BB shell perforation
02-18-13 | 03:48 PM
#1
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From: Williamsburg, VA Sebastian, FL
Bikes: 1987 Centurion Ironman Master, 1992 Koga Miyata Exerciser, 1992 Schwinn Crosscut
BB shell perforation
The frame is a Koga Miyata Pro Racer, the pic pulled off an expired listing. Did they do this for weight savings, or drainage, or something else I'm not thinking of?
Almost seems like the opportunity for introducing road dust, moisture, or grime might outweigh the advantages. I'd be tempted to slap a piece of duct tape over them!
Almost seems like the opportunity for introducing road dust, moisture, or grime might outweigh the advantages. I'd be tempted to slap a piece of duct tape over them!
02-18-13 | 03:52 PM
#2
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From: Tampa Bay, Florida
Bikes: 87 Bridgestone 550 (Shocking Electric Metallic Pink)
For frame drainage, in the recently posted article from Sheldon Brown's site about frames, they recommend PUTTING a hole in your BB Shell if you don't have one. Trapped moisture will ROT out a frame from the inside. So they say.
02-18-13 | 07:21 PM
#3
Bianchi Goddess
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From: Shady Pines Retirement Fort Wayne, In
Bikes: Too many to list here check my signature.
It was common practice, and most BBs came with them, to use a plastic acorian type sleeve between the cups to prevent contanination.
Most frame builders put a logo down there. Colnago used their club, Geurciotti a star, some just dots or slots.
RiGi had there own ideas for venting the BB shell
Most frame builders put a logo down there. Colnago used their club, Geurciotti a star, some just dots or slots.
RiGi had there own ideas for venting the BB shell
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
Last edited by Bianchigirll; 02-18-13 at 07:24 PM.
02-18-13 | 07:29 PM
#4
What??? Only 2 wheels?
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From: Boston-ish, MA
Bikes: 72 Peugeot UO-8, 82 Peugeot TH8, 87 Bianchi Brava, 76? Masi Grand Criterium, 74 Motobecane Champion Team, 86 & 77 Gazelle champion mondial, 81? Grandis, 82? Tommasini, 83 Peugeot PF10
Masi:
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Real cyclists use toe clips.
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Real cyclists use toe clips.
With great bikes comes great responsibility.
jimmuller
02-18-13 | 09:45 PM
#6
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From: Williamsburg, VA Sebastian, FL
Bikes: 1987 Centurion Ironman Master, 1992 Koga Miyata Exerciser, 1992 Schwinn Crosscut
The brass plate is a good idea.
I just hope, someday, to own an upper end frame that needs one!
That Masi is super sweet. Trouble is...that "M" reminds me of the University of Michigan Walverines, Michigan State University's heated rival.
Go Spartans!
I just hope, someday, to own an upper end frame that needs one!
That Masi is super sweet. Trouble is...that "M" reminds me of the University of Michigan Walverines, Michigan State University's heated rival.
Go Spartans!
02-19-13 | 11:42 AM
#8
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From: S.F. Bay Area
Bikes: Motobecane Grand Record, Colnago Super, Mondia Super, Mondia Special, Mondia Prestige (for sale 55cm),Titan Star, Titan Exklusiv, Windsor
