Originally Posted by mihlbach

46x17 is a pretty reasonable gear ratio for a normally sized (not obese) person with healthy joints. I commonly ride up grades much steeper than any NY bridges with 49x16. Gearing down a few gear inches isn't really going to make those hills much easier, but it will further limit your speed and cause you to spin out more frequently, which is the reason you went to 46x17 in the first place. Its more likely your saddle is too low. Before wasting money on a new gear ratio, try raising your saddle incrementally a few mm at a time. Also, use your brake to stop and get into the habit of climbing out of the saddle. This will eleviate pressure on your knees and give you a power boost. Plus, the bridges are fun to attack.