Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

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.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 08-06-08, 01:36 PM   #1
agentmm
Junior Member
Thread Starter
 
Join Date: Nov 2007
Bikes:
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Weird Crank???

Hello,

I am new to this forum so please feel free to blast this post if it's in the wrong section etc.

I have an old ROAD KING bike which I am fixing up and the cranks are completely weird on it. The crank arm has a bolt that runs through it and when I remove the nut on this bolt, nothing really happens. The bolt seems solid through the arm. Also, the typical dust cap is nothing more then a solid circle. I can't access it, remove it or move it.

I am thinking that maybe the arms were pressed onto the bottom bracket but I'm not sure.

Any help removing the crank would be greatly appreciated.
I have attached a photo bucket link so that you can see 2 pictures of said crank. If you need more pics etc. please let me know.

http://s67.photobucket.com/albums/h288/agentmm/CRANK/

Thanks in advance,

MM
agentmm is offline   Reply With Quote
Old 08-06-08, 01:47 PM   #2
Little Darwin
The Improbable Bulk
 
Little Darwin's Avatar
 
Join Date: Jul 2005
Location: Wilkes-Barre, PA
Bikes: Many
Posts: 8,401
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
I can't see the photos due to firewall filtering at work, but by your description, I am guessing that you have a cottered crank.

If so, this page will tell you much of what you need to know:

http://www.sheldonbrown.com/cotters.html

Edit: Basically the cotter is the "bolt" that had the nut on it, and it needs to come out of the crank then the crank will come off of the spindle.
__________________
Slow Ride Cyclists of NEPA

People do not seem to realize that their opinion of the world is also a confession of character.
- Ralph Waldo Emerson
Little Darwin is offline   Reply With Quote
Old 08-06-08, 02:05 PM   #3
agentmm
Junior Member
Thread Starter
 
Join Date: Nov 2007
Bikes:
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
that is soooooo sweet....

thank you
agentmm is offline   Reply With Quote
Old 08-06-08, 02:06 PM   #4
04jtb
Senior Member
 
04jtb's Avatar
 
Join Date: Mar 2007
Location: West Dorset, UK
Bikes: 1983 Dawes Galaxy, 2006 Raleigh Airlite, 1982 Sun Solo (fixed)
Posts: 908
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
+1 to Little Darwin
__________________
Quote:
Originally Posted by cc700 View Post
i jam my thumbs up and back into the tubes. this way i can point my fingers straight out in front to split the wind and attain an even more aero profile, and the usual fixed gear - zen - connectedness feeling through the drivetrain is multiplied ten fold because my thumbs become one with the tubing.
A group for all Dawes Galaxy owners to give and recieve information about them
http://flickr.com/groups/dawes_galaxy/
04jtb is offline   Reply With Quote
Old 08-06-08, 02:26 PM   #5
Cannondaler
Senior Member
 
Cannondaler's Avatar
 
Join Date: Dec 2007
Location: Atlantic Beach, FL
Bikes: Cannondale F600sl, Windsor Falkirk Carbon
Posts: 205
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
You need to gently tap out the cotter with a small hammer being careful not to damage the threads.
Cannondaler is offline   Reply With Quote
Old 08-06-08, 02:37 PM   #6
bikeman715
Senior Member
 
bikeman715's Avatar
 
Join Date: Mar 2008
Location: Salinas , Ca.
Bikes: Bike Nashbar AL-1 ,Raligh M50 , Schwinn Traveler , and others
Posts: 2,436
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
the best to remove it is by a cotter pin press. that way you can reuse the pin.
bikeman715 is offline   Reply With Quote
Old 08-06-08, 02:57 PM   #7
orangepaint
Senior Member
 
orangepaint's Avatar
 
Join Date: Jul 2007
Location: Vangroovy, BC
Bikes:
Posts: 379
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
If you use a wood block and a hammer, it doesn't mushroom the tip of the cotter pin.
orangepaint is offline   Reply With Quote
Old 08-06-08, 04:09 PM   #8
HillRider 
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
Posts: 28,917
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 95 Post(s)
Quote:
Originally Posted by Cannondaler View Post
You need to gently tap out the cotter with a small hammer being careful not to damage the threads.
Gently? Come on, cotters need a LOT of force to remove and gently won't do it. The OP need to support the crank arm with a pipe or block of wood with a relief hole while whaling away with a BIG hammer to remove the cotter.
HillRider is offline   Reply With Quote
Old 08-06-08, 07:52 PM   #9
Jeff Wills
Insane Bicycle Mechanic
 
Jeff Wills's Avatar
 
Join Date: Mar 2008
Location: other Vancouver
Bikes:
Posts: 7,980
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 24 Post(s)
Quote:
Originally Posted by HillRider View Post
Gently? Come on, cotters need a LOT of force to remove and gently won't do it. The OP need to support the crank arm with a pipe or block of wood with a relief hole while whaling away with a BIG hammer to remove the cotter.
Well... cotters are pretty soft. Whacking it with a hammer with any amount of force will usually beat the threads to a pulp. Better make sure you have replacements in hand before you try it. They're pretty cheap: http://www.bikepartsusa.com/bikeparts/item/01-98554/ . I think you have the most common size: 9.5mm diameter, but measure to make sure.
__________________
Jeff Wills

Comcast nuked my web page. It will return soon..
Jeff Wills is offline   Reply With Quote
Old 08-11-08, 11:10 AM   #10
agentmm
Junior Member
Thread Starter
 
Join Date: Nov 2007
Bikes:
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thank you for the posts...
I removed the pins and I think they are in great shape so I will attempt to re-use them and if not, I'll check bikeparts out...

thanks again for your time
agentmm is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 04:19 AM.