At 9/2/2007 08:39 PM -0700, mark assaf wrote:
>You hit the nail on the head - someone emailed me with a 3 speed
>freewheel, an Atom, and that seems perfect
As long as it has English threads.
> - the gears are exactly what an old fart needs - a 19 for
> cruising, a 21 for hills, plus a 16 for those rare occasions I feel spry.
The most common (at least in the US) Cyclo Benelux is 15-19-23. I've
never even seen a closer ratio one. (In my case, the 15 will be
purely decorative. :-))
>Not sure what you mean about interchangability - how can a spined
>and a threaded cog be interchanged? The clubman has threads on it
>for the cog - I had never seen one like that on any of the other 12
>3 speeds I have.
I meant that it only takes a few minutes to swap drivers between hubs. Many older hubs have had the drivers replaced as they do wear out. So I don't consider replacing them to be much less "original" than using newer tires or chains.
I'm all for any modification that lets us old guys keep riding, at
least any that can be easily undone. But with a derailleur on a
Clubman, no one is going to notice that the driver isn't original.
>Also - that two cogs on at the same time - that looks pretty ballsy!
>Does that really work!?!?
Two on a threaded driver sounds iffy but two on a splined one is rock
solid. The only thing to watch out for is that some older SA 22t
cogs have an odd tooth shape, very "pointy" when viewed from the
side. These will skip when used with a derailleur. I have the right
type, NOS, if you want one.
>I'd love to try that, however I have to stick with 1/8 chain to
>preserve the front chain wheel.
Could be a problem with some older chains, but not with newer 1/8" ones. If you try the idea with one cassette cog, use a SRAM chain. With two dished 3 speed cogs any newer chain will work.
Mark Stonich;
BikeSmith Design & Fabrication
5349 Elliot Ave S. - Minneapolis. MN 55417
Ph. (612) 824-2372 http://bikesmithdesign.com
http://mnhpva.org