Odd bottom bracket removal
04-11-15 | 02:46 PM
#1
Thread Starter
Newbie
Joined: Apr 2015
Posts: 2
Likes: 0
Odd bottom bracket removal
New to biking componentry and attempting to upgrade a bike on my own. The bike I have currently has really crappy chinese components; so when trying to remove the BB I couldn't seem to figure out how to remove the drive side part part of BB (pic). I've tugged on in the flat ends with a crescent wrench with all my strength and it won't come loose, it's difficult enough with it only being 2.5mm in width! It doesn't look welded and I can see the threads, but I can't even figure out how to google a solution..
04-11-15 | 03:03 PM
#2
Senior Member
Joined: Apr 2009
Posts: 39,897
Likes: 3,865
From: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Are you aware that the right cup has a left hand thread, and unscrews clockwise? From the small dings I see in the photo I suspect that you're not and are turning it tighter not looser..
If you still can't loosen it with a large wrench, try using a bolt and large washers to hold the wrench flat to the cup so it cannot jump off. If that fails, there are various methods for removing very tight cup, but let's cross that bridg if/when we come to it.
I suspect (hope) that simply turning it in the right direction will have you on your way fast enough.
If you still can't loosen it with a large wrench, try using a bolt and large washers to hold the wrench flat to the cup so it cannot jump off. If that fails, there are various methods for removing very tight cup, but let's cross that bridg if/when we come to it.
I suspect (hope) that simply turning it in the right direction will have you on your way fast enough.
__________________
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
04-11-15 | 03:41 PM
#4
Senior Member
Joined: Apr 2009
Posts: 39,897
Likes: 3,865
From: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Rather than type what's been writen countless times already, I suggest you search for "how to remove a stuck bottom bracket cup" or various iterations of a similar phrase. You'll get links to videos and tutorials, showing various tools and techniques.
__________________
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
04-11-15 | 04:28 PM
#5
Really Old Senior Member
Joined: Feb 2007
Posts: 14,636
Likes: 1,883
From: Mid Willamette Valley, Orygun
Bikes: 87 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds. 2019 Giant Explore E+3
Park HCW-4 and a 4 lb. hammer-
Park Tool Co. » HCW-4 : Crank and Bottom Bracket Wrench : Crank Tools
Park Tool Co. » HCW-4 : Crank and Bottom Bracket Wrench : Crank Tools
04-11-15 | 05:14 PM
#6
Senior Member
Joined: Feb 2004
Posts: 379
Likes: 0
From: Sacramento
Bikes: SR, Bianchi, Raleigh, Bertin, Kona, Schwinn, Eisentraut, Zunow, Columbine, Naked, Nishiki, Phillips, Specialized, Giant
Better yet, don't buy an expensive Park tool... read Sheldon Brown's solution... "nut, washers, and bolt" tool toward the bottom of this page. Tool Tips--Bottom Bracket Cups
I have never had this method fail me.
I have never had this method fail me.
04-11-15 | 07:09 PM
#7
Senior Member
Joined: Feb 2012
Posts: 19,352
Likes: 5,470
From: Rochester, NY
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
Agreed that working smart beats working strong. A long bolt with big washers run through the BB cup and shell will "bolt" the wrench to the cup. Now one can pull, push, hammer, extra leverage the wrench without fear of it slipping off the cup. As soon as the cup begins to rotate stop and loosen up the through bolt. Andy.
04-11-15 | 09:30 PM
#9
Senior Member
Joined: Oct 2004
Posts: 3,248
Likes: 4
From: Seattle
Bikes: Kuota Ksano. Litespeed T5 gravel - brilliant!
Thread
Thread Starter
Forum
Replies
Last Post
capnjonny
Bicycle Mechanics
39
11-13-18 03:24 PM
