Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

Can't get BB off, but its weird :|

Notices
Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

Can't get BB off, but its weird :|

Old 09-30-19, 08:34 AM
  #1  
chico1st
30mi/day commuter
Thread Starter
 
Join Date: Apr 2008
Location: Toronto, Canada
Posts: 797
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Can't get BB off, but its weird :|

Hi there quick question about removing this bottom bracket.

Someone gave me an old super cycle which is in perfect shape except it has a loose cartridge bottom bracket (I have the cranks off and the spindles flop everywhere).


I can't get the cups off and I just wanted to check some stuff before I destroy my tools:
  • Everything on the bike is shimano so I assume the non-drive side cup needs to be turned clockwise to loosen it, drive side is counter clockwise.
  • I need to use a bottom bracket tool AND a 20spline tool (I have a BBT32) to remove the drive side pictured below
  • The splines on my bbt32 don't engage that deep (maybe 1mm). Is that normal?
  • The BBT32 kind of pops out when I push really hard but there isn't a good way to force it to stay inside the teeth
  • tightening or replacing the cartridge should solve the issue.

Images
chico1st is offline  
Old 09-30-19, 08:41 AM
  #2  
trailangel
Senior Member
 
trailangel's Avatar
 
Join Date: Feb 2014
Location: Pasadena, CA
Posts: 4,809

Bikes: Schwinn Varsity

Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 1897 Post(s)
Liked 683 Times in 401 Posts
Originally Posted by chico1st View Post
Hi there quick question about removing this bottom bracket.

Someone gave me an old super cycle which is in perfect shape except it has a loose cartridge bottom bracket (I have the cranks off and the spindles flop everywhere).


I can't get the cups off and I just wanted to check some stuff before I destroy my tools:
  • Everything on the bike is shimano so I assume the non-drive side cup needs to be turned clockwise to loosen it, drive side is counter clockwise.
  • I need to use a bottom bracket tool AND a 20spline tool (I have a BBT32) to remove the drive side pictured below
  • The splines on my bbt32 don't engage that deep (maybe 1mm). Is that normal?
  • The BBT32 kind of pops out when I push really hard but there isn't a good way to force it to stay inside the teeth
  • tightening or replacing the cartridge should solve the issue.

Images
Are you sure?
Take off the lock ring first.
https://www.sheldonbrown.com/gloss_bo-z.html#bottom
trailangel is offline  
Old 09-30-19, 10:29 AM
  #3  
Dan Burkhart 
Senior member
 
Dan Burkhart's Avatar
 
Join Date: Oct 2004
Location: Oakville Ontario
Posts: 7,964
Mentioned: 23 Post(s)
Tagged: 0 Thread(s)
Quoted: 883 Post(s)
Liked 502 Times in 292 Posts
Originally Posted by chico1st View Post
Hi there quick question about removing this bottom bracket.

Someone gave me an old super cycle which is in perfect shape except it has a loose cartridge bottom bracket (I have the cranks off and the spindles flop everywhere).


I can't get the cups off and I just wanted to check some stuff before I destroy my tools:
  • Everything on the bike is shimano so I assume the non-drive side cup needs to be turned clockwise to loosen it, drive side is counter clockwise.
  • I need to use a bottom bracket tool AND a 20spline tool (I have a BBT32) to remove the drive side pictured below
  • The splines on my bbt32 don't engage that deep (maybe 1mm). Is that normal?
  • The BBT32 kind of pops out when I push really hard but there isn't a good way to force it to stay inside the teeth
  • tightening or replacing the cartridge should solve the issue.

Images
Actually, the loosening direction is opposite to that. It is the drive side that is reverse threaded.
I have a tool that holds the BB tool in place for removal and installation, but there are hacks that you can use to do it without the tool. We just had a thread on that here recently.
Dan Burkhart is offline  
Old 09-30-19, 03:24 PM
  #4  
Homebrew01
Super Moderator
 
Homebrew01's Avatar
 
Join Date: Jul 2004
Location: Ffld Cnty Connecticut
Posts: 21,771

Bikes: Old Steelies I made, Old Cannondales

Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 1142 Post(s)
Liked 748 Times in 504 Posts
Moved from General
__________________
Bikes: Old steel race bikes, old Cannondale race bikes, less old Cannondale race bike, crappy old mtn bike.

FYI: https://www.bikeforums.net/forum-sugg...ad-please.html
Homebrew01 is online now  
Old 09-30-19, 06:03 PM
  #5  
Bill Kapaun
Really Old Senior Member
 
Bill Kapaun's Avatar
 
Join Date: Feb 2007
Location: Mid Willamette Valley, Orygun
Posts: 13,332

Bikes: 87 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.

Mentioned: 19 Post(s)
Tagged: 0 Thread(s)
Quoted: 1574 Post(s)
Liked 911 Times in 649 Posts
Originally Posted by Dan Burkhart View Post
Actually, the loosening direction is opposite to that. It is the drive side that is reverse threaded.
I have a tool that holds the BB tool in place for removal and installation, but there are hacks that you can use to do it without the tool. We just had a thread on that here recently.
Like this-
Bill Kapaun is offline  
Likes For Bill Kapaun:
Old 09-30-19, 08:45 PM
  #6  
chico1st
30mi/day commuter
Thread Starter
 
Join Date: Apr 2008
Location: Toronto, Canada
Posts: 797
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by Bill Kapaun View Post
Like this-
Oooo right on. OK that problem is annoying enough that I will wander around looking for some washers before I try this again

Thanks for the tip!
chico1st is offline  
Old 09-30-19, 08:50 PM
  #7  
Bigbus
Very Senior Member
 
Join Date: Mar 2018
Location: Always on the Run
Posts: 1,211

Bikes: Giant Quasar & Fuji Roubaix

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 413 Post(s)
Liked 343 Times in 244 Posts
That's ingenious Bill. I would have just found a larger hammer...
Bigbus is offline  
Old 09-30-19, 08:57 PM
  #8  
Bill Kapaun
Really Old Senior Member
 
Bill Kapaun's Avatar
 
Join Date: Feb 2007
Location: Mid Willamette Valley, Orygun
Posts: 13,332

Bikes: 87 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.

Mentioned: 19 Post(s)
Tagged: 0 Thread(s)
Quoted: 1574 Post(s)
Liked 911 Times in 649 Posts
Originally Posted by chico1st View Post
Oooo right on. OK that problem is annoying enough that I will wander around looking for some washers before I try this again

Thanks for the tip!
Keep in mind the bolts are 8x1.0mm, not the more common 8x1.25mm.
Take a crank bolt with you when shopping. Sometimes a crank bolt will work, depending on which tool you have & spindle length.
With 2-3 bolts & a "few" 3/8" (or 8mm) washers, you can cover any length spindle. (or 1 really long bolt & a lot of washers.
Bill Kapaun is offline  
Old 09-30-19, 08:59 PM
  #9  
Bill Kapaun
Really Old Senior Member
 
Bill Kapaun's Avatar
 
Join Date: Feb 2007
Location: Mid Willamette Valley, Orygun
Posts: 13,332

Bikes: 87 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.

Mentioned: 19 Post(s)
Tagged: 0 Thread(s)
Quoted: 1574 Post(s)
Liked 911 Times in 649 Posts
Originally Posted by Bigbus View Post
That's ingenious Bill. I would have just found a larger hammer...
Then "Like" it and make me famous.....
Bill Kapaun is offline  
Likes For Bill Kapaun:
Old 09-30-19, 09:04 PM
  #10  
Bigbus
Very Senior Member
 
Join Date: Mar 2018
Location: Always on the Run
Posts: 1,211

Bikes: Giant Quasar & Fuji Roubaix

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 413 Post(s)
Liked 343 Times in 244 Posts
Originally Posted by Bill Kapaun View Post
Then "Like" it and make me famous.....
Are we happy now?
Bigbus is offline  
Old 09-30-19, 09:22 PM
  #11  
Bill Kapaun
Really Old Senior Member
 
Bill Kapaun's Avatar
 
Join Date: Feb 2007
Location: Mid Willamette Valley, Orygun
Posts: 13,332

Bikes: 87 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.

Mentioned: 19 Post(s)
Tagged: 0 Thread(s)
Quoted: 1574 Post(s)
Liked 911 Times in 649 Posts
Originally Posted by Bigbus View Post
Are we happy now?
My mother would be proud!
Bill Kapaun is offline  
Old 09-30-19, 10:27 PM
  #12  
WizardOfBoz
Generally bewildered
 
WizardOfBoz's Avatar
 
Join Date: Aug 2015
Location: Eastern PA, USA
Posts: 2,955

Bikes: 2014 Trek Domane 6.9, 1999 LeMond Zurich, 1978 Schwinn Superior

Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 1115 Post(s)
Liked 303 Times in 227 Posts
Bill's idea is a great one. The first law of BB removal though, is "Thou shalt maketh sureth that one knoweth the thread direction".

As a bit of practical advice, once you get your tool threaded onto the spindle, you can put the tool flats in a vice and use the frame as a wrench. Often easier.
WizardOfBoz is offline  
Likes For WizardOfBoz:
Old 10-01-19, 01:02 AM
  #13  
cpach
Senior Member
 
Join Date: Oct 2009
Location: Mt Shasta, CA, USA
Posts: 2,064

Bikes: Too many. Cannondale SuperSix, Trek Remedy 8, Trek Crossrip+ get the most ride time.

Mentioned: 26 Post(s)
Tagged: 0 Thread(s)
Quoted: 501 Post(s)
Liked 279 Times in 212 Posts
It's pretty normal to have a challenging time keeping the splines engaged on the BB tool. The above suggestion is good, you can also just put a big clamp over it all also.
cpach is offline  
Old 10-01-19, 10:52 AM
  #14  
sch
Senior Member
 
Join Date: May 2003
Location: Mountain Brook. AL
Posts: 3,981
Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
Quoted: 297 Post(s)
Likes: 0
Liked 124 Times in 96 Posts
Originally Posted by WizardOfBoz View Post
Bill's idea is a great one. The first law of BB removal though, is "Thou shalt maketh sureth that one knoweth the thread direction".

As a bit of practical advice, once you get your tool threaded onto the spindle, you can put the tool flats in a vice and use the frame as a wrench. Often easier.


Reminded me of an attempt ~yr 2000 to remove a freewheel from a rear hub in place since ~1974. Used a vice to clamp the FW remover and grabbed the rims and
after carefully checking which direction to turn the wheel proceeded to shear off the prongs on the FW remover and permanently cant the FW body on the threads,
such that the FW would barely turn. Probably turned the wheel the wrong way, or the FW was really stuck. Still have the wheel as a memento.
sch is offline  
Old 10-01-19, 10:58 AM
  #15  
WizardOfBoz
Generally bewildered
 
WizardOfBoz's Avatar
 
Join Date: Aug 2015
Location: Eastern PA, USA
Posts: 2,955

Bikes: 2014 Trek Domane 6.9, 1999 LeMond Zurich, 1978 Schwinn Superior

Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 1115 Post(s)
Liked 303 Times in 227 Posts
Golly, sch, nothing like that EVER happened to me...
I mean, I got all my wisdom from seeing OTHER people make mistakes.

_____________________________________
Experience is mistakes repeated many times....
WizardOfBoz is offline  
Old 10-01-19, 11:01 AM
  #16  
Bill Kapaun
Really Old Senior Member
 
Bill Kapaun's Avatar
 
Join Date: Feb 2007
Location: Mid Willamette Valley, Orygun
Posts: 13,332

Bikes: 87 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.

Mentioned: 19 Post(s)
Tagged: 0 Thread(s)
Quoted: 1574 Post(s)
Liked 911 Times in 649 Posts
Originally Posted by sch View Post
Reminded me of an attempt ~yr 2000 to remove a freewheel from a rear hub in place since ~1974. Used a vice to clamp the FW remover and grabbed the rims and
after carefully checking which direction to turn the wheel proceeded to shear off the prongs on the FW remover and permanently cant the FW body on the threads,
such that the FW would barely turn. Probably turned the wheel the wrong way, or the FW was really stuck. Still have the wheel as a memento.
You don't need a vise to break prongs on a Sun Tour remover.
Bill Kapaun is offline  
Likes For Bill Kapaun:
Old 10-01-19, 11:18 AM
  #17  
79pmooney
Senior Member
 
79pmooney's Avatar
 
Join Date: Oct 2014
Location: Portland, OR
Posts: 11,511

Bikes: (2) ti TiCycles, 2007 w/ triple and 2011 fixed, 1979 Peter Mooney, ~1983 Trek 420 now fixed and ~1973 Raleigh Carlton Competition gravel grinder

Mentioned: 119 Post(s)
Tagged: 0 Thread(s)
Quoted: 4000 Post(s)
Liked 2,883 Times in 1,874 Posts
Originally Posted by WizardOfBoz View Post
Bill's idea is a great one. The first law of BB removal though, is "Thou shalt maketh sureth that one knoweth the thread direction".

As a bit of practical advice, once you get your tool threaded onto the spindle, you can put the tool flats in a vice and use the frame as a wrench. Often easier.
That was my standard practice with my old UO-8 (except the DS cup had flats, not the splines). I'd hang the frame from the ceiling, grab the cup flats in the vice and turn (both to install and remove). French threads, ie self-loosening if they were not very tight. Quite and operation.
79pmooney is offline  
Old 10-01-19, 11:43 AM
  #18  
B.C.Bikes
Junior Member
 
Join Date: Sep 2019
Location: West Midlands, England
Posts: 10

Bikes: Cinelli Nemo TIG w/ Campy S.R., Cotic BFE, Brompton, Pashley Unicycle, Sunday BMX, plenty of old and vintage bits and bobs.

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Liked 0 Times in 0 Posts
Leverage is your friend. A big bar or extender from a spanner or socket drive will help enormously. A bit of penetrating fluid on the joints might be of use also.
B.C.Bikes is offline  
Old 10-02-19, 07:57 AM
  #19  
HillRider
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Posts: 33,547

Bikes: '96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '20 Surly Midnight Special, All are 3x10. It is hilly around here!

Mentioned: 39 Post(s)
Tagged: 0 Thread(s)
Quoted: 1971 Post(s)
Likes: 0
Liked 984 Times in 679 Posts
Originally Posted by WizardOfBoz View Post
Experience is mistakes repeated many times....
A variation is: "Good judgement comes from experience. Experience comes from poor judgement".
HillRider is offline  
Likes For HillRider:
Old 10-02-19, 08:04 AM
  #20  
Dan Burkhart 
Senior member
 
Dan Burkhart's Avatar
 
Join Date: Oct 2004
Location: Oakville Ontario
Posts: 7,964
Mentioned: 23 Post(s)
Tagged: 0 Thread(s)
Quoted: 883 Post(s)
Liked 502 Times in 292 Posts
Originally Posted by HillRider View Post
A variation is: "Good judgement comes from experience. Experience comes from poor judgement".
My motto right there.
Dan Burkhart is offline  
Old 10-02-19, 09:02 AM
  #21  
the sci guy 
bill nyecycles
 
the sci guy's Avatar
 
Join Date: Mar 2013
Location: Houston TX
Posts: 3,330
Mentioned: 19 Post(s)
Tagged: 0 Thread(s)
Quoted: 781 Post(s)
Liked 338 Times in 184 Posts
Originally Posted by HillRider View Post
A variation is: "Good judgement comes from experience. Experience comes from poor judgement".
Love this. Definitely applicable in my diy bike work.
the sci guy is offline  
Old 10-02-19, 10:16 AM
  #22  
thumpism 
Bikes are okay, I guess.
 
thumpism's Avatar
 
Join Date: Jan 2015
Location: Richmond, Virginia
Posts: 8,675

Bikes: Waterford Paramount Touring, Giant CFM-2, Raleigh Sports 3-speeds in M23 & L23, Schwinn Cimarron oddball build, Marin Palisades Trail dropbar conversion, Nishiki Cresta GT

Mentioned: 64 Post(s)
Tagged: 0 Thread(s)
Quoted: 2532 Post(s)
Liked 1,932 Times in 1,292 Posts
Another wise man once said, "He don't know nothin' cause he never done nothin'."
thumpism is offline  
Likes For thumpism:
Old 10-02-19, 12:49 PM
  #23  
dabac
Senior Member
 
Join Date: Mar 2008
Posts: 8,688
Mentioned: 46 Post(s)
Tagged: 0 Thread(s)
Quoted: 1074 Post(s)
Liked 292 Times in 219 Posts
Originally Posted by Dan Burkhart View Post
Actually, the loosening direction is opposite to that. It is the drive side that is reverse threaded.
+1
Back when I still had to think about it, my clue was that with the wheels on the ground, and gravity as your helper, the wrench should point to the rear for loosening pedals, and forward for loosening BBs.
Originally Posted by Dan Burkhart View Post
I have a tool that holds the BB tool in place for removal and installation, but there are hacks that you can use to do it without the tool. We just had a thread on that here recently.
Ive looked a bit for a long enough bolt with the right thread, but so far Ive settled for a big C-clamp.
dabac is offline  
Old 10-02-19, 12:55 PM
  #24  
WizardOfBoz
Generally bewildered
 
WizardOfBoz's Avatar
 
Join Date: Aug 2015
Location: Eastern PA, USA
Posts: 2,955

Bikes: 2014 Trek Domane 6.9, 1999 LeMond Zurich, 1978 Schwinn Superior

Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 1115 Post(s)
Liked 303 Times in 227 Posts
Originally Posted by HillRider View Post
A variation is: "Good judgement comes from experience. Experience comes from poor judgement".
Aha. I should be gaining experience at a record rate, then.
WizardOfBoz is offline  
Old 10-02-19, 01:02 PM
  #25  
Bill Kapaun
Really Old Senior Member
 
Bill Kapaun's Avatar
 
Join Date: Feb 2007
Location: Mid Willamette Valley, Orygun
Posts: 13,332

Bikes: 87 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.

Mentioned: 19 Post(s)
Tagged: 0 Thread(s)
Quoted: 1574 Post(s)
Liked 911 Times in 649 Posts
Originally Posted by dabac View Post
.......Ive looked a bit for a long enough bolt with the right thread, but so far Ive settled for a big C-clamp.
8X1.0mm. I got mine at an an "older style" auto parts store with a good fastener selection.
The more common size is 8x1.25mm.
Bill Kapaun is offline  

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell or Share My Personal Information -

Copyright © 2023 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.