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


Go Back   > >

Classic & Vintage This forum is to discuss the many aspects of classic and vintage bicycles, including musclebikes, lightweights, middleweights, hi-wheelers, bone-shakers, safety bikes and much more.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 01-25-09, 05:37 PM   #1
cuevélo
Senior Member
Thread Starter
 
Join Date: Jun 2007
Location: The Only Village in the World So Named
Bikes: Mid '70s Cuevas, '91 Greg Lemond Maillot Jaune
Posts: 136
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Cinelli handlebar clamp sizes

I have a an older (mid '70s?) Cinelli handlebar that I am unsure of the clamp diameter. My guess would be that it is 26.4, but I have measured it differently.

With a set of digital calipers, the reinforced portion of the bar is 26.13mm on the non-knurled part (outside of where the stem clamps) and is 26.20mm on the knurled section where the stem clamps.

Does anybody know if these numbers match up with the 26.4 mm Cinelli standard? Or is theree some 26.2 mm standard that I haven't heard about?

It just seems odd to me because I measured a 26.0 mm bar at 26.00 mm.
cuevélo is offline   Reply With Quote
Old 01-25-09, 06:41 PM   #2
repechage
Senior Member
 
Join Date: Jun 2006
Bikes:
Posts: 10,840
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 63 Post(s)
Quote:
Originally Posted by cuevélo View Post
I have a an older (mid '70s?) Cinelli handlebar that I am unsure of the clamp diameter. My guess would be that it is 26.4, but I have measured it differently.

With a set of digital calipers, the reinforced portion of the bar is 26.13mm on the non-knurled part (outside of where the stem clamps) and is 26.20mm on the knurled section where the stem clamps.

Does anybody know if these numbers match up with the 26.4 mm Cinelli standard? Or is theree some 26.2 mm standard that I haven't heard about?

It just seems odd to me because I measured a 26.0 mm bar at 26.00 mm.
Middle 70's will still have the ornate crest(s) depending on the model, one may be different. there was a minor change after the 1R stem was introduced to make that stem work better, so the first thing is to verify the date. Cinelli outline typography with the winged C is very late 70's at the earliest. The bars with the star are 80's and are the most likely to be the 26.0 type.

Otherwise it could be mfg. tolerances.
repechage is offline   Reply With Quote
Old 01-25-09, 07:33 PM   #3
cuevélo
Senior Member
Thread Starter
 
Join Date: Jun 2007
Location: The Only Village in the World So Named
Bikes: Mid '70s Cuevas, '91 Greg Lemond Maillot Jaune
Posts: 136
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
It doesn't have the ornate crest.

The thing is that it doesn't fit a Cinelli 26.0 mm X/A stem. There was an X/1 stem on it, but I took it off, and now the binder bolt just spins. I think that the X/1 worked like a seat binder bolt that bites in on one side, only the side it bites in on doesn't have an allen wrench fitting.

I'll probably just end up filling the 26.0 until it fits.
cuevélo is offline   Reply With Quote
Old 01-25-09, 08:53 PM   #4
Charles Wahl
Disraeli Gears
 
Charles Wahl's Avatar
 
Join Date: Jul 2007
Location: NYC
Bikes:
Posts: 3,095
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
FWIW, I bought a set of new-logo 66 bars and 1A stem in 1985 that are 26.4, and the diameter of the sleeve is spot-on. I have a Nitto bar that's supposed to be 26.0 and measures 26.1.
Charles Wahl is offline   Reply With Quote
Old 01-25-09, 09:05 PM   #5
luker
juneeaa memba!
 
Join Date: Oct 2003
Location: boogled up in...Idaho!
Bikes: Crap. The box is not big enough...
Posts: 5,628
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
26.2 for a used bar is not unheard of...depends on how it was installed, and how many times it was installed. The outside diameter of the bar should be a little less than 26.4, I think, to get it into the stem (especially a problem with the 1R stems.)
luker is online now   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 06:17 PM.