BTW If you have an alloy shell you don't want very low gears on an FM
unless you are a lightweight or a bit underpowered. The low gear
pawls work in slots cut into the shell, unlike the AW/FW/S5 where are
ramps in a continuous
band. http://bikesmithdesign.com/SA/fm-fw-left-ball-cup.jpg A
steel shell adequately supports these (for lack of a better word)
crenellations.
The old, thin, alloy shells flex enough that the pawls can bust these
off http://bikesmithdesign.com/SA/fm-alloy-oops.jpg
I have a spare alloy FM shell, but I'll be sneaking FW guts into it.
Mark Stonich
That is exactly what happened to mine Mark. I cried for days. Are you
shure you really need that extra FM shell? I understand that one can use an
AW shell for FM guts with a certain alteration. Is this the case? What needs
to be done?