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Record hubs: Is this the English groove?

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Record hubs: Is this the English groove?

Old 03-20-19, 08:32 PM
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deux jambes 
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Record hubs: Is this the English groove?

I hear that early hubs were without textual designation regarding thread pitch. And that in these cases no groove along the flange indicate either Italian or French threads while a single groove indicates English.

Just after the threading in the hub pictured here, is a groove. Is this the groove were talking about?


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Old 03-20-19, 08:45 PM
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repechage
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That is Italian.
the grooves are machined beyond where the freewheel stops, between that and the spoke flange.
and yes the secret decoder is plain, Italian, one groove English, double groove French.
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Old 03-20-19, 08:46 PM
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Like this one...


20190320_214127 by L Travers, on Flickr
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Old 03-20-19, 08:57 PM
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Another picture, borrowed from JohnDThompsons reply to a thread from 2009:

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Old 03-20-19, 09:08 PM
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So... the recess directly behind the threads is a bit of machined relief in all versions. But further back from that, right at the base of the flange is where wed find a single narrow groove (English), two grooves (French), or no groove at all (Italian).

And while I was hoping that the hub I posted had English threading, a little detail I overlooked before buying, it turns out its Italian! No biggie. Ill make do with it...

Makes sense now. Thank you guys.

Last edited by deux jambes; 03-20-19 at 09:36 PM.
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Old 03-20-19, 09:37 PM
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repechage
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Originally Posted by CV-6 View Post
Like this one...


20190320_214127 by L Travers, on Flickr
a correctly laced wheel too. Just the oil clip is on vacation.
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Old 03-21-19, 07:28 AM
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I've run English threaded freewheels on Campy Italian threaded hubs before with no problems.
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Old 03-21-19, 08:10 AM
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Originally Posted by deux jambes View Post
[left]So... the recess directly behind the threads is a bit of machined relief in all versions. But further back from that, right at the base of the flange is where wed find a single narrow groove (English), two grooves (French), or no groove at all (Italian).
Almost. Both French and Italian thread hubs lack the incised groove:


Source: Sutherland's 4th Edition
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Old 03-21-19, 08:18 AM
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Originally Posted by nomadmax View Post
I've run English threaded freewheels on Campy Italian threaded hubs before with no problems.
Me too, for the most part. With one italian threaded hub, I really had to work the standard freewheel back and forth the first time I threaded it. Had to use the park tool and a wrench to get it on. After I got it on the first time, it was fine.
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