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 10-04-07, 08:58 PM   #1
duongrn
Senior Member
Thread Starter
 
Join Date: Sep 2005
Bikes:
Posts: 54
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
What type of crown race, baseplate do I need with Chris King Headset

I've got a Easton EC 90 curve carbon fork.

Also have threadless Chris King headset that was missing the crown race (baseplate) so I ordered one of the Chris King website. It is a 1" stainless steel headset.

Problem is when I try to put the baseplate at the bottom of the steerer tube, it appears that there is a larger section at the bottom of the steerer tube.

Do I "force" the crown race to the very bottom, or is there a different size crown race I need to order.

Thanks in advance.
duongrn is offline   Reply With Quote
Old 10-04-07, 09:06 PM   #2
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: 28,776
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 36 Post(s)
Crown races are usually a fairly tight fit and need some effort to seat them. In fact several bike tool manufacturers make slide hammers just for this purpose. The Easton fork should have an ISO sized crown race seat so the CK base plate should be the right one.
HillRider is offline   Reply With Quote
Old 10-04-07, 09:12 PM   #3
Iowegian
Senior Member
 
Iowegian's Avatar
 
Join Date: Dec 2005
Location: Boulder, Colo
Bikes:
Posts: 1,823
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 17 Post(s)
There are 2 standard sizes for headset crown seat OD dimensions (ISO and JIS) but I think almost all modern bikes use the ISO standard.

Is the fork brand new? Is the crown seat machined? The race is supposed to be a press fit onto the seat so it is a tight fit. Some folks freeze the fork and heat the crown race so it just 'drops on'. Other folks use a piece of PVC pipe with the correct dimensions to pound the race on.

If it was me and that was my new carbon fork I'd take it the LBS. Buy a box of bar tape or a couple of new tubes and they'll probably put it on for free.
Iowegian is offline   Reply With Quote
Old 10-05-07, 07:07 AM   #4
cavernmech
Jonnys ilegitimate Father
 
cavernmech's Avatar
 
Join Date: Apr 2005
Location: toronto
Bikes: too many too list
Posts: 2,994
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Installing the King crown race requires a King installation tool. It is basically a big aluminum washer that prevents the conical bearing seat on the race from getting damaged. I wouldn't suggest installing it without this.
cavernmech is offline   Reply With Quote
Old 10-05-07, 07:23 AM   #5
well biked 
biked well
 
well biked's Avatar
 
Join Date: Jul 2005
Bikes:
Posts: 7,065
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
I installed my CK baseplate with a 1 1/8" ID PVC pipe on my 1 1/8" fork, no problems. But with a carbon fork, I'd take it to a bike shop and let them do it for a few bucks-
well biked 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 11:49 PM.