Bottom bracket query
10-29-21 | 08:47 AM
#2
Mad bike riding scientist
Joined: Nov 2004
Posts: 29,137
Likes: 6,185
From: Denver, CO
Bikes: Some silver ones, a red one, a black and orange one, and a few titanium ones
The best way is with a Park HCW-11 (or similar). The less better way (but still doable) is with a pin spanner . The least best way is with screwdriver pushing on the slots. It’s not the easiest way but will work. It’s just usually a lot of work.
A word of warning, however: If that is your bike it looks kind of new and, based on the bottom bracket, it’s on a very low end bike. Lots of those parts are made from Chinesium which is a substance that looks like steel but has the strength of wet toilet paper. Often those pull apart when you try to unscrew them and become a nightmare to extract. If you can get it out, I wouldn’t put it back. Get a cartridge bearing bottom bracket as a replacement. They are much more robust.
A word of warning, however: If that is your bike it looks kind of new and, based on the bottom bracket, it’s on a very low end bike. Lots of those parts are made from Chinesium which is a substance that looks like steel but has the strength of wet toilet paper. Often those pull apart when you try to unscrew them and become a nightmare to extract. If you can get it out, I wouldn’t put it back. Get a cartridge bearing bottom bracket as a replacement. They are much more robust.
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Dreamin' of Bemidji Down the Mississippi (in part)
Plan Epsilon Around Lake Michigan in the era of Covid
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Stuart Black
Dreamin' of Bemidji Down the Mississippi (in part)
Plan Epsilon Around Lake Michigan in the era of Covid
Gold Fever Three days of dirt in Colorado
Pokin' around the Poconos A cold ride around Lake Erie
Dinosaurs in Colorado A mountain bike guide to the Purgatory Canyon dinosaur trackway
Solo Without Pie. The search for pie in the Midwest.
Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
10-29-21 | 08:49 AM
#3
Senior Member
Joined: Jul 2013
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From: Nor-Cal
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Post in bicycle mechanics not GD for your best chance at getting some info.
10-29-21 | 08:58 AM
#4
Senior Member
Joined: Oct 2015
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Bikes: 2015 Workswell 066, 2017 Workswell 093, 2014 Dawes Sheila, 1983 Cannondale 500, 1984 Raleigh Olympian, 2007 Cannondale Rize 4, 2017 Fuji Sportif 1 LE
[MENTION=21724]cyccommute[/MENTION] has the easy answers .... get a specialized tool made for old tech, get a specialized tool made for other old tech, or tap it out patiently with a flat screwdriver .... lots of penetrating oil, lots of care. And toss it, unless you are doing a vintage restoration. That's 40-year-old tech which is half-a-dozen generations outmoded .... replaced by more reliable stuff. Any common thread-in BSA bottom bracket will (Should) fit, and last for the next decade or two.
If that's a Raleigh though ... Raleigh used a proprietary BB standard which makes everything harder.
If that's a Raleigh though ... Raleigh used a proprietary BB standard which makes everything harder.
10-29-21 | 10:05 AM
#6
Mad bike riding scientist
Joined: Nov 2004
Posts: 29,137
Likes: 6,185
From: Denver, CO
Bikes: Some silver ones, a red one, a black and orange one, and a few titanium ones
__________________
Stuart Black
Dreamin' of Bemidji Down the Mississippi (in part)
Plan Epsilon Around Lake Michigan in the era of Covid
Gold Fever Three days of dirt in Colorado
Pokin' around the Poconos A cold ride around Lake Erie
Dinosaurs in Colorado A mountain bike guide to the Purgatory Canyon dinosaur trackway
Solo Without Pie. The search for pie in the Midwest.
Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
Stuart Black
Dreamin' of Bemidji Down the Mississippi (in part)
Plan Epsilon Around Lake Michigan in the era of Covid
Gold Fever Three days of dirt in Colorado
Pokin' around the Poconos A cold ride around Lake Erie
Dinosaurs in Colorado A mountain bike guide to the Purgatory Canyon dinosaur trackway
Solo Without Pie. The search for pie in the Midwest.
Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
10-29-21 | 10:17 AM
#7
Senior Member
Joined: Jan 2007
Posts: 1,971
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From: Eastern VA
Bikes: 2022 Fuel EX 8, 2021 Domane SL6, Black Beta (Nashbar frame), 2004 Trek 1000C for the trainer
10-29-21 | 10:36 AM
#8
Obsessed with Eddington
Joined: Jun 2013
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From: Brussels (BE) 🇧🇪
Bikes: '16 Spesh Diverge, '14 Spesh Fatboy, '18 Spesh Epic, '18 Spesh SL6, '21 Spesh SL7, '21 Spesh Diverge...and maybe n+1?
The best way is with a Park HCW-11 (or similar). The less better way (but still doable) is with a pin spanner . The least best way is with screwdriver pushing on the slots. It’s not the easiest way but will work. It’s just usually a lot of work.
A word of warning, however: If that is your bike it looks kind of new and, based on the bottom bracket, it’s on a very low end bike. Lots of those parts are made from Chinesium which is a substance that looks like steel but has the strength of wet toilet paper. Often those pull apart when you try to unscrew them and become a nightmare to extract. If you can get it out, I wouldn’t put it back. Get a cartridge bearing bottom bracket as a replacement. They are much more robust.
A word of warning, however: If that is your bike it looks kind of new and, based on the bottom bracket, it’s on a very low end bike. Lots of those parts are made from Chinesium which is a substance that looks like steel but has the strength of wet toilet paper. Often those pull apart when you try to unscrew them and become a nightmare to extract. If you can get it out, I wouldn’t put it back. Get a cartridge bearing bottom bracket as a replacement. They are much more robust.
