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Mystery top end frame

Old 10-30-16, 06:34 PM
  #1  
ionikos
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Mystery top end frame

Hi all,
Its been a while since I have been online after moving back to Sydney from Amsterdam. I went out to purchase a couple or bikes for parts and one of the is unique. There is no serial numbers i can see anywhere, however on the top side of the bottom bracket there is a BCM or BCH stamped on it and the cable guide on the bottom bracket is Vitus. Columbus on the forks and rear wheel. It also looks like it was powder coated and the original color looks like various colors as it shows red, blue and yellow under the powder coat. Any help would be appreciated. Thank you

Pictures link.
https://m.facebook.com/Vintage-Cycle...3558/?__tn__=C

Last edited by ionikos; 10-30-16 at 10:03 PM. Reason: Pics
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Old 10-30-16, 06:46 PM
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We will need some good detailed pics on this one to be of much help. Based on initial description I would guess it is small maker semi custom build likely European since your in Amsterdam which is a big bike country most likely of local origin.
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Old 10-30-16, 06:58 PM
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BCM stands for Bocama, so it has Bocama lugs. Pictures are kind of essential in identification!
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Old 10-30-16, 08:40 PM
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I've never seen a Bocama BB shell before, but this sure looks like one. Based on the "leaf" stay cap and your location I might look into Jan Le Grand, but this doesn't have his signature "diamond" brake bridge, yet might be somebody making an "homage" to Le Grand.
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Old 10-30-16, 09:06 PM
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Originally Posted by unworthy1 View Post
I've never seen a Bocama BB shell before, but this sure looks like one. Based on the "leaf" stay cap and your location I might look into Jan Le Grand, but this doesn't have his signature "diamond" brake bridge, yet might be somebody making an "homage" to Le Grand.
Sorry but just letting you know, i purchased this in Sydney Australia
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Old 10-30-16, 10:02 PM
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Originally Posted by zukahn1 View Post
We will need some good detailed pics on this one to be of much help. Based on initial description I would guess it is small maker semi custom build likely European since your in Amsterdam which is a big bike country most likely of local origin.
Pictures link.

https://m.facebook.com/Vintage-Cycle...3558/?__tn__=C
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Old 10-31-16, 12:35 AM
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-----

Attaching image of old catalogue page showing assortment of BOCAMA shells. Your style not shown, catalogue too old.

Frame's lugset is BOCAMA Competition 78 serie. They were offered both long an short on the nozzle cut side. Also some variation in cutouts.

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Attached Images
File Type: jpg
BOCAMA lug catalogue f) .jpg (94.0 KB, 160 views)
File Type: jpg
Bocama lugs illustration .jpg (97.3 KB, 161 views)

Last edited by juvela; 10-31-16 at 12:49 PM. Reason: addition
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Old 10-31-16, 08:39 AM
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Looks to be a nice late 70's racing frameset all of the frame parts look to nicer off the shelf so it could be just about any small builder. It does look to be very well made, since none of the parts look to be original and it's been repainted a bit hard to ID. It does have a few nice details in the way it's finished so there's a good chance someone make recognize the maker.






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Old 10-31-16, 11:23 AM
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well, interesting that this frame would have been in Sydney, but it still has sufficient "Euro" details to make me think it's more likely to have been built there rather than, say, Adelaide. But anything's possible...still my money would be on "Benelux" if I was betting. Also hard to tell but check if the seat post is too small, looks like the (yes Virginia, they do call it this) "Dutch style" pinch bolt might be TOO pinched.
In any case, now I HAVE seen a BCM BB shell in both photos and catalog scans, so my education continues.
BTW looks like a nice frame, good ON ya, mate!
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Old 10-31-16, 01:24 PM
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Agree with @unworthy1 that it has a 'Benelux feel' to it. The RD cable stop is new to me, however, as are the 'upside down' willow leafs. Don't remember having seen those before. Nice frame, though. Very nice.
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Old 10-31-16, 01:29 PM
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Frame's fork crown looks as though it may be a late edition of the BOCAMA Ref. DL, truncated & counterbored for incasso brakes.

Earlier version shown in this olde catalogue page.

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BOCAMA lug catalogue g) .jpg (93.9 KB, 88 views)
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Old 10-31-16, 08:46 PM
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Originally Posted by unworthy1 View Post
well, interesting that this frame would have been in Sydney, but it still has sufficient "Euro" details to make me think it's more likely to have been built there rather than, say, Adelaide. But anything's possible...still my money would be on "Benelux" if I was betting. Also hard to tell but check if the seat post is too small, looks like the (yes Virginia, they do call it this) "Dutch style" pinch bolt might be TOO pinched.
In any case, now I HAVE seen a BCM BB shell in both photos and catalog scans, so my education continues.
BTW looks like a nice frame, good ON ya, mate!
Thank you for all the info.

Looks like under all that red witch is spayed over the original paint is multi colored. The head is white, top tube red down tube is blue, seat tube is yellow and the seat stays and chain stays blue. I have seen that color scheme on a Gazelle.
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