gave me one. The guy behind the counter didn't really know what the proper name for one was, either.
You made me LOL. I've had the same experience with automotive fasteners. Back in the '70s I was working on my dad's '68 F-250 and needed the nylon thingies that the taillight reflectors screwed in to. The local Ford dealer just handed them to me...
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Old 03-13-14, 02:10 PM   #11
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On a number of my Italian bikes from the late 60's to mid 70's the rear bridge actually had a brazed in bushing that presented a bit of tube beyond the bridge on the other side of the caliper, if that is the case then a Campagnolo washer and nut without the "moon washer" is correct.

The mood washer was needed when the bridge was not supported internally to prevent its deformation.

If you wish to close up the change in surface no problem, but it is not necessarily a requirement in my book.
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Old 03-13-14, 02:15 PM   #12
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If you drill through a moon washer you can mount recessed mount calipers to a non recessed frame.
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Old 03-13-14, 05:26 PM   #13
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Miamijim, Can't quite get that!? HEY a picture would help!
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Old 03-13-14, 06:13 PM   #14
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I can't picture that either. Drill through a moon washer. It already has a hole. Are you saying enlarge the hole to fit a recess nut?
Guessing so.
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Old 03-13-14, 06:16 PM   #15
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Thanks folks! At Scott's suggestion I took a look at Mike Kone's site. Looks like he has what I'm looking for.
BTW. I ordered a few of those too, a long while ago. And i'm not really convinced they are Campy units, myself. They seem a tad too large in diameter to me. But, they work, and look high quality.
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Old 03-13-14, 06:18 PM   #16
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I can't picture that either. Drill through a moon washer. It already has a hole. Are you saying enlarge the hole to fit a recess nut?
Guessing so.
That is how I picture it. But on some frames the distance between the bridge and the seat tube is not enough to get much of a drill in there, even with a "stubby" bit and a right angle drill.
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