Go Back  Bike Forums > Bike Forums > Classic & Vintage
Reload this Page >

Help me ID my Centurion Semi Pro-like frame

Notices
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.

Help me ID my Centurion Semi Pro-like frame

Old 01-31-23, 08:51 PM
  #1  
lonesomesteve
Senior Member
Thread Starter
 
lonesomesteve's Avatar
 
Join Date: Dec 2008
Location: Seattle, WA
Posts: 639
Mentioned: 16 Post(s)
Tagged: 0 Thread(s)
Quoted: 77 Post(s)
Liked 188 Times in 59 Posts
Help me ID my Centurion Semi Pro-like frame

This frame came to me as a nearly bare frame (headset included) a little over a year ago. I've set it up as a single speed randonneuse, and I've been enjoying the heck out of it. Until recently I had assumed it was an '80 - '81 Centurion Semi Pro, based on the color, the chrome lugs and dropouts, and what appears to be Tange Champion #1 tubing.



But recently I've noticed that quite a few details don't match with pictures of other Semi Pros I see online. For instance:
  • The head tube lugs on mine have a cut out that other Semi Pros don't have.

    Mine is on the left, the image on the right was a 1980 Semi Pro found online.
  • The fork crown is quite different than the crown on the 1980 SP shown above, though it is similar to the crown on some earlier SPs.

    Mine on the left. The one the '76 on the right is similar, but the lug is still different.
  • The dropouts and fork ends on mine are chromed like other Semi Pros, but they're Shimano, rather than the Suntour dropouts others have.

  • Mine has no brazed on cable guides or stops. Others seem to at least have a brazed on drive-side chain stay derailleur cable stop.
  • The top tube is ever-so-slightly downward sloping on mine (you can see it in the picture at the top of the post). I've never seen that on another Semi Pro.
  • Mine has no serial number, or at least none that I could find. Typically it's on the BB shell, but mine just has "Champion."

  • The head tube has no sign of ever having a Centurion head badge riveted on.
  • The seat post cluster has the same chromed wrap-around stay ends as others I see online, but the lug has that diamond shaped cutout that others don't have.

    Mine on the left. A 1976 found online on the right.
So anyway, not that it really matters much, but I'm curious what this frame is that I have. Superficially it's pretty Semi Pro-like, but if it is a Semi Pro, it's quite different from the others I've seen online and in person. If it's not a Semi Pro, then what is it?

And of course, I know that you frame detectives out there like a challenge, or like to show off when it's not enough of a challenge.

Thanks!

P.S. Apologies for all the poorly lit pictures!
lonesomesteve is offline  
Likes For lonesomesteve:
Old 01-31-23, 09:42 PM
  #2  
ehcoplex
Senior Member
 
Join Date: Jun 2021
Posts: 1,284

Bikes: '38 Schwinn New World, '72 Peugeot PX-10, ‘7? Valgan, ’79 Holdsworth Pro, ’80 Peugeot TH-8 tandem, '87 Trek 400T, ’97 Cannondale T900, '98 Peugeot Appalaches, ‘7? Raleigh Sports, ‘7? Raleigh Superbe, ‘6? Herc

Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 545 Post(s)
Liked 970 Times in 491 Posts
I can offer nothing, ID wise, but thatís a sweet looking ride!
ehcoplex is offline  
Likes For ehcoplex:
Old 01-31-23, 10:08 PM
  #3  
Andrew R Stewart 
Senior Member
 
Andrew R Stewart's Avatar
 
Join Date: Feb 2012
Location: Rochester, NY
Posts: 17,118

Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3789 Post(s)
Liked 2,935 Times in 1,797 Posts
Check out Japanese Steel (by William Bevington) or hang out in https://groups.google.com/group/class...es?hl=en?hl=en. If you do post photos in the Classic Rendezvous don't show the single speed drivetrain (At least the der hanger is still there and not hack sawed off). Andy (who has a 1974 Fuji Finest and think that these early Japanese bikes were under appreciated)

I should add that these higher end bikes were often outsourced to smaller batch builders and the details, bits and pieces, can vary through the number of batch productions in any one year.
__________________
AndrewRStewart

Last edited by Andrew R Stewart; 01-31-23 at 10:15 PM.
Andrew R Stewart is offline  
Likes For Andrew R Stewart:
Old 02-01-23, 10:15 PM
  #4  
unworthy1
Stop reading my posts!
 
unworthy1's Avatar
 
Join Date: Sep 2004
Posts: 12,344
Mentioned: 81 Post(s)
Tagged: 0 Thread(s)
Quoted: 1177 Post(s)
Liked 718 Times in 559 Posts
I'd say the diamond in the headlug and seat lug sockets points to a Miyata or Miyata-made Univega, and yes...they are also nice frames!
unworthy1 is offline  
Likes For unworthy1:
Old 02-02-23, 12:12 PM
  #5  
clubman 
Phyllo-buster
 
clubman's Avatar
 
Join Date: Jan 2010
Location: Nova Scotia
Posts: 8,546

Bikes: roadsters, club bikes, fixed and classic

Mentioned: 127 Post(s)
Tagged: 0 Thread(s)
Quoted: 2200 Post(s)
Liked 1,769 Times in 1,092 Posts
Centurion also used Shimano drops on some of their top-tier bikes.

clubman is offline  
Old 02-02-23, 02:04 PM
  #6  
romperrr 
Pedal to the medal
 
Join Date: Sep 2012
Location: The Arsenal of Democracy
Posts: 1,183

Bikes: 1991 Team Miyata Track, 1992 Lemond Alpe d'Huez, 19?? Schwinn High Serra, 1982 Trek 614, 198X Raleigh Alyeska

Mentioned: 17 Post(s)
Tagged: 0 Thread(s)
Quoted: 242 Post(s)
Liked 109 Times in 73 Posts
Originally Posted by unworthy1 View Post
I'd say the diamond in the headlug and seat lug sockets points to a Miyata or Miyata-made Univega, and yes...they are also nice frames!
My thought as well. I know Miyata built bikes for Univega, but I've never seen a univega with crhomed lugs (italavega on the other hand...) sorry I can hep further. It does, indeed, look like one sweet ride.
romperrr is offline  
Old 02-02-23, 10:56 PM
  #7  
unworthy1
Stop reading my posts!
 
unworthy1's Avatar
 
Join Date: Sep 2004
Posts: 12,344
Mentioned: 81 Post(s)
Tagged: 0 Thread(s)
Quoted: 1177 Post(s)
Liked 718 Times in 559 Posts
I have this very vague recollection that there may have been a Nishiki model (or 2) that also had main lugs pierced with the diamond shape (which was an "homage" to De Rosa, I guess) but have nothing by way of exact info, if this is even accurate...Miyata/Univega definitely did it.
unworthy1 is offline  
Old 02-03-23, 08:32 AM
  #8  
himespau 
Senior Member
 
himespau's Avatar
 
Join Date: Jun 2008
Location: Louisville, KY
Posts: 13,222
Mentioned: 32 Post(s)
Tagged: 0 Thread(s)
Quoted: 3718 Post(s)
Liked 2,532 Times in 1,508 Posts
Whatever it is, it looks pretty.
himespau 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 - Do Not Sell or Share My Personal Information -

Copyright © 2023 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.