+1 to CrankyMonkey's post.
I'm a long time advocate of the 1x9 set up, it is simple and effective.
Before I went to the 1x9, took a look at the gear ratios I actually used.
Two were most often used, mid 30s and mid 60s gear in. Rarely used
anything above 80s, live in a very hilly area- used ratios in the 20s often.
So for me the 1x9 set up with 34 t chain ring and 11-34 cassette optimally
fit my needs; gives me a range of 28 to 86 gear in. Now after a few thousand
km with that set up, still use the ratio that is 36 and 63 most often. I'm a FOG,
so once in a while I'd like a lower ratio for going up the hills- down hill I coast.
What is the downside to a 1x9 ? More stress and wear on the chain and RD,
however riding conditions probably are more of a factor. Both are fairly
inexpensive to replace when worn, no FD is a real plus.
Have as many gear ratios as you want or need, nine are the most pragmatic for me.
Last edited by martianone; 04-26-08 at 05:22 AM.