I bought my road bike last September and did not ride it a lot in the winter months (rode a different bike) but have ridden it a fair amount since April. The last few rides have left me wondering if moving the handlebars down a bit would be a good thing. Currently, my handlebars are at about the same level as my seat (judged by eyeballing it, so I could be off). I did a ride today where I was trying to up my pace and I found that I could go faster in the drops. I did not want to derail Will's thread on riding in the drops as my issue is different. I can breathe comfortably in the drops. I think that they could even be lower. How do you know what height to use for your handlebars? How much does fit change when you lose weight and become more fit? I am not that much lighter than I was when I bought the bike, about 10 pounds or 10%. My limiting factor likely is neck arthritis but I have not been having neck problems if I keep up with my core work and exercises my PT gave me.
If I want to experiment, how do I make the change? I have those spacer thingies on the stem.