Quote Originally Posted by greenbeanvw View Post
Teamtrinity, I called my LBS and they are going to put an 11-28 on it tonight or tomorrow. THANK YOU.
My post above with ratios was mostly for illustrative purposes to show how your gearing choices can affect speed. HOWEVER...keep this in mind...you may not see a jump up in average speed of 1.8mph. It really depends on your route...and what gear you typically find yourself riding in.

Your 12-27 was probably: 12-13-14-15-16-17-19-21-24-27
Your 11-26 was probably: 11-12-13-14-15-17-19-21-23-26

See how on the smaller end they both have 12-13-14-15-17? If you spent a lot of time in the 11 or 15 on the Trek, that might account for the slower speed on the Specialized because you would have had 12 as your smallest...and you may have been using the 16 instead of the 15.

And your 11-28 will probably be: 11-12-13-14-15-17-19-21-24-28

The first 8 gears will be the same as your Trek...and it'll also have 8 gears in common with your 12-27 currently on the Specialized. Again...you may see a bump up in average speed...but it'll only a a significant bump up in speed if you tend to use the smallest gear alot.

In any case....good luck!!!!