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 10-17-09, 10:55 AM   #1
ak08820
Senior Member
Thread Starter
 
Join Date: Jun 2008
Location: Central NJ
Bikes: MGX MTB, Fuji Supreme, Miyata 90 and a Trek 700 in the works
Posts: 551
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Crown Race

I need to get a headset for the Fuji Supreme I am working on.
Tange seems to be a good price/quality choice.
But, what is the difference between Tange Levin and Tange Passage models?
Which size would I need 26.4 or 27 for the crown race? What is the place of measurement for the 26.4 or 27 spec?
Actually, I only need the threaded ring that is about 6mm high and is knurled as that is the most rusted part. Wonder if i can get that alone. I see the steel top nut sold alone on Amazon by Niagra CW.

Thanks

Last edited by ak08820; 10-17-09 at 11:09 AM.
ak08820 is offline   Reply With Quote
Old 10-17-09, 12:21 PM   #2
JohnDThompson 
Old fart
 
JohnDThompson's Avatar
 
Join Date: Nov 2004
Location: Appleton WI
Bikes: Several, mostly not name brands.
Posts: 16,790
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 223 Post(s)
Headset parts are seldom available separately these days. If you do need to replace the crown race, you will need to measure the inside diameter of the crown race (dimension "L" below):

JohnDThompson is offline   Reply With Quote
Old 10-18-09, 08:04 AM   #3
ak08820
Senior Member
Thread Starter
 
Join Date: Jun 2008
Location: Central NJ
Bikes: MGX MTB, Fuji Supreme, Miyata 90 and a Trek 700 in the works
Posts: 551
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
I don't have the means to measure the dimension 'L'. Even if I take it out, the difference betwen 26.4mm and 27 is very small. I wonder if a Fuji expert can tell me whether I need 26.4 or 27 size. I may not replace the crown race, if I get a new headset, if I can get away with it. Though, I have done it once and it is not that difficult.
ak08820 is offline   Reply With Quote
Old 10-18-09, 08:24 AM   #4
Bianchigirll 
Bianchi Goddess
 
Bianchigirll's Avatar
 
Join Date: Apr 2009
Location: Camp Hill, PA
Bikes: Too many to list here check my signature.
Posts: 22,660
Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
Quoted: 87 Post(s)
the difference between 26.4 and 27 may seem small but it takes alot of filing to make it work.
also even if you aonly use them a few times a year a nice pair of digital calipers is a great investment. I just bought a set (I have had a standard non digital set for years) at harbor freight for 18$.
I bet Tmar knows or maybe scottrider
__________________
Bianchis '87 Sport SX, '90 Proto, '90 Campione del Fausto Giamondi Specialisma Italiano Mundo, '91 Boarala 'cross, '93 Project 3, '86 Volpe, '97 Ti Megatube, , '90 something Vento 603,

Others but still loved,; '80 RIGI, '80 Batavus Professional, '87 Cornelo, '09 Motobecane SOLD, '?? Jane Doe (still on the drawing board), '90ish Haro Escape
Bianchigirll is offline   Reply With Quote
Old 10-18-09, 08:28 AM   #5
JohnDThompson 
Old fart
 
JohnDThompson's Avatar
 
Join Date: Nov 2004
Location: Appleton WI
Bikes: Several, mostly not name brands.
Posts: 16,790
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 223 Post(s)
Quote:
Originally Posted by ak08820 View Post
I don't have the means to measure the dimension 'L'. Even if I take it out, the difference betwen 26.4mm and 27 is very small. I wonder if a Fuji expert can tell me whether I need 26.4 or 27 size. I may not replace the crown race, if I get a new headset, if I can get away with it. Though, I have done it once and it is not that difficult.
If you can find an identical headset to replace the worn parts on your current one, you will not need to change the crown race (assuming it is in decent condition). Otherwise, there is no substitute for measurement. Japanese headsets of that era were available in both JIS and ISO dimensions.
JohnDThompson is offline   Reply With Quote
Old 10-18-09, 08:49 AM   #6
ak08820
Senior Member
Thread Starter
 
Join Date: Jun 2008
Location: Central NJ
Bikes: MGX MTB, Fuji Supreme, Miyata 90 and a Trek 700 in the works
Posts: 551
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Quote:
Originally Posted by Bianchigirll View Post
the difference between 26.4 and 27 may seem small but it takes a lot of filing to make it work.
Yes, that is why I am trying to find out which one should I get. I meant that the diff is too small to measure with a ruler.
Quote:
Originally Posted by Bianchigirll View Post
also even if you only use them a few times a year a nice pair of digital calipers is a great investment. I just bought a set (I have had a standard non digital set for years) at harbor freight for 18$.
I bet Tmar knows or maybe scottrider
I was thinking of doing just that. Looks like they work good for you. I am having a bad experience with a buffing kit I got from there a couple of weeks ago. The buffing compound seems to have hardened up and the little cloth wheel disintegrates when I try to buff an aluminum stem.
ak08820 is offline   Reply With Quote
Old 10-18-09, 08:52 AM   #7
I_bRAD
Call me The Breeze
 
I_bRAD's Avatar
 
Join Date: Aug 2006
Location: Corbyville Ontario
Bikes: 2004 Litespeed Siena, 1996 Litespeed Obed, 1992 Miele (unknown model), 1982 Meile Uno LS.
Posts: 3,699
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Everyone always recommends a set of digital calipers, but unless you've got bad eyesight or own a battery factory just get the standard one... and when you go to use it in 2 years it will still work.
I_bRAD is offline   Reply With Quote
Old 10-18-09, 09:00 AM   #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: 29,121
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 180 Post(s)
Crown races are not universal even among the various models by a given manufacturter. Depending on the age or model of your frame it could be ISO (26.4 mm) or JIS (27.0).

Since "close enough" isn't good enough, take the fork to a bike shop and have them remove and measure the crown race. Then you will know what you have for future use.
HillRider 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 10:38 AM.