Show us your bottom brackets!!
08-03-22, 05:53 PM
#1
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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.
Anyway, either way, I find it fascinating.
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!
😉
"Show us your drain holes"
unfortunate but also easy to remember, so there's that!
😉
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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
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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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
Ex Peugeot race team 753 with Titanium spindle with fully threaded outer shell
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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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08-07-22, 12:31 PM
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08-07-22, 12:37 PM
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P1020063 on Flickr
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08-07-22, 06:38 PM
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08-07-22, 07:01 PM
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1978 Eisentraut.
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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:
Looks a little like this RGF BB shell:
Last edited by P!N20; 08-08-22 at 08:53 PM.
08-09-22, 10:49 AM
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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!
08-09-22, 11:17 AM
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08-09-22, 11:40 AM
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08-09-22, 11:47 AM
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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!
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!
P1010732 on Flickr
P1020139 on FlickrThe BB shell on my daughters Pin.
Tre Cime Bottom Bracket Shell on Flickr
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08-09-22, 11:53 AM
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Bikes don't stand alone. They are two tired.
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08-10-22, 12:58 AM
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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!
08-10-22, 03:25 AM
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Last edited by P!N20; 08-10-22 at 03:29 AM.
