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

Ofmega hub question

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.

Ofmega hub question

Old 11-16-06, 10:14 PM
  #1  
Senior Member
Thread Starter
 
recumbenttoad's Avatar
 
Join Date: Jul 2006
Posts: 319
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Ofmega hub question

I may not have phrased my search parameters correctly when looking for an answer, which is why I am asking this question. I have a set of Ofmega hubs that take a freewheel and a Campy C Record set that takes a freewheel. The freewheel(s) I have thread right on the Campy C Record hub but on the Ofmega it will thread on a bit then quit. The threads didn't look bad when I checked them out. Are they supposed to be the same thread? Thanks.
recumbenttoad is offline  
Old 11-17-06, 02:13 AM
  #2  
Senior Member
 
Join Date: Dec 2005
Location: Auld Blighty
Posts: 2,244

Bikes: Early Cannondale tandem, '99 S&S Frezoni Audax, '65 Moulton Stowaway, '52 Claud Butler, TSR30, Brompton

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Liked 1 Time in 1 Post
English and Italian freewheel threads are almost but not quite the same, possibly your problem. google for details.
LWaB is offline  
Old 11-17-06, 09:38 AM
  #3  
feros ferio
 
John E's Avatar
 
Join Date: Jul 2000
Location: www.ci.encinitas.ca.us
Posts: 21,765

Bikes: 1959 Capo Modell Campagnolo; 1960 Capo Sieger (2); 1962 Carlton Franco Suisse; 1970 Peugeot UO-8; 1982 Bianchi Campione d'Italia; 1988 Schwinn Project KOM-10;

Mentioned: 44 Post(s)
Tagged: 0 Thread(s)
Quoted: 1384 Post(s)
Liked 1,295 Times in 820 Posts
That is likely the issue. English and Italian use the same number of threads per inch and the same diameter, but the thread sharpness or cut angle differs. This is why one should not swap back and forth between the two.

Look at the freewheels and the hubs for inscriptions such as "BSC," meaning ISO or English threading.

The 1980 or 1981 Ofmega rear hub and Regina America freewheel that came with my Bianchi definitely seem to be Italian-threaded, so I leave them paired together (currently on the 1959 Capo) and swap my various Japanese freewheels around on other hubs I own.
__________________
"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
John E 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread

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

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.