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#1
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freewheels and threaded hubs....
will any ACS, Dicta, or Shimano single speed freewheel thread onto a
Campy Pista, Shimano Dura Ace, or Phil Wood track hub? |
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#2
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freewheels and threaded hubs....
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#3
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freewheels and threaded hubs....
On 24 Nov 2005 06:34:01 -0800, "Qui si parla Campagnolo"
wrote: Yep, the ones made for that thread pitch. Track hubs are just normal freewheel pitch sections, made shorter so the reverse thread lockring can go on. It is still tall enough for a single speed freewheel. Isn't it more like freewheel threads are track threads made longer and without the lockring thread? Seems like the track thread was there first -- viz the old Sturmeys and coasters with thread to screw the cog on, rather than the newer splines. Incidentally, why aren't there Fixie hubs with Sturmey & co splines instead of the archaic threaded system? I mean, the cogs are a lot cheaper, they have built-in chainline adjustment with the raised shoulders and the two 1 mm spacers, and it's just an objectively better design, especially for fastening on cogs that might get reverse pressure. They're not used on hundreds of millions of coaster brake hubs for nothing, after all. Jasper |
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freewheels and threaded hubs....
On Sun, 27 Nov 2005 02:25:18 +0000, Jasper Janssen wrote:
Incidentally, why aren't there Fixie hubs with Sturmey & co splines instead of the archaic threaded system? There is one. I forget the brand, but saw posts about it here a while back. The pictures on the web site made it look like just the hub you are looking for. -- David L. Johnson __o | Let's be straight here. If we find something we can't _`\(,_ | understand we like to call it something you can't understand, or (_)/ (_) | indeed even pronounce. -- Douglas Adams |
#5
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freewheels and threaded hubs....
Jasper Janssen writes:
Yep, the ones made for that thread pitch. Track hubs are just normal freewheel pitch sections, made shorter so the reverse thread lockring can go on. It is still tall enough for a single speed freewheel. Isn't it more like freewheel threads are track threads made longer and without the lockring thread? Seems like the track thread was there first -- viz the old Sturmeys and coasters with thread to screw the cog on, rather than the newer splines. Incidentally, why aren't there Fixie hubs with Sturmey & co splines instead of the archaic threaded system? I mean, the cogs are a lot cheaper, they have built-in chainline adjustment with the raised shoulders and the two 1 mm spacers, and it's just an objectively better design, especially for fastening on cogs that might get reverse pressure. They're not used on hundreds of millions of coaster brake hubs for nothing, after all. This type of attachment only works well on centered chain lines and only on steel. Slide-on sprockets that we have on cassettes today were formerly secured by screwing on the last sprocket to prevent fretting damage that would otherwise occur. It was only recently that someone devised the detente style cover-nut that holds today's gear clusters together. Had someone invented that forty years ago, you probably wouldn't need to ask. Progress is slow. Jobst Brandt |
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freewheels and threaded hubs....
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#7
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freewheels and threaded hubs....
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#8
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freewheels and threaded hubs....
On Sat, 26 Nov 2005 21:39:59 -0500, "David L. Johnson"
wrote: On Sun, 27 Nov 2005 02:25:18 +0000, Jasper Janssen wrote: Incidentally, why aren't there Fixie hubs with Sturmey & co splines instead of the archaic threaded system? There is one. I forget the brand, but saw posts about it here a while back. The pictures on the web site made it look like just the hub you are looking for. It'd probably still be cheaper to take a coaster brake hub, remove the innards, and weld the driver solid. Jasper |
#9
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freewheels and threaded hubs....
Jasper Janssen wrote:
Are threaded track cogs typically made of aluminum? No, but track hubs are. -- MfG/Best regards helmut springer |
#10
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freewheels and threaded hubs....
David L. Johnson wrote:
On Sun, 27 Nov 2005 02:25:18 +0000, Jasper Janssen wrote: Incidentally, why aren't there Fixie hubs with Sturmey & co splines instead of the archaic threaded system? There is one. I forget the brand, but saw posts about it here a while back. The pictures on the web site made it look like just the hub you are looking for. Miche makes the splined system. I have no idea if it is the same spline pattern as the sturmey. Baird |
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