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Show us your bottom brackets!!

Old 08-03-22, 05:53 PM
  #1  
Robvolz 
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Show us your bottom brackets!!

OK, I get drilling for weight savings, but I also see that as an area where dirt and or moisture can accumulate.

Anyway, either way, I find it fascinating.
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Old 08-06-22, 10:29 AM
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There's an existing thread with many photos (some which have unfortunately expired due to photo hosters aging out) which has the unfortunate title of:
"Show us your drain holes"
unfortunate but also easy to remember, so there's that!
😉
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Old 08-06-22, 01:11 PM
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You can use drain holes, but you can also use a BB sleeve to prevent too much crud getting into the bearings
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Old 08-06-22, 04:47 PM
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OK, I guess I'll start it off. Cinelli "spoiler" bottom bracket:
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Old 08-06-22, 05:02 PM
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No drains in these

1930's Hercules path racer (with the bad red paint job)
Hercules

Delage
Early 20's Claude Delage.
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Old 08-06-22, 10:59 PM
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ok I will play !

Ex Peugeot race team 753 with Titanium spindle with fully threaded outer shell

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Old 08-07-22, 08:21 AM
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Carabela Professional Gitane TdF
Bottecchia
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Old 08-07-22, 09:12 AM
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I passed my Rigi along years ago but it has well…..
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Old 08-07-22, 12:31 PM
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P1020153 on Flickr
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P1020444 on Flickr
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Old 08-07-22, 12:37 PM
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Old 08-07-22, 02:46 PM
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Old 08-07-22, 06:38 PM
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...
Attached Images
File Type: jpg
DSC05936.JPG (35.7 KB, 85 views)
File Type: jpg
shell.jpg (30.9 KB, 83 views)
File Type: jpeg
track0008.jpeg (70.4 KB, 86 views)
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Old 08-07-22, 07:01 PM
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1978 Eisentraut.


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Old 08-08-22, 08:47 PM
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Not mine, but came across this the other day and wondered if the slots were added or they were factory:



Looks a little like this RGF BB shell:


Last edited by P!N20; 08-08-22 at 08:53 PM.
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Old 08-09-22, 10:49 AM
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Originally Posted by SJX426 View Post
P1020153 on Flickr
P1020179 on Flickr
P1040813 on Flickr
P1000526 on Flickr
Who made the investment-cast shell for Pinarello? I'm blanking on the logo in the topside...
Odd that with all the custom tooling to make this shell that Pina would opt for that "strap" for cable retention, always seemed like a crude solution to me: makes sense when you are "blacksmithing" and want a quick easy bit to fabricate and braze on, but this IC shell is at the other end of the spectrum!
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Old 08-09-22, 11:17 AM
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Originally Posted by SJX426 View Post
P1020153 on Flickr
Is that the "bridgeless bottom bracket shell" that's advertised along side the article on the Masi Volumetrica posted elsewhere on this board?
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Old 08-09-22, 11:40 AM
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Old 08-09-22, 11:47 AM
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Originally Posted by unworthy1 View Post
Who made the investment-cast shell for Pinarello? I'm blanking on the logo in the topside...
Odd that with all the custom tooling to make this shell that Pina would opt for that "strap" for cable retention, always seemed like a crude solution to me: makes sense when you are "blacksmithing" and want a quick easy bit to fabricate and braze on, but this IC shell is at the other end of the spectrum!
The graphic on the top of the shell is GP for Giovanni Pinarello.
P1010732 on Flickr
P1020139 on Flickr

The BB shell on my daughters Pin.
Tre Cime Bottom Bracket Shell on Flickr
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Old 08-09-22, 11:53 AM
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Originally Posted by smd4 View Post
Is that the "bridgeless bottom bracket shell" that's advertised along side the article on the Masi Volumetrica posted elsewhere on this board?
This is a Pinarello Montello. IIRC the Montello had two distinctive characteristics, this BB and SLX tubing. If it is a Pinarello and identified as a Montello, then it will have both of these + the chrome exposure as follows:
P1050226 on Flickr
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Old 08-10-22, 12:58 AM
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Originally Posted by SJX426 View Post
The graphic on the top of the shell is GP for Giovanni Pinarello.
P1010732 on Flickr
P1020139 on Flickr
Ah, now I know where I saw it before!
Duh...and looks like the seat lug above is also IC and has that logo (?) so the casters did a bunch of custom components for Pinarello, it appears.
Thanks for jogging my clouded memory!
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Old 08-10-22, 03:25 AM
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Originally Posted by SJX426 View Post
The graphic on the top of the shell is GPT for Giovanni Pinarello Treviso.
Pedantic fix

Originally Posted by SJX426 View Post
This is a Pinarello Montello. IIRC the Montello had two distinctive characteristics, this BB and SLX tubing.
There were SL Montellos as well - possibly not exported though.


Last edited by P!N20; 08-10-22 at 03:29 AM.
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