At 09:25 -0400 08.18.2006, Charlie Young wrote:
>Pure speculation: I'm wondering if the tensioner on the JT that
>initiated this discussion was intended to allow the use of a double
>chainring with a non-fixed SA hub. Positioning the tension arm idler
>at the center of the two chainrings would probably prevent the chain
>from unshipping.
possibly - but it could also be used simply because it would make tossing a hub gear in there without changing the chain from the cyclo setup - long arm tensioner takes up a lot of slack - which id think to be more likely, with the vertical dropout setup. it would almost be silly to swap back and forth from a cyclo (probably 5-speed) to a hub gear (most likely 3-speed) setup with the intention of still having front derailleur capability, though, given that a sa a-w would give you the rough equivalent of a 13/18/24 freewheel block, with a 18t cog...
not that silly has ever stopped anyone before :)
-joel
--
joel metz : magpie@blackbirdsf.org : http://www.blackbirdsf.org/
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==
i know what innocence looks like - and it wasn't there,
after she got that bicycle...