Originally Posted by
wrk101
+10 7 x 3 =21, but I highly doubt you have 21 unique (different) gears. And Big/Big and Small/small are not recommended due to cross chaining, along with a couple of other combos.
Quoting Winston Churchill responding to a charge of ending a sentence with a preposition, "This is the sort of pedantry up with which I will not put!"
BITD, gearing was invariably referred to by the product of the number of front chainrings and number of rear sprockets, ergo, 10-speed, 12-speed, 15-speed, etc.
