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.

Crown Race Seat Diameter

Old 01-11-19, 11:08 AM
  #1  
TiHabanero
Senior Member
Thread Starter
 
Join Date: Nov 2012
Posts: 2,191
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 608 Post(s)
Likes: 0
Liked 9 Times in 9 Posts
Crown Race Seat Diameter

Have any of you seen a 1" road fork with a 30mm crown race seat diameter? My understanding is 26.4mm and 27.0mm are the two standards for 1 inch forks.
TiHabanero is offline  
Old 01-11-19, 11:59 AM
  #2  
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 40,880

Bikes: 8

Mentioned: 182 Post(s)
Tagged: 0 Thread(s)
Quoted: 6545 Post(s)
Likes: 0
Liked 52 Times in 48 Posts
2nd guessing..

Cut it down if you cannot put a standard headset on it..


perhaps they left it oversize, so you can choose ISO or JIS headsets.. ..and cut the crown race to suit.
fietsbob is online now  
Old 01-11-19, 12:14 PM
  #3  
Andrew R Stewart 
Senior Member
 
Andrew R Stewart's Avatar
 
Join Date: Feb 2012
Location: Rochester, NY
Posts: 11,445

Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Raleigh Pro, Trek Cycle Cross, Mongoose tomac ATB, GT Bravado ATB, JCP Folder

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1675 Post(s)
Likes: 0
Liked 7 Times in 6 Posts
I suppose one could make a 1" steerer's crown seat at 30mm. But why? Only reason I see is to be able to use a 1" steerer in a frame designed for a 1 1/8" system. But then you'd also have to address the upper stack mismatch too. Andy
__________________
AndrewRStewart
Andrew R Stewart is offline  
Old 01-11-19, 01:18 PM
  #4  
TiHabanero
Senior Member
Thread Starter
 
Join Date: Nov 2012
Posts: 2,191
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 608 Post(s)
Likes: 0
Liked 9 Times in 9 Posts
The reason for the question is I was looking at the specs on a 1" headset and it shows the cups fit a 30.1 head tube and the crown race fits 30. Doesn't make sense to me.
TiHabanero is offline  
Old 01-11-19, 03:00 PM
  #5  
JohnDThompson 
Old fart
 
JohnDThompson's Avatar
 
Join Date: Nov 2004
Location: Appleton WI
Posts: 20,228

Bikes: Several, mostly not name brands.

Mentioned: 103 Post(s)
Tagged: 0 Thread(s)
Quoted: 1616 Post(s)
Liked 9 Times in 8 Posts
Doesn't make sense to me, either. Can you post a link to the specs?
JohnDThompson is offline  
Old 01-11-19, 03:35 PM
  #6  
TiHabanero
Senior Member
Thread Starter
 
Join Date: Nov 2012
Posts: 2,191
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 608 Post(s)
Likes: 0
Liked 9 Times in 9 Posts
Friend of mine asked me to look into this headset: https://www.jensonusa.com/Cane-Creek...dition-Headset

I told him to get it and order the correct crown race from me if it really is 30mm.
TiHabanero is offline  
Old 01-11-19, 04:20 PM
  #7  
Andrew R Stewart 
Senior Member
 
Andrew R Stewart's Avatar
 
Join Date: Feb 2012
Location: Rochester, NY
Posts: 11,445

Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Raleigh Pro, Trek Cycle Cross, Mongoose tomac ATB, GT Bravado ATB, JCP Folder

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1675 Post(s)
Likes: 0
Liked 7 Times in 6 Posts
If you look on the right side of the page at the box that states the color and size specs you'll see a reference to "EC30/26" as in the lower HT ID is 30 and the crown seat is 26 (actually 26.4). The "30mm is a typo in the text portion of the page. You could also go directly to the Cane Creek site and double check. Andy
__________________
AndrewRStewart
Andrew R Stewart is offline  
Old 01-11-19, 04:27 PM
  #8  
HillRider 
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Posts: 31,401

Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!

Mentioned: 32 Post(s)
Tagged: 0 Thread(s)
Quoted: 1109 Post(s)
Likes: 0
Liked 2 Times in 2 Posts
I looked at Jenson's web site and that headset crown race description in the summary table has to be a typo. The actual order line reads: Gold EC30/25.4/EC30/26, Straight. The press in cups are 30 mm for a 1" (25.4 mm) steerer and the crown race is 26.4.

Hmmm, Andy types faster than I do but we certainly agree.
HillRider is offline  
Old 01-11-19, 07:28 PM
  #9  
TiHabanero
Senior Member
Thread Starter
 
Join Date: Nov 2012
Posts: 2,191
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 608 Post(s)
Likes: 0
Liked 9 Times in 9 Posts
I called them and spoke to somebody and pointed out the 30mm spec. Not sure that person understood what I was talking about. Just wanted to be sure I was not mistaken on the two sizes for crown races. My friend, Tim, just has to have gold and the 110 Cane Creek. I told him he can get gold in Chris King, too, but he wanted this headset for some reason. My guess is because he has a Cane Creek headset already and the wheels he had from them were incredibly durable. Told him a Chris King from me won't cost that much more and really is way over the top well made.
TiHabanero is offline  

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


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.