ok, i thought i had this nailed down, but now im a little stumped and doubtful...
TA bb cups typically come in 3 forms - a single ring, double ring, or no ring engraved around the spindle hole. i had previously thought that this indicated whether the cup was french, british or italian threads, but...
1. i know single ring engraving denotes british threading, as ive seen cup pairs with such engraving packaged as "ref:709w" - and a "w" in a TA ref: number indicates british threading.
2. i can thread the same lockring onto adjustable cups i have - one is single ring, one double.
3. my guerciotti has cups with no engraving. (yes, i know, italian bike with french components, im very naughty... but never mind that :) )
so, here i am, stumped - and while all the TA stuff i have indicates that TA bb cups were available in french, british, italian and swiss (argh!) threading, none of it says which is which...
anyone capable of clearing this up?
thanks!
-joel
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joel metz : magpie@messengers.org : http://www.blackbirdsf.org
bike messengers worldwide : ifbma : http://www.messengers.org
po box 191443 san francisco ca 94119-1443 usa
==
i know what innocence looks like - and it wasn't there,
after she got that bicycle...