Bicycle Mechanics - Freewheel to freehub conversion adaper?

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RainmanP
11-19-03, 12:42 PM
For those of you who have been around BF for a while here is another of my "Where does he come up with this stuff?" questions. Has anyone ever seen or heard of some kind of adapter that threads on freewheel threads, but allows you to use maybe 3 or 4 Shimano cassette cogs and lockring? Or perhaps just accepts a standard 7 sp freehub body? I know it sounds bizarre, but hear me out. I have several freewheel-hubbed wheels that are in good shape. I have freewheels, but some are getting worn on the cogs I use most. Though they are available, replacement freewheel cogs get harder to find. I was thinking that the ability to use standard cassette cogs would solve this problem. Since this is primarily for use on my commuters I don't need a lot of gears. In fact, I often ride fixed gear or single speed, but there are occasions when it's nice to have some choices, like the 20-25 mph winds we have been having the last few days. Google searches haven't turned up anything so I thought I would ask.
Thanks,
Raymond

Dave Stohler
11-19-03, 02:53 PM
http://www.thethirdhand.com/index.cgi
miamijim
11-20-03, 05:36 PM
Dave, you provided the link becasue such an adapter is located there or........

I'm still trying to figure out what axial compliance has to do with the lateral movement of jockey wheels.....

RainmanP
11-20-03, 07:48 PM
I assume Dave was suggesting that The Third Hand, now known as Loose Screws (loosescrews.com) is a often a likely source of obsolete and/or unusual things. I know it is one of the first places I always check. I doubt there is such a thing since it would probably be of very limited interest. Thanks, anyway, Dave.
Regards,
Raymond
Dave Stohler
11-21-03, 06:23 AM
Lotsa cogs for your old freewheels there. You'll probably find what you need.


I'm still trying to figure out what axial compliance has to do with the lateral movement of jockey wheels

Axial compliance (angular compliance in the y-axis) results in lateral movement in the y-axis (here, x-axis being forward, y being left-right). This lateral movement is a function of the distance from the axis of rotation (and of compliance). A jockey wheel with lateral compliance merely slides left-right, wheras one with axial compliance actually "angles" to achieve the same.